{"title":"Engine Components - Valve Springs Retainers","description":"\u003cp\u003eShop valve springs retainers wheel and tire accessories at Alliance Racing. Compare diameter, width, offset, bolt pattern, thread size, finish, load rating, vehicle application, and included hardware.\u003c\/p\u003e","products":[{"product_id":"blox-racing-dual-valve-springs-for-k20a2-3-z1-3-2-0l-dohc-i-vtec-k24a-3-2-4l-dohc-i-vtec-bxpt-10301","title":"BLOX Racing Dual Valve Springs for K20A2-3 Z1-3 (2.0L DOHC i-VTEC) \/ K24A-3 (2.4L DOHC i-VTEC) - BXPT-10301","description":"\u003cp\u003eBLOX Racing Dual Valve Springs for K20A2-3 Z1-3 (2.0L DOHC i-VTEC) \/ K24A-3 (2.4L DOHC i-VTEC)\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996354568328,"sku":"bloBXPT-10301","price":168.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/ad46d33c-7b8d-42eb-9537-2b6d1d2cc070-800.jpg?v=1780673449"},{"product_id":"blox-racing-ti-retainers-for-k20a-3-z1-3-2-0l-dohc-i-vtec-k24a-3-2-4l-dohc-i-vtec-bxpt-10402","title":"BLOX Racing Ti Retainers for K20A-3 Z1-3 (2.0L DOHC i-VTEC) \/ K24A-3 (2.4L DOHC i-VTEC) - BXPT-10402","description":"\u003cp\u003eBLOX Racing Ti Retainers for K20A-3 Z1-3 (2.0L DOHC i-VTEC) \/ K24A-3 (2.4L DOHC i-VTEC)\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996357386376,"sku":"bloBXPT-10402","price":165.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/c966416e3ed4ef396d6a79f8cebc0b68L.jpg?v=1780673456"},{"product_id":"blox-racing-valve-springs-for-d-series-sohc-vtec-d16z-y-1-6l-sohc-vtec-bxpt-20301","title":"BLOX Racing Valve Springs for D-series SOHC VTEC D16Z-Y (1.6L SOHC VTEC) - BXPT-20301","description":"\u003cp\u003eBLOX Racing Valve Springs for D-series SOHC VTEC D16Z-Y (1.6L SOHC VTEC)\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996365840520,"sku":"bloBXPT-20301","price":134.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/22a3c44a-f9a0-4f5f-88ee-6751425a2743-800.jpg?v=1780673468"},{"product_id":"blox-racing-ti-retainers-for-b16a-b18c1-5-1-6l-1-8l-dohc-vtec-h22a-2-2l-dohc-vtec-bxpt-10400","title":"BLOX Racing Ti Retainers for B16A - B18C1-5 (1.6L - 1.8L DOHC VTEC) \/ H22A 2.2L DOHC VTEC - BXPT-10400","description":"\u003cp\u003eBLOX Racing Ti Retainers for B16A - B18C1-5 (1.6L - 1.8L DOHC VTEC) \/ H22A 2.2L DOHC VTEC\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996368494728,"sku":"bloBXPT-10400","price":165.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/e77103d4-305a-444a-b6b8-b36962208732-800.jpg?v=1780673471"},{"product_id":"blox-racing-dual-valve-springs-for-h22a-2-2l-dohc-vtec-bxpt-20300","title":"BLOX Racing Dual Valve Springs for H22A (2.2L DOHC VTEC) - BXPT-20300","description":"\u003cp\u003eBLOX Racing Dual Valve Springs for H22A (2.2L DOHC VTEC)\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996379537544,"sku":"bloBXPT-20300","price":168.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/bb010722-7912-42a9-a551-69839f3527b6-800.jpg?v=1780673490"},{"product_id":"blox-racing-ti-retainers-for-d16z-y-1-6l-sohc-vtec-bxpt-10401","title":"BLOX Racing Ti Retainers for D16Z-Y (1.6L SOHC VTEC) - BXPT-10401","description":"\u003cp\u003eBLOX Racing Ti Retainers for D16Z-Y (1.6L SOHC VTEC)\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996382158984,"sku":"bloBXPT-10401","price":165.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/8df4a9eb-bf0a-41bf-b232-eebe9359f266-800.jpg?v=1780673493"},{"product_id":"blox-racing-ti-retainers-for-b18a-b-b20-1-8l-dohc-bxpt-10403","title":"BLOX Racing Ti Retainers for B18A-B B20 (1.8L DOHC) - BXPT-10403","description":"\u003cp\u003eBLOX Racing Ti Retainers for B18A-B B20 (1.8L DOHC)\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996382322824,"sku":"bloBXPT-10403","price":165.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/c35c9a6374d298cb101400cf1d8d5a33.jpg?v=1780673495"},{"product_id":"blox-racing-dual-valve-springs-for-dohc-vtec-bxpt-10300","title":"BLOX Racing Dual Valve Springs for DOHC VTEC - BXPT-10300","description":"\u003cp\u003eBLOX Racing Dual Valve Springs for DOHC VTEC\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996382421128,"sku":"bloBXPT-10300","price":168.74,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/7f3a5b4e-9a98-45dd-a77a-5ba1199b51e9-800.jpg?v=1780673496"},{"product_id":"blox-racing-valve-springs-for-b18a-b-b20-1-8l-2-0l-dohc-bxpt-10302","title":"BLOX Racing Valve Springs for B18A-B \/ B20 (1.8L-2.0L DOHC) - BXPT-10302","description":"\u003cp\u003eBLOX Racing Valve Springs for B18A-B \/ B20 (1.8L-2.0L DOHC)\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996409618568,"sku":"bloBXPT-10302","price":168.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/79558459a2ad0983154834e908a92414.jpg?v=1780673536"},{"product_id":"blox-racing-valve-springs-for-f20c-f22c-2-0l-2-2l-dohc-vtec-bxpt-10303","title":"BLOX Racing Valve Springs for F20C\/F22C (2.0L-2.2L DOHC VTEC) - BXPT-10303","description":"\u003cp\u003eBLOX Racing Valve Springs for F20C\/F22C (2.0L-2.2L DOHC VTEC)\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996445171848,"sku":"bloBXPT-10303","price":168.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/group-00e4ca00-f24a-4cc8-a35c-3f09fb1a6682-800_70f4220d-5551-4606-8d77-e318222868bc.jpg?v=1780673590"},{"product_id":"blox-racing-lost-motion-assemblies-honda-b-h-series-engines-bxpt-11300","title":"BLOX Racing Lost Motion Assemblies Honda B\/H Series Engines - BXPT-11300","description":"\u003cp\u003eBLOX Racing Lost Motion Assemblies Honda B\/H Series Engines\u003c\/p\u003e","brand":"BLOX Racing","offers":[{"title":"Default Title","offer_id":45996458606728,"sku":"bloBXPT-11300","price":81.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/60a43f84-4a86-4f3a-a759-f420c517de35-800.jpg?v=1780673608"},{"product_id":"hks-head-studs-kit-g16e-gts-22999-at001","title":"HKS HEAD STUDS KIT G16E-GTS - 22999-AT001","description":"\u003cp\u003eHKS HEAD STUDS KIT G16E-GTS\u003c\/p\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":45996907757704,"sku":"hks22999-AT001","price":1316.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/7a8daef2bdec03eb7361a2cf4d14b0b5L.jpg?v=1786522633"},{"product_id":"hks-91-00-infiniti-g20-sr20det-outer-valve-spring-set-22001-an002","title":"HKS 91-00 Infiniti G20 SR20DET Outer Valve Spring Set - 22001-AN002","description":"\u003cp\u003eHKS 91-00 Infiniti G20 SR20DET Outer Valve Spring Set\u003c\/p\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":45996987777160,"sku":"hks22001-AN002","price":285.01,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/28513804-9448-4e39-95e1-b70a62c8d114-800.jpg?v=1780674486"},{"product_id":"hks-upgraded-valve-spg-rb26dett-step2-22001-an001","title":"HKS Upgraded Valve SPG RB26DETT step2 - 22001-AN001","description":"\u003cp\u003eHKS Upgraded Valve SPG RB26DETT step2\u003c\/p\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":45997029130376,"sku":"hks22001-AN001","price":393.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/6be4e1fd-6b8b-48aa-bbf8-b5f50776193a-800.jpg?v=1780674550"},{"product_id":"hks-85-91-toyota-corolla-gts-85-89-mr2-valve-spring-set-2201-rt004","title":"HKS 85-91 Toyota Corolla GTS \/ 85-89 MR2 Valve Spring Set - 2201-RT004","description":"\u003cp\u003eHKS 85-91 Toyota Corolla GTS \/ 85-89 MR2 Valve Spring Set\u003c\/p\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":45997165117576,"sku":"hks2201-RT004","price":163.