{"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","url":"https:\/\/www.allianceracing.com\/products\/manley-gm-ls-series-super-finished-h-p-valve-springs-650-max-lift-16-pieces-221438-16","provider":"Alliance Racing","version":"1.0","type":"link"}