Manley Performance

Manley Chevrolet Big Block Exhaust Valve Kit - 1.800in Head Dia. 5.930in O/A Length, 0.3415in Stem - 12341-8

Valves

SKUman12341-8

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Manley Valve...

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Manley SR 20 Brodix Severe Duty Series Stainless Steel Exhaust Valves 2.400in Dia 6.030 L - Set of 8 - 12344-8

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Manley Performance

Manley SR 20 Brodix Severe Duty Series Stainless Steel Exhaust Valves 2.400in Dia 6.030 L - Set of 8 - 12344-8

Valves

SKUman12344-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$311.48~~$415.30~~ Save $103.82

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Manley Chevrolet Small Block Intake Valve Kit - 2.050in Head Dia. 4.935in O/A Length, 0.3133in Stem - 12304-8

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Manley Performance

Manley Chevrolet Small Block Intake Valve Kit - 2.050in Head Dia. 4.935in O/A Length, 0.3133in Stem - 12304-8

Valves

SKUman12304-8

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Manley Valve...

$202.55~~$270.06~~ Save $67.51

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Manley 62-01 Ford Boss 351C-M 1.73in x 7/16in Aluminum Roller Rocker Arm Kit - 432895-16

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Manley Performance

Manley 62-01 Ford Boss 351C-M 1.73in x 7/16in Aluminum Roller Rocker Arm Kit - 432895-16

Rocker Arms

SKUman432895-16

Our all-new Pro Series Billet Aluminum Rocker Arms are engineered for top performance across street, strip, and track applications. Machined from high-quality 2024 billet aluminum extrusions, these rockers feature precision-ground needle and...

$414.99

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Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12815-8

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Manley Performance

Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12815-8

Valves

SKUman12815-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$301.07~~$401.42~~ Save $100.35

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Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8

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Manley Performance

Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8

Valves

SKUman11519-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$301.07~~$401.42~~ Save $100.35

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Manley 07+ Toyota 3UF-FE 5.7L 10cc Platinum Series Dish Extreme Duty Piston Set - 648100CE-8

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Manley Performance

Manley 07+ Toyota 3UF-FE 5.7L 10cc Platinum Series Dish Extreme Duty Piston Set - 648100CE-8

Piston Sets - Forged - 8cyl

SKUman648100CE-8

Our signature "Platinum Series" pistons feature 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers. Join the ranks of professional...

$1,702.01~~$1,897.87~~ Save $195.86

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California emissions review

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Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.110in O/A Length, 0.3110in Stem - 11710-8

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Manley Performance

Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.110in O/A Length, 0.3110in Stem - 11710-8

Valves

SKUman11710-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$301.07~~$401.42~~ Save $100.35

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Manley 04+ Subaru WRX STi (EJ257) 99.5mm Bore STD Stroke -17cc Dish Piston/Ring Set - 632800C-4

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Manley Performance

Manley 04+ Subaru WRX STi (EJ257) 99.5mm Bore STD Stroke -17cc Dish Piston/Ring Set - 632800C-4

Piston Sets - Forged - 4cyl

SKUman632800C-4

Our signature "Platinum Series" pistons feature 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers. Join the ranks of professional...

$788.22~~$878.92~~ Save $90.70

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California emissions review

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Manley Nissan 3.5L V6 (VQ35DE VQ35DET) DOHC 24 Intake 37mm Stainless Race Master Valves - 11148-12

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Manley Performance

Manley Nissan 3.5L V6 (VQ35DE VQ35DET) DOHC 24 Intake 37mm Stainless Race Master Valves - 11148-12

Valves

SKUman11148-12

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Features &...

$437.02~~$561.15~~ Save $124.13

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Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8

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Manley Performance

Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8

Valves

SKUman11535-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$301.07~~$401.42~~ Save $100.35

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Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3110in Stem - 12842-8

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Manley Performance

Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3110in Stem - 12842-8

Valves

SKUman12842-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$311.48~~$415.30~~ Save $103.82

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Manley 09+ Chrysler Hemi 5.7L w/ Bead Loc Groove 2.050in Race Flo Exhaust Valves (Set of 8) - 11694B-8

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Manley Performance

Manley 09+ Chrysler Hemi 5.7L w/ Bead Loc Groove 2.050in Race Flo Exhaust Valves (Set of 8) - 11694B-8

Valves

SKUman11694B-8

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Manley Valve...