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/f09081058a36d21f52faacdc78ef8dd6.jpg?v=1780674773"},{"product_id":"hks-nissan-rb26dett-pro-head-stud-kit-22999-an008","title":"HKS Nissan RB26DETT Pro Head Stud Kit - 22999-AN008","description":"\u003cp\u003eHKS Nissan RB26DETT Pro Head Stud Kit\u003c\/p\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":45997292322952,"sku":"hks22999-AN008","price":1936.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/ee99902452e48aa30ce4f61b0ab309aaL.png?v=1786522709"},{"product_id":"skunk2-alpha-series-honda-acura-k-vtec-titanium-retainer-set-308-05-1410","title":"Skunk2 Alpha Series Honda\/Acura K VTEC Titanium Retainer Set - 308-05-1410","description":"\u003cp\u003eSkunk2's industry-leading Alpha Titanium Retainers are designed to significantly reduce valvetrain mass, resulting in more horsepower and improved valvetrain stability. Similar to Skunk2's already popular Pro Series Titanium Retainers, Alpha Titanium Retainers feature radius-cut edges for additional rocker arm clearance and reduced weight, strategically positioned lightening grooves, and reduced overall heights for better valve seal clearance and even further weight reduction. Alpha Titanium Retainers are manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to ensure that each is optimized for strength as well as for reduced weight. Skunk2 engineers then test and prove their designs on the engine dyno as well as the race track. Once approved for manufacturing, only medical-grade titanium that's been ultrasonically inspected and certified is used. Following CNC machining, each retainer is then individually inspected to ensure proper hole diameter, taper, and that each are free from machining defects to ensure proper installed valve spring heights and pressures. Finally, each retainer is serialized for your protection, including valuable information, like material batch specifics as well as production and inspection dates. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\u003cli\u003eFor B \/ H VTEC\u003c\/li\u003e\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152794505352,"sku":"skk308-05-1410","price":196.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/ace8d1f0071883f88b28291fe42a228d.jpg?v=1782961382"},{"product_id":"skunk2-pro-series-honda-acura-k20-k24-f20c-f22c-titanium-retainers-308-05-0410","title":"Skunk2 Pro Series Honda\/Acura K20\/K24\/F20C\/F22C Titanium Retainers - 308-05-0410","description":"\u003cp\u003eSkunk2's industry-leading Titanium Retainers for Honda's K-series engines are designed to significantly reduce valvetrain mass, resulting in more horsepower and improved valvetrain stability. Unlink other retainers, Skunk2 Titanium Retainers feature radius-cut edges for additional rocker arm clearance and reduced weight, strategically positioned lightening grooves, and reduced overall heights for better valve seal clearance and even further weight reduction. All Skunk2 Titanium Retainers are manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to ensure that each is optimized for strength as well as for reduced weight. Skunk2 engineers then test and prove their designs on the engine dyno as well as the race track. Once approved for manufacturing, only medical-grade titanium that's been ultrasonically inspected and certified is used. Following CNC machining, each retainer is then individually inspected to ensure proper hole diameter, taper, and that each are free from machining defects to ensure proper installed valve spring heights and pressures. Finally, each Titanium Retainer is serialized for your protection, including valuable information, like material batch specifics as well as production and inspection dates. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTitanium Constructed; 42% Lighter Than OEM Steel Retainers\u003c\/li\u003e\n\u003cli\u003ePair w\/Tuner Series Or Pro Series Valve Springs\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152797520008,"sku":"skk308-05-0410","price":219.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/b14c3674d98d43e3c99253bab554b2c5_9075f04b-0ea9-484b-85ee-41c332642698.jpg?v=1782961442"},{"product_id":"skunk2-pro-series-honda-acura-b16a-b17-b18c-h22a-f20b-titanium-retainers-308-05-0300","title":"Skunk2 Pro Series Honda\/Acura B16A\/B17\/B18C\/H22A\/F20B Titanium Retainers - 308-05-0300","description":"\u003cp\u003eSkunk2's industry-leading Titanium Retainers for Honda's B-series and H-series VTEC engines are designed to significantly reduce valvetrain mass, resulting in more horsepower and improved valvetrain stability. Unlink other retainers, Skunk2 Titanium Retainers feature radius-cut edges for additional rocker arm clearance and reduced weight, strategically positioned lightening grooves, and reduced overall heights for better valve seal clearance and even further weight reduction. All Skunk2 Titanium Retainers are manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to ensure that each is optimized for strength as well as for reduced weight. Skunk2 engineers then test and prove their designs on the engine dyno as well as the race track. Once approved for manufacturing, only medical-grade titanium that's been ultrasonically inspected and certified is used. Following CNC machining, each retainer is then individually inspected to ensure proper hole diameter, taper, and that each are free from machining defects to ensure proper installed valve spring heights and pressures. Finally, each Titanium Retainer is serialized for your protection, including valuable information, like material batch specifics as well as production and inspection dates. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTitanium Constructed; 42% Lighter Than OEM Steel Retainers\u003c\/li\u003e\n\u003cli\u003ePair w\/Tuner Series Or Pro Series Valve Springs\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152797585544,"sku":"skk308-05-0300","price":219.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/b14c3674d98d43e3c99253bab554b2c5.jpg?v=1782961442"},{"product_id":"skunk2-honda-acura-k20-k24-f20c-f22c-valve-spring-base-kit-312-05-0010","title":"Skunk2 Honda\/Acura (K20\/K24\/F20C\/F22C) Valve Spring Base Kit - 312-05-0010","description":"\u003cp\u003eSkunk2's high-quality Spring Bases for Honda's K-series engines are designed to allow any K-series cylinder head originally equipped with single valve springs to accept higher-performance, dual valve springs, like those from Skunk2. Each Spring Base is manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to make sure the design is optimized for strength and longevity. Engineers then test and prove the design on the engine dyno. Once approved for manufacturing, engineers make sure to only use high-quality steel that's been ultrasonically inspected and certified. After CNC machining, each Spring Base is then individually inspected to ensure proper dimensions and that it's free from machining defects. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.440 in. Inner Diameter\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152798240904,"sku":"skk312-05-0010","price":43.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/33b9b7ab04d3443fc30749d995653303.jpg?v=1782961457"},{"product_id":"skunk2-tuner-series-honda-acura-b16a-b17a-b18c-dohc-vtec-alpha-valve-spring-set-dual-springs-311-05-1350","title":"Skunk2 Tuner Series Honda\/Acura (B16A\/ B17A\/ B18C) DOHC VTEC Alpha Valve Spring Set (Dual Springs) - 311-05-1350","description":"\u003cp\u003eAlpha Series Valve Spring Set; Seat Pressure 68 Lbs At 1.320 in.; Open Pressure 210 Lbs At 0.820 in.; Coil Bind 0.800 in.; Set of 16;\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrevents Valve Float\/Maintain Valvetrain Stability +10000rpm\u003c\/li\u003e\n\u003cli\u003eManufactured From Super-Clean Chrome-Silicone Wire\u003c\/li\u003e\n\u003cli\u003eOpen Pressure 210 lbs. At 0.820 in.\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 68 lbs. At 1.320 in.\u003c\/li\u003e\n\u003cli\u003eCoil Bind 0.800 in.\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152798273672,"sku":"skk311-05-1350","price":221.92,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/4fed7bc9ca8d78fa95eb2d7080d98776.jpg?v=1782961457"},{"product_id":"skunk2-honda-acura-h22a-f20b-valve-spring-base-kit-312-05-0015","title":"Skunk2 Honda\/Acura (H22A\/F20B) Valve Spring Base Kit - 312-05-0015","description":"\u003cp\u003eSkunk2's high-quality Spring Bases for Honda's H-series VTEC engines are designed to allow any H-series VTEC cylinder head to accept Skunk2's higher-performance, Pro Series Valve Springs and Titanium Retainers originally designed for B-series engines. Each Spring Base is manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to make sure the design is optimized for strength and longevity. Engineers then test and prove the design on the engine dyno. Once approved for manufacturing, engineers make sure to only use high-quality steel that's been ultrasonically inspected and certified. After CNC machining, each Spring Base is then individually inspected to ensure proper dimensions and that it's free from machining defects. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.480 in. Inner Diameter\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152798306440,"sku":"skk312-05-0015","price":43.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/33b9b7ab04d3443fc30749d995653303_67838c39-350a-4b96-b664-c0cd3914f2c7.jpg?v=1782961460"},{"product_id":"skunk2-alpha-series-honda-acura-b-series-valve-spring-and-titanium-retainer-kit-344-05-1300","title":"Skunk2 Alpha Series Honda\/Acura B Series Valve Spring and Titanium Retainer Kit - 344-05-1300","description":"\u003cp\u003eSkunk2 is proud to introduce its Alpha Valve Spring and Titanium Retainer Kit for Honda's B-series VTEC engines. Each kit includes Skunk2's high-quality dual valve springs and race-proven titanium retainers that are the result of nearly two decades of racing and engine building experience. Each Alpha Valve Spring is manufactured exclusively from super-clean, chrome-silicone wire milled in Japan. By using inner and outer springs mated together through a slight interference fit and with differing frequencies, Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm. Skunk2's industry-leading Alpha Titanium Retainers are designed to significantly reduce valvetrain mass, resulting in more horsepower and improved valvetrain stability. Similar to Skunk2's already popular Pro Series Titanium Retainers, Alpha Titanium Retainers feature radius-cut edges for additional rocker arm clearance and reduced weight, strategically positioned lightening grooves, and reduced overall heights for better valve seal clearance and even further weight reduction. Alpha Titanium Retainers are manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to ensure that each is optimized for strength as well as for reduced weight. Skunk2 engineers then test and prove their designs on the engine dyno as well as the race track. Once approved for manufacturing, only medical-grade titanium that's been ultrasonically inspected and certified is used. Following CNC machining, each retainer is then individually inspected to ensure proper hole diameter, taper, and that each are free from machining defects to ensure proper installed valve spring heights and pressures.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOpen Pressure 210 lbs. At 0.820 in.\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 68 lbs. At 1.320 in.\u003c\/li\u003e\n\u003cli\u003eCoil Bind 0.800 in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152798371976,"sku":"skk344-05-1300","price":392.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/94d005923e1a7472c69b456e6e9de0d9.jpg?v=1782961460"},{"product_id":"skunk2-alpha-series-honda-acura-k-series-valve-spring-and-titanium-retainer-kit-344-05-1410","title":"Skunk2 Alpha Series Honda\/Acura K Series Valve Spring and Titanium Retainer Kit - 344-05-1410","description":"\u003cp\u003eSkunk2 is proud to introduce its Alpha Valve Spring and Titanium Retainer Kit for Honda's K-series engines. Each kit includes Skunk2's high-quality dual valve springs and race-proven titanium retainers that are the result of nearly two decades of racing and engine building experience. Each Alpha Valve Spring is manufactured exclusively from super-clean, chrome-silicone wire milled in Japan. By using inner and outer springs mated together through a slight interference fit and with differing frequencies, Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm. Skunk2's industry-leading Alpha Titanium Retainers are designed to significantly reduce valvetrain mass, resulting in more horsepower and improved valvetrain stability. Similar to Skunk2's already popular Pro Series Titanium Retainers, Alpha Titanium Retainers feature radius-cut edges for additional rocker arm clearance and reduced weight, strategically positioned lightening grooves, and reduced overall heights for better valve seal clearance and even further weight reduction. Alpha Titanium Retainers are manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to ensure that each is optimized for strength as well as for reduced weight. Skunk2 engineers then test and prove their designs on the engine dyno as well as the race track. Once approved for manufacturing, only medical-grade titanium that's been ultrasonically inspected and certified is used. Following CNC machining, each retainer is then individually inspected to ensure proper hole diameter, taper, and that each are free from machining defects to ensure proper installed valve spring heights and pressures.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOpen Pressure 220 lbs. At 1.100 in.\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 60 lbs. at 1.600 in.\u003c\/li\u003e\n\u003cli\u003eCoil Bind 1.000 in.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152798404744,"sku":"skk344-05-1410","price":392.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/94d005923e1a7472c69b456e6e9de0d9_f274a442-8fc6-44fd-a473-0c3061c1e3d3.jpg?v=1782961460"},{"product_id":"skunk2-honda-acura-b-d-f-k-series-viton-valve-stem-seal-kit-312-05-0100","title":"Skunk2 Honda\/Acura (B\/D\/F\/K Series) Viton Valve Stem Seal Kit - 312-05-0100","description":"\u003cp\u003eSkunk2's Viton Valve Stem Seals for popular Honda engines are designed to provide exceptional lubrication while keeping oil out of the combustion chamber. Only Viton is able to provide precise oil control and maximum durability, even at high rpm. Unlike OEM Honda valve stem seals that use different materials for both intake and exhaust seals, all Skunk2 seals exceed OEM specifications and are manufactured from high-quality Viton. Each seal also features stiffer retaining springs for a precise fit. The results are a seal that's resistant to extreme heat, oil additives, and abrasion. High-quality valve stem seals are vital to an engine's performance and longevity. Skunk2's Viton Valve Stem Seals ensure that each valve stem remains properly lubricated without allowing oil into the combustion chamber.