$198.46~~$264.61~~ Save $66.15

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Manley Ford Coyote 5.0L Gen. 1/2 31mm Diameter 4.274in. Length Race Master Exhaust Valves (Set of 8) - 11623B-8

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Manley Performance

Manley Ford Coyote 5.0L Gen. 1/2 31mm Diameter 4.274in. Length Race Master Exhaust Valves (Set of 8) - 11623B-8

Valves

SKUman11623B-8

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Manley Valve...

$202.55~~$270.06~~ Save $67.51

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Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.444in O/A Length, 0.3110in Stem - 12784-8

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Manley Performance

Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.444in O/A Length, 0.3110in Stem - 12784-8

Valves

SKUman12784-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$311.48~~$415.30~~ Save $103.82

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Manley Ford 429intake Valve Kit - 2.300in Head Dia. 5.725in O/A Length, 0.3415in Stem - 11588-8

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Manley Performance

Manley Ford 429intake Valve Kit - 2.300in Head Dia. 5.725in O/A Length, 0.3415in Stem - 11588-8

Valves

SKUman11588-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$311.48~~$415.30~~ Save $103.82

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Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.240in O/A Length, 0.3415in Stem - 11778-8

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Manley Performance

Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.240in O/A Length, 0.3415in Stem - 11778-8

Valves

SKUman11778-8

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Manley Valve...

$188.69~~$251.58~~ Save $62.89

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Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.110in O/A Length, 0.3110in Stem - 12316-8

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Manley Performance

Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.110in O/A Length, 0.3110in Stem - 12316-8

Valves

SKUman12316-8

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Manley Valve...

$202.55~~$270.06~~ Save $67.51

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Manley Honda 2.2L H22A1 intake Valve Kit - 36.00mm Head Dia. 106.65mm O/A Length, 0.2157in Stem - 11396-8

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Manley Performance

Manley Honda 2.2L H22A1 intake Valve Kit - 36.00mm Head Dia. 106.65mm O/A Length, 0.2157in Stem - 11396-8

Valves

SKUman11396-8

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Manley Valve...

$205.54~~$263.93~~ Save $58.39

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Manley Chevy Big Block Chevy 1.880in Severe Duty Exhaust Valves - 12843-8

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Manley Performance

Manley Chevy Big Block Chevy 1.880in Severe Duty Exhaust Valves - 12843-8

Valves

SKUman12843-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$301.07~~$401.42~~ Save $100.35

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Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8

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Manley Performance

Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8

Valves

SKUman11829-8

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Manley Valve...

$188.69~~$251.58~~ Save $62.89

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Manley Small Block Chevy 1.600in Head Dia Severe Duty Exhaust Valves (Set of 8) - 12337-8

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Manley Performance

Manley Small Block Chevy 1.600in Head Dia Severe Duty Exhaust Valves (Set of 8) - 12337-8

Valves

SKUman12337-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$301.07~~$401.42~~ Save $100.35

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Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.640in O/A Length, 0.3110in Stem - 11343-8

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Manley Performance

Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.640in O/A Length, 0.3110in Stem - 11343-8

Valves

SKUman11343-8

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Manley Valve...

$202.55~~$270.06~~ Save $67.51

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Manley Chevrolet Big Block 2.300 Head, .3415 Stem, .350 Longer Severe Duty Valves (Set of 8) - 11878-8

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Manley Performance

Manley Chevrolet Big Block 2.300 Head, .3415 Stem, .350 Longer Severe Duty Valves (Set of 8) - 11878-8

Valves

SKUman11878-8

Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for...

$311.48~~$415.30~~ Save $103.82

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Find the exact part

Manley Performance

Available parts

Manley Chevrolet Big Block Exhaust Valve Kit - 1.800in Head Dia. 5.930in O/A Length, 0.3415in Stem - 12341-8

Manley SR 20 Brodix Severe Duty Series Stainless Steel Exhaust Valves 2.400in Dia 6.030 L - Set of 8 - 12344-8

Manley Chevrolet Small Block Intake Valve Kit - 2.050in Head Dia. 4.935in O/A Length, 0.3133in Stem - 12304-8

Manley 62-01 Ford Boss 351C-M 1.73in x 7/16in Aluminum Roller Rocker Arm Kit - 432895-16

Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12815-8

Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8

Manley 07+ Toyota 3UF-FE 5.7L 10cc Platinum Series Dish Extreme Duty Piston Set - 648100CE-8

Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.110in O/A Length, 0.3110in Stem - 11710-8

Manley 04+ Subaru WRX STi (EJ257) 99.5mm Bore STD Stroke -17cc Dish Piston/Ring Set - 632800C-4

Manley Nissan 3.5L V6 (VQ35DE VQ35DET) DOHC 24 Intake 37mm Stainless Race