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStiffer Retaining Springs For A Precise Fit\u003c\/li\u003e\n\u003cli\u003eFor Honda Engines Using A 5.5mm Valve Stem\u003c\/li\u003e\n\u003cli\u003eManufactured From High-Quality Viton\u003c\/li\u003e\n\u003cli\u003eKeeps Oil Out Of Combustion Chamber\u003c\/li\u003e\n\u003cli\u003eProvides Exceptional Lubrication\u003c\/li\u003e\n\u003cli\u003eExceeds OEM Specifications\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152853979272,"sku":"skk312-05-0100","price":31.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/9345b7018a0255d49a4804834363abcb.jpg?v=1782961579"},{"product_id":"skunk2-tuner-series-honda-acura-h22a-f20b-dohc-vtec-alpha-valve-spring-set-dual-springs-311-05-1360","title":"Skunk2 Tuner Series Honda\/Acura (H22A\/F20B) DOHC VTEC Alpha Valve Spring Set (Dual Springs) - 311-05-1360","description":"\u003cp\u003eManufactured exclusively from super-clean, chrome-silicone wire milled in Japan, Skunk2's Alpha Valve Springs for Honda's D-series VTEC engines are a product of the company's years of racing and engine building experiences. Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrevents Valve Float\/Maintain Valvetrain Stability +10000rpm\u003c\/li\u003e\n\u003cli\u003eManufactured From Super-Clean Chrome-Silicone Wire\u003c\/li\u003e\n\u003cli\u003eOpen Pressure 205 lbs. at 0.900 in.\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 50 lbs. at 1.400 in.\u003c\/li\u003e\n\u003cli\u003eCoil Bind 0.880 in.\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152861941896,"sku":"skk311-05-1360","price":211.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/128f2dede4d00c9774ef0bb81794fffb.jpg?v=1782961590"},{"product_id":"skunk2-pro-series-honda-acura-b-series-vtec-xp-valve-spring-set-dual-springs-311-05-7350","title":"Skunk2 Pro Series Honda\/Acura B-Series VTEC XP Valve Spring Set (Dual Springs) - 311-05-7350","description":"\u003cp\u003eSkunk2 is proud to introduce its Pro Series XP (Extra Pressure) Racing Valve Spring Kits for the Honda B-series VTEC engines. Each kit includes Skunk2's high-quality race-proven dual valve springs that are the result of nearly two decades of racing and engine building experience. 'XP' features a higher seat pressure for turbocharged and extreme high RPM motors. This spring has a seat pressure of 93lbs @ 1.320 in. while keeping the coil bind height for higher lift camshafts. Each Pro Series XP Racing Valve Spring is manufactured exclusively from super-clean, chrome-silicone wire milled in Japan. By using inner and outer springs mated together through a slight interference fit and with differing frequencies, Pro Series XP Racing Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 11,000 rpm. Wound by a premier North American winder, our Pro Series XP Racing Valve Springs retains its durability and strength that results in improvement to the extreme fatigue limit of the wire and enhanced resistance to load loss. Pro Series XP Racing Valve Springs are engineered to handle the demands of extreme-lift camshafts operating at prolonged, high-rpm use at championship-level racing. Skunk2's Pro Series XP Racing Valve Spring's for the Honda's B-series VTEC engines are simply the best on the market. Pro Series XP Racing Valve Springs have been tested at speeds exceeding 11,000 rpm on our engine dyno, street, and the race track. Our superior, Japanese-milled, super-clean chrome silicone wire is 100-percent eddy-current inspected prior to coiling. Next, they are heat-treated, shot-peened, and chemically polished for strength and durability. A special nitriding process concludes Skunk2's rigorous manufacturing process. The end result is a lightweight valve spring that safely accommodates high-lift camshafts and features superior resistance to load loss, even under extreme operating conditions.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrevents Valve Float\/Maintain Valvetrain Stability +10000rpm\u003c\/li\u003e\n\u003cli\u003eManufactured From Super-Clean Chrome-Silicone Wire\u003c\/li\u003e\n\u003cli\u003eOpen Pressure 238 lbs. At 0.820 in.\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 93 lbs. At 1.320 in.\u003c\/li\u003e\n\u003cli\u003eCoil Bind 0.718 in.\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152862138504,"sku":"skk311-05-7350","price":369.21,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/19750adee5e9f85c0f714c65201c4dcb.jpg?v=1782961593"},{"product_id":"skunk2-honda-acura-vtec-b-series-spring-type-lost-motion-assembly-kit-312-05-0200","title":"Skunk2 Honda\/Acura VTEC B Series Spring Type Lost Motion Assembly Kit - 312-05-0200","description":"\u003cp\u003eSkunk2 is proud to introduce its Lost Motion Assembly Kits for Honda's B-series VTEC engines. Skunk2 Lost Motion Assemblies will fit any B-Series DOHC VTEC engine (Type-R\/GSR B16A, B17A, B18C). The Skunk2 Lost Motion Assembly is an advance spring device that is designed to put pre-load on the center portion of the VTEC rocker when it is in the unlocked position (when VTEC mode is disabled). During extended operating conditions, the contaminants in the oil will more than likely cause the piston to seize resulting in the VTEC rocker rattling when VTEC is not engaging or when the vehicle is in idle. Each Skunk2 Lost Motion Assembly is manufactured exclusively from chrome silicone steel using the latest 3D CAD (Computer Aided Design) modeling and FEA (Finite Element Analysis) to ensure maximum optimization. Each chrome silicone steel spring features a hardened tip for added durability. Skunk2 engineers then tested and proved their design on the engine dyno as well as the race track. The Skunk2 Lost Motion Assembly Kit replaces the factory piston-style LMA design with an improved design commonly found in newer generation Honda engines. Replacing LMAs are recommended when installing aftermarket camshafts and required when installing Skunk2 Pro Series and other high-lift camshafts. Each Lost Motion Assembly Kit includes a set of 8 assemblies for an entire Honda DOHC VTEC B-Series 4-cylinder engine (Type-R\/GSR, B16A, B17A, B18C) and are compatible with all camshafts. When using camshafts with +12.5mm lift, LMAs are an absolute must, and Skunk2 Lost Motion Assembly springs are 3 percent stiffer than ITR springs.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReplaces Factory Piston-Style LMA Design\u003c\/li\u003e\n\u003cli\u003eManufactured From Chrome Silicone Steel\u003c\/li\u003e\n\u003cli\u003eFor Use w\/Camshaft Lift Above 0.490 in.\u003c\/li\u003e\n\u003cli\u003eSet Of 8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152862204040,"sku":"skk312-05-0200","price":99.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/c31a5defc254b0e73b91e98f80cea68e.jpg?v=1782961593"},{"product_id":"skunk2-tuner-series-honda-acura-k20-k24-f20c-f22c-dohc-vtec-alpha-valve-spring-set-dual-springs-311-05-1380","title":"Skunk2 Tuner Series Honda\/Acura (K20\/K24\/F20C\/F22C) DOHC VTEC Alpha Valve Spring Set (Dual Springs) - 311-05-1380","description":"\u003cp\u003eManufactured exclusively from super-clean, chrome-silicone wire milled in Japan, Skunk2's Alpha Valve Springs for Honda\/Acura K-series VTEC engines are a product of the company's years of racing and engine building experiences. By using inner and outer springs mated together through a slight interference fit and with differing frequencies, Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrevents Valve Float\/Maintain Valvetrain Stability +10000rpm\u003c\/li\u003e\n\u003cli\u003eManufactured From Super-Clean Chrome-Silicone Wire\u003c\/li\u003e\n\u003cli\u003eOpen Pressure 220 lbs. At 1.100 in.\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 60 lbs. at 1.600 in.\u003c\/li\u003e\n\u003cli\u003eCoil Bind 1.000 in.\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152862236808,"sku":"skk311-05-1380","price":221.92,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/128f2dede4d00c9774ef0bb81794fffb_5b815898-0cbd-4c2b-a765-3afd04a79b77.jpg?v=1782961593"},{"product_id":"skunk2-pro-series-honda-acura-k-series-i-vtec-xp-valve-spring-set-dual-springs-311-05-7380","title":"Skunk2 Pro Series Honda\/Acura K-Series i-VTEC XP Valve Spring Set (Dual Springs) - 311-05-7380","description":"\u003cp\u003eSkunk2 is proud to introduce its Pro Series XP (Extra Pressure) Racing Valve Spring Kits for the Honda K-series i-VTEC engines. Each kit includes Skunk2's high-quality race-proven dual valve springs that are the result of nearly two decades of racing and engine building experience. 'XP' features a higher seat pressure for turbocharged and extreme high RPM motors. This spring has a seat pressure of 100lbs @ 1.600 in. while keeping the coil bind height for higher lift camshafts. Each Pro Series XP Racing Valve Spring is manufactured exclusively from super-clean, chrome-silicone wire milled in Japan. By using inner and outer springs mated together through a slight interference fit and with differing frequencies, Pro Series XP Racing Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 11,000 rpm. Wound by a premier North American winder, our Pro Series XP Racing Valve Springs retains its durability and strength that results in improvement to the extreme fatigue limit of the wire and enhanced resistance to load loss. Pro Series XP Racing Valve Springs are engineered to handle the demands of extreme-lift camshafts operating at prolonged, high-rpm use at championship-level racing. Skunk2's Pro Series XP Racing Valve Spring's for the Honda's K-series i-VTEC engines are simply the best on the market. Pro Series XP Racing Valve Springs have been tested at speeds exceeding 11,000 rpm on our engine dyno, street, and the race track. Our superior, Japanese-milled, super-clean chrome silicone wire is 100-percent eddy-current inspected prior to coiling. Next, they are heat-treated, shot-peened, and chemically polished for strength and durability. A special nitriding process concludes Skunk2's rigorous manufacturing process.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrevents Valve Float\/Maintain Valvetrain Stability +10000rpm\u003c\/li\u003e\n\u003cli\u003eManufactured From Super-Clean Chrome-Silicone Wire\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 100 lbs. At 1.600 in.\u003c\/li\u003e\n\u003cli\u003eOpen Pressure 255 lbs. At 1.100 in.\u003c\/li\u003e\n\u003cli\u003eCoil Bind 0.890 in.\u003c\/li\u003e\n\u003cli\u003eMax Lift 0.680 in.\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152862302344,"sku":"skk311-05-7380","price":369.21,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/19750adee5e9f85c0f714c65201c4dcb_68e119af-fd64-4c2d-ae12-2ddb58be84d5.jpg?v=1782961595"},{"product_id":"skunk2-alpha-series-honda-d-series-vtec-valve-spring-set-311-05-1345","title":"Skunk2 Alpha Series Honda D Series VTEC Valve Spring Set - 311-05-1345","description":"\u003cp\u003eManufactured exclusively from super-clean, chrome-silicone wire milled in Japan, Skunk2's Alpha Valve Springs for Honda's D-series VTEC engines are a product of the company's years of racing and engine building experiences. Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrevents Valve Float\/Maintain Valvetrain Stability +10000rpm\u003c\/li\u003e\n\u003cli\u003eManufactured From Super-Clean Chrome-Silicone Wire\u003c\/li\u003e\n\u003cli\u003eOpen Pressure 158 lbs.\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 62 lbs.\u003c\/li\u003e\n\u003cli\u003eSet of 16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152872493192,"sku":"skk311-05-1345","price":160.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/c21ab318e628e7c930b77df539af7004.jpg?v=1782961646"},{"product_id":"skunk2-honda-acura-b-series-alpha-titanium-retainer-kit-308-05-1300","title":"Skunk2 Honda \/ Acura B Series Alpha Titanium Retainer Kit - 308-05-1300","description":"\u003cp\u003eSkunk2's industry-leading Alpha Titanium Retainers are designed to significantly reduce valvetrain mass, resulting in more horsepower and improved valvetrain stability. Similar to Skunk2's already popular Pro Series Titanium Retainers, Alpha Titanium Retainers feature radius-cut edges for additional rocker arm clearance and reduced weight, strategically positioned lightening grooves, and reduced overall heights for better valve seal clearance and even further weight reduction. Alpha Titanium Retainers are manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to ensure that each is optimized for strength as well as for reduced weight. Skunk2 engineers then test and prove their designs on the engine dyno as well as the race track. Once approved for manufacturing, only medical-grade titanium that's been ultrasonically inspected and certified is used. Following CNC machining, each retainer is then individually inspected to ensure proper hole diameter, taper, and that each are free from machining defects to ensure proper installed valve spring heights and pressures. Finally, each retainer is serialized for your protection, including valuable information, like material batch specifics as well as production and inspection dates. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eExceptional Performance\/Reliability\/Quality\u003c\/li\u003e\n\u003cli\u003eManufactured W\/ 3D Cad And Fea\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152872886408,"sku":"skk308-05-1300","price":196.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/778a9f46cb48a342f5e6b733d39bcb16_92e30445-a9e6-41df-9724-579ec5a2e7d3.jpg?v=1782961655"},{"product_id":"skunk2-alpha-series-honda-acura-h-series-valve-spring-and-titanium-retainer-kit-344-05-1360","title":"Skunk2 Alpha Series Honda\/Acura H Series Valve Spring and Titanium Retainer Kit - 344-05-1360","description":"\u003cp\u003eAlpha Series Valve Spring And Retainer Kit; Seat Pressure 50 Lbs At 1.400 in.; Open Pressure 205 Lbs At 0.900 in.; Coil Bind 0.880 in.; Incl. Dual Valve Springs\/Titanium Retainers;\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOpen Pressure 205 lbs. at 0.900 in.\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 50 lbs. at 1.400 in.\u003c\/li\u003e\n\u003cli\u003eCoil Bind 0.880 in.\u003c\/li\u003e\n\u003cli\u003eFor H Series\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152873640072,"sku":"skk344-05-1360","price":392.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/d883ed1d51f3cf651c94352774acee5d.jpg?v=1782961674"},{"product_id":"skunk2-honda-acura-b-d-f-k-series-valve-keepers-locks-7-degree-for-oem-or-aftermarket-valves-312-05-0150","title":"Skunk2 Honda\/Acura (B\/D\/F\/K Series) Valve Keepers\/Locks 7 Degree For OEM or Aftermarket Valves - 312-05-0150","description":"\u003cp\u003eSkunk2 Valve Keepers \/ Locks for Honda\/Acura B\/D\/F\/H VTEC and K Series VTEC Engines. Manufactured from bar stock and CNC machined for precision fit and finish. The Skunk2 Keeper \/ Locks are then heat-treated for ultimate strength and completed with Black Oxide for corrosive resistance and a great appearance. One set includes 32 pieces (enough for 16 valves) that fit factory and aftermarket 5.5mm valves. These keepers are 7 degree and work with most all retainers both OEM and aftermarket.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e7 Degree Keeper Seat\u003c\/li\u003e\n\u003cli\u003e5.5mm Valve\u003c\/li\u003e\n\u003cli\u003eSet Of 32\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152874688648,"sku":"skk312-05-0150","price":68.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/4ae2a6493bd88ff2a191414a84b35bfd.jpg?v=1782961696"},{"product_id":"skunk2-alpha-series-honda-acura-d-series-valve-spring-and-titanium-retainer-kit-344-05-1350","title":"Skunk2 Alpha Series Honda\/Acura D Series Valve Spring and Titanium Retainer Kit - 344-05-1350","description":"\u003cp\u003eSkunk2 is proud to introduce its Alpha Valve Spring and Titanium Retainer Kit for Honda's D-series VTEC engines. Each kit includes Skunk2's high-quality valve springs and race-proven titanium retainers that are the result of nearly two decades of racing and engine building experience. Manufactured exclusively from super-clean, chrome-silicone wire milled in Japan, Skunk2's Alpha Valve Springs for Honda's D-series VTEC engines are a product of the company's years of racing and engine building experiences. Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm. Skunk2's industry-leading Alpha Titanium Retainers are designed to significantly reduce valvetrain mass, resulting in more horsepower and improved valvetrain stability. Similar to Skunk2's already popular Pro Series Titanium Retainers, Alpha Titanium Retainers feature radius-cut edges for additional rocker arm clearance and reduced weight, strategically positioned lightening grooves, and reduced overall heights for better valve seal clearance and even further weight reduction. Alpha Titanium Retainers are manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to ensure that each is optimized for strength as well as for reduced weight. Skunk2 engineers then test and prove their designs on the engine dyno as well as the race track. Once approved for manufacturing, only medical-grade titanium that's been ultrasonically inspected and certified is used. Following CNC machining, each retainer is then individually inspected to ensure proper hole diameter, taper, and that each are free from machining defects to ensure proper installed valve spring heights and pressures.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOpen Pressure 168 lbs.\u003c\/li\u003e\n\u003cli\u003eSeat Pressure 62 lbs.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152874721416,"sku":"skk344-05-1350","price":323.69,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/7e6b32b91af0c04539a0a45add0871dd.jpg?v=1782961696"},{"product_id":"skunk2-honda-l15b7-ultra-valve-springs-and-spring-base-kit-313-05-9400","title":"Skunk2 Honda L15B7 Ultra Valve Springs and Spring Base Kit - 313-05-9400","description":"\u003cp\u003eSkunk2 Honda L15B7 Ultra Valve Springs and Spring Base Kit\u003c\/p\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152876949640,"sku":"skk313-05-9400","price":317.96,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/d8e12f429daca4cd93d79f492946e64a.jpg?v=1782961745"},{"product_id":"skunk2-toyota-supra-mk5-bmw-b58-s58-high-lift-valve-spring-titanium-retainer-set-313-14-1000","title":"Skunk2 Toyota Supra MK5 \/ BMW B58\/S58 High Lift Valve Spring \u0026 Titanium Retainer Set - 313-14-1000","description":"\u003cp\u003eSkunk2 Toyota Supra MK5 \/ BMW B58\/S58 High Lift Valve Spring \u0026amp; Titanium Retainer Set\u003c\/p\u003e","brand":"Skunk2 Racing","offers":[{"title":"Default Title","offer_id":46152877113480,"sku":"skk313-14-1000","price":908.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/d8e4ecefe0fb50ff326c2f590bc807a1.jpg?v=1782961749"},{"product_id":"apr-audi-bentley-lamborghini-porsche-volkswagen-valve-spring-kit-single-ms100258","title":"APR Audi\/Bentley\/Lamborghini\/Porsche\/Volkswagen Valve Spring Kit - Single - MS100258","description":"\u003cp\u003eThe APR Valve Spring System is a high performance, lightweight upgrade designed to increase valve control and eradicate valve float common on many applications. APR's design specifications called for a valve spring, retainer and spring seat combination that doesn't overpower and snap the OEM valves or erode the aluminum spring seat, while still maintaining exceptional valve control. The result is an advanced design that's 28% lighter yet 20% stiffer than the high performance OEM EA113.K04 (MK6 R) setup and is proven to eliminate the OEM valve train's weakest link. We call it Performance Without Compromise!\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4140 heat-treated chrome molly steel spring seats with black oxide coating\u003c\/li\u003e\n\u003cli\u003eSpring seats included to protects against aluminum erosion in the head\u003c\/li\u003e\n\u003cli\u003e71% weight reduction over 2.0T EA113.K04 retainers (MK6 R)\u003c\/li\u003e\n\u003cli\u003e20% stiffness increase over 2.0T EA113.K04 Springs (MK6 R)\u003c\/li\u003e\n\u003cli\u003e19% weight reduction over 2.0T EA113.K04 springs (MK6 R)\u003c\/li\u003e\n\u003cli\u003eEradicates valve float issues (MK6 EA888.1)\u003c\/li\u003e\n\u003cli\u003eASTM A877A OTSC round wire steel springs\u003c\/li\u003e\n\u003cli\u003eSupports higher revving application\u003c\/li\u003e\n\u003cli\u003eWeight saving beehive spring design\u003c\/li\u003e\n\u003cli\u003e6AL4V American titanium retainers\u003c\/li\u003e\n\u003cli\u003eIncrease valvetrain control\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM valves\u003c\/li\u003e\n\u003cli\u003e2 grams per retainer\u003c\/li\u003e\n\u003cli\u003e29 grams per spring\u003c\/li\u003e\n\u003cli\u003ePlug and Play\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDownloads \u0026amp; Resources\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/youtu.be\/1s9O7mk-HCA\" target=\"_blank\" rel=\"noopener\"\u003eVideo File (WEBM)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/44c243d4911633bf48a531094735fb86.PDF\" target=\"_blank\" rel=\"noopener\"\u003eInstallation Instructions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"APR","offers":[{"title":"Default Title","offer_id":46221033701512,"sku":"aprMS100258","price":58.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/fcbb858e0753beb12d15b42eb28229b3L.jpg?v=1784648097"},{"product_id":"apr-gen-5-haldex-upgraded-pressure-relief-valve-spring-stage-2-ms100267","title":"APR Gen 5 Haldex Upgraded Pressure Relief Valve Spring - Stage 2 - MS100267","description":"\u003cp\u003eThe APR Stage 2 Spring Upgrade for Haldex is the hardware component that unlocks the full potential of APR’s AWD controller calibration for Gen 5 Haldex. Engineered as a direct replacement for the factory clutch pressure relief spring, this precision-calibrated upgrade enables significantly higher achievable clamping pressures under increased torque demand while maintaining OEM-level drivability and system integrity. When paired with APR Stage 2 software for Haldex, the upgraded spring supports dramatically increased clutch pressure during high-load conditions, improving torque transfer to the rear axle and delivering faster, more consistent AWD engagement during aggressive launches and performance driving. The result is improved traction, stronger launches, and enhanced confidence when putting power to the pavement. Unlike spring-only solutions that require disassembling and modifying the factory valve assembly, the APR Stage 2 hardware is engineered as a simple, direct replacement component minimizing installation complexity while preserving factory safeguards and control architecture. Designed to work seamlessly within the OEM Haldex control strategy, the APR Stage 2 Spring Upgrade completes a fully integrated drivetrain performance solution allowing increased torque capability without compromising daily drivability or long-term reliability.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eOur instrumented Haldex unit achieved 22+ Bar clutch pressure increase over Stage 1 \u0026amp; nearly 30 Bar over stock\u003c\/li\u003e\n\u003cli\u003eAPR Stage 2 Spring Upgrade for Haldex is supplied as a fully assembled, direct replacement part.\u003c\/li\u003e\n\u003cli\u003eIncreased pressure means an increase in torque capacity transferrable through the Haldex unit\u003c\/li\u003e\n\u003cli\u003eAPR recommends the proper APR Service Kit for Haldex when installing spring upgrade\u003c\/li\u003e\n\u003cli\u003eStage 2 requires only a simple spring change \u0026amp; software flash!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDownloads \u0026amp; Resources\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/33c61ba4393943d14afc16b1ea8b9152.PDF\" target=\"_blank\" rel=\"noopener\"\u003eInstallation Instructions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/youtu.be\/6v4vqF0uQvY?si=7o6BflELEbrEN3uh\" target=\"_blank\" rel=\"noopener\"\u003eVideo File (WEBM)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"APR","offers":[{"title":"Default Title","offer_id":46221044187272,"sku":"aprMS100267","price":137.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/acd57c5804a735ab4c3b41167d2dbc29L.jpg?v=1784648170"},{"product_id":"manley-gm-ls-series-super-finished-h-p-valve-springs-650-max-lift-16-pieces-221438-16","title":"Manley GM LS Series Super Finished H.P. Valve Springs .650 Max Lift (16 Pieces) - 221438-16","description":"\u003cp\u003eFrom drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.\u003c\/p\u003e\n\u003cp\u003eManley Valve Spring, SPRING-1.311 SINGLE.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTightly controlled open-end flatness reduces valve stem side loading\u003c\/li\u003e\n\u003cli\u003eManufactured from “super clean” Hi-Tensile Chrome Silicon steel\u003c\/li\u003e\n\u003cli\u003eProprietary multi-step heat treating minimizes load loss\u003c\/li\u003e\n\u003cli\u003eTip thickness designed to eliminate overload breakage\u003c\/li\u003e\n\u003cli\u003eShot-peened to MIL spec for max fatigue life\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460562440328,"sku":"man221438-16","price":365.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/d09438528cbcbc731fb31e50769712b9L.jpg?v=1787943804"},{"product_id":"manley-nextek-series-1-580-od-832-id-730-lift-oval-track-and-endurance-valve-springs-221443-16","title":"Manley NexTek Series 1.580 OD .832 ID .730 Lift Oval Track and Endurance Valve Springs - 221443-16","description":"\u003cp\u003eFrom drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.\u003c\/p\u003e\n\u003cp\u003eManley Valve Spring, SPRING-1.580 DOUBLE.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSpecially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities\u003c\/li\u003e\n\u003cli\u003eTested by leading engine builders and are confirmed to be the best performing valve springs on the market today\u003c\/li\u003e\n\u003cli\u003eNo degradation of spring pressure in the later stages of a race\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460563030152,"sku":"man221443-16","price":529.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/e6ee4dbcd48916ca835619738f333154L.jpg?v=1787943808"},{"product_id":"manley-7-degree-1-250in-spring-od-16pc-steel-valve-spring-retainers-for-manley-22409-22410-22411-23651-16","title":"Manley 7 Degree 1.250in Spring OD 16pc Steel Valve Spring Retainers for Manley 22409 \/ 22410 \/ 22411 - 23651-16","description":"\u003cp\u003eManley Valve Spring Retainers are engineered using finite element analysis and CNC machined to exacting tolerances to deliver unmatched strength and performance. These retainers reduce valvetrain mass, improve RPM potential, and ensure superior valve control in the most demanding racing applications.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCNC machined to exacting tolerances\u003c\/li\u003e\n\u003cli\u003eThru-hardened 4140 chrome moly\u003c\/li\u003e\n\u003cli\u003eBulk Pricing Available\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460563554440,"sku":"man23651-16","price":80.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/d5d40c7892594cb55df535f7f5e4a6f4_32db2690-68ca-4524-a864-4dbddfed230e.jpg?v=1787943813"},{"product_id":"manley-7-degree-std-32pc-titanium-retainers-for-manley-221419-23605-32","title":"Manley 7 Degree STD 32pc Titanium Retainers for Manley 221419 - 23605-32","description":"\u003cp\u003eUpgrade your valve train with Manley Performance Titanium Retainers and other lightweight titanium options designed specifically for high-revving engines. Machined from aerospace-grade heat-treated 6AL-4V titanium, these retainers dramatically reduce valvetrain mass for quicker rev-up, improved valve control and enhanced overall responsiveness. The reduced weight helps your engine hold spring pressure at high RPM, minimizing float and unlocking more performance potential in race or aggressive street applications. Lightweight, strong, and precision-built for serious performance.\u003c\/p\u003e\n\u003cp\u003eManley Spring Retainer, RET-TI 1.101 7 DEG 221419.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCAD designed for ultimate reduction in mass without sacrificing strength\u003c\/li\u003e\n\u003cli\u003eUse Manley P\/N 13098 (recommended) or factory Chevrolet LT valve locks\u003c\/li\u003e\n\u003cli\u003eSames as 23625 but +.045\" more installed height\u003c\/li\u003e\n\u003cli\u003eSpecial 6AL-4V titanium for maximum strength\u003c\/li\u003e\n\u003cli\u003eMust use 7 valve locks\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460564701320,"sku":"man23605-32","price":554.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/1234558071174264e9f4b44e854df8cc_34506396-4a97-4149-a715-ef5ddf558332.jpg?v=1787943823"},{"product_id":"manley-7-degree-070in-height-32pc-steel-h-13-tool-steel-spring-retainers-for-manley-221419-23605ts-32","title":"Manley 7 Degree +.070in Height 32pc Steel H-13 Tool Steel Spring Retainers for Manley 221419 - 23605TS-32","description":"\u003cp\u003eFor those searching for a slightly more economical alternative to titanium retainers, either to help solve a wear problem or because of class rules, Manley lightweight H-13 Tool Steel retainers are your solution! H-13 tool steel allows for better processing than other tool steels typically utilized\u003c\/p\u003e\n\u003cp\u003eManley Spring Retainer, RET-H-13 1.101 7 DEG 221419.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eUp to 33% lighter than standard 10° steel retainers\u003c\/li\u003e\n\u003cli\u003eOnly 2-4 grams heavier than titanium versions\u003c\/li\u003e\n\u003cli\u003eHeat treated to provide a hardness of Rc 56\u003c\/li\u003e\n\u003cli\u003eBest bang for the buck\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460564734088,"sku":"man23605TS-32","price":557.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/1234558071174264e9f4b44e854df8cc_b53137ee-1d23-4eaa-abe6-a299da36a0a0.jpg?v=1787943823"},{"product_id":"manley-90-06-mitsubishi-4g63-4g63t-dsm-evo-dohc-16-valve-spring-and-retainer-kit-w-o-valve-locks-26125","title":"Manley 90-06 Mitsubishi 4G63-4G63T DSM \/ EVO DOHC 16 Valve Spring and Retainer Kit (w\/o Valve Locks) - 26125","description":"\u003cp\u003eManley Performance Valve spring and Retainer Kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these kits, featuring premium springs, retainers, designed to handle aggressive aftermarket camshafts.\u003c\/p\u003e\n\u003cp\u003eManley Sport Compatct Valve Spring and Retainer Kit\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIncludes matched Valve Springs, Retainers, and Locks (if part number ends in \"K\"). Spring Locators included in some applications.\u003c\/li\u003e\n\u003cli\u003eIncludes 7  Machined Valve Locks manufactured from the premium quality heat treated steel\u003c\/li\u003e\n\u003cli\u003eHeat treated aerospace grade titanium retainers CNC machined to exacting tolerances\u003c\/li\u003e\n\u003cli\u003eDesigned to handle aftermarket camshafts and up to 10,000 RPM\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460565782664,"sku":"man26125","price":256.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/group-e45d01a3-7621-4dfe-874e-76d6ca2e21aa-800.jpg?v=1787943836"},{"product_id":"manley-7-degree-050in-height-16pc-steel-4140-chromoly-steel-spring-retainers-23652-16","title":"Manley 7 Degree +.050in Height 16pc Steel 4140 Chromoly Steel Spring Retainers - 23652-16","description":"\u003cp\u003eManley Valve Spring Retainers are engineered using finite element analysis and CNC machined to exacting tolerances to deliver unmatched strength and performance. These retainers reduce valvetrain mass, improve RPM potential, and ensure superior valve control in the most demanding racing applications.\u003c\/p\u003e\n\u003cp\u003eManley Spring Retainer, RET-STEEL 1.250,+.050.\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCNC machined to exacting tolerances\u003c\/li\u003e\n\u003cli\u003eThru-hardened 4140 chrome moly\u003c\/li\u003e\n\u003cli\u003eBulk Pricing Available\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460565880968,"sku":"man23652-16","price":80.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/1234558071174264e9f4b44e854df8cc_d917142f-c80c-4047-a22a-1045eecc89be.jpg?v=1787943836"},{"product_id":"manley-gm-ls-series-660in-max-lift-valve-spring-and-retainer-kit-26362334ks","title":"Manley GM LS Series .660in Max Lift Valve Spring and Retainer Kit - 26362334KS","description":"\u003cp\u003eManley Performance LS \u0026amp; LT NexTek® valve spring kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these all-inclusive kits, featuring premium springs, retainers, I.D. locators, locks, and Viton? seals.\u003c\/p\u003e\n\u003cp\u003eManley LS Valve Spring Kit, KIT-SPRING\/RETAINER\/LOCATOR\/LOCK\/SEAL\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eManley LS and LT Valve Spring Kits provide a complete, engineered solution, ensuring seamless compatibility for higher-lift camshafts and eliminating concerns with mismatched components.\u003c\/li\u003e\n\u003cli\u003eNexTek  Valve Springs are manufactured from \"super clean\" Hi-Tensile Chrome Silicon steel and shot-peened to MIL spec for maximum fatigue life. Spring No. 221436-16\u003c\/li\u003e\n\u003cli\u003e7  Machined Valve Locks use the highest quality steel alloy and are heat treated and black oxide finished. For 8mm (.3135\") valve stem. Lock No. 13098-16\u003c\/li\u003e\n\u003cli\u003e7  Titanium Retainer CAD designed for ultimate reduction in mass without sacrificing strength. Retainer No. 23623-16 (Std. Installed Height)\u003c\/li\u003e\n\u003cli\u003eI.D. Valve Spring Locator is CNC machined, heat treated, and black oxide finished. Locator No. 42334-16 (.505\" ID)\u003c\/li\u003e\n\u003cli\u003eViton Valve Stem Seals offer exceptional resistance to heat, chemicals, and oils. Seal No. 24042-16\u003c\/li\u003e\n\u003cli\u003eNote: Max. lift figures above may vary depending upon the cylinder head and installed height.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460567027848,"sku":"man26362334KS","price":518.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/b6e653469a7f57283d27bed9dc2a9ccfL.jpg?v=1787943849"},{"product_id":"manley-spring-cup-505in-id-1-270in-od-valve-spring-locator-for-221436-16-42334-16","title":"Manley Spring Cup .505in ID 1.270in OD Valve Spring Locator (For 221436-16) - 42334-16","description":"\u003cp\u003eManley Performance Valve Spring Cups provide a precision-machined, durable foundation for valve springs while protecting the cylinder head from spring wear. Manufactured from premium materials and held to exacting tolerances, they help maintain proper spring alignment for reliable valvetrain performance in both street and racing applications.\u003c\/p\u003e\n\u003cp\u003eManley Valve Spring Seat, SPRING CUP-ID 1.290.\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460568338568,"sku":"man42334-16","price":94.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/d5d40c7892594cb55df535f7f5e4a6f4_105f8a48-d6c8-4cc4-83da-a27a34fd3bdb.jpg?v=1787943861"},{"product_id":"manley-toyota-supra-2jzgt-2jzgte-6cyl-valve-spring-and-retainer-kit-w-o-valve-locks-26130","title":"Manley Toyota Supra 2JZGT\/2JZGTE 6cyl Valve Spring and Retainer Kit (w\/o Valve Locks) - 26130","description":"\u003cp\u003eManley Performance Valve spring and Retainer Kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these kits, featuring premium springs, retainers, designed to handle aggressive aftermarket camshafts.\u003c\/p\u003e\n\u003cp\u003eManley Sport Compatct Valve Spring and Retainer Kit\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIncludes matched Valve Springs, Retainers, and Locks (if part number ends in \"K\"). Spring Locators included in some applications.\u003c\/li\u003e\n\u003cli\u003eIncludes 7  Machined Valve Locks manufactured from the premium quality heat treated steel\u003c\/li\u003e\n\u003cli\u003eHeat treated aerospace grade titanium retainers CNC machined to exacting tolerances\u003c\/li\u003e\n\u003cli\u003eDesigned to handle aftermarket camshafts and up to 10,000 RPM\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460571975816,"sku":"man26130","price":514.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/group-e45d01a3-7621-4dfe-874e-76d6ca2e21aa-800_7d9e24b8-4e13-4c96-9e12-1b0e15c868f8.jpg?v=1787943897"},{"product_id":"manley-subaru-wrx-sti-ej20-ej25-16pc-valve-springs-1-126-640-for-use-w-23185-16-retainers-22185-16","title":"Manley Subaru WRX\/STI (EJ20\/EJ25) 16pc Valve Springs  (1.126\/.640)  (For use w\/ 23185-16 Retainers) - 22185-16","description":"\u003cp\u003eEngineered for today’s high-revving sport compact engines, Manley valve springs deliver exceptional durability, precise control, and consistent performance. Manufactured from premium alloys and designed for demanding turbocharged and naturally aspirated applications, they ensure reliable valvetrain stability at elevated RPM and boost levels.\u003c\/p\u003e\n\u003cp\u003eSingle Conical Ovate Wire\u003c\/p\u003e\n\u003ch4\u003eFeatures \u0026amp; Benefits\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRevs up to 10,000 RPM with Manley titanium retainers\u003c\/li\u003e\n\u003cli\u003eDesigned to handle aftermarket camshafts\u003c\/li\u003e\n\u003cli\u003eWound from super clean alloy\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":46460572696712,"sku":"man22185-16","price":338.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/2491\/6104\/files\/group-6065cbdd-f17a-46ca-ab39-37facd739bd4-800.jpg?v=1787943906"}],"url":"https:\/\/www.allianceracing.com\/collections\/engine-components-valve-springs-retainers.oembed?page=3","provider":"Alliance Racing","version":"1.0","type":"link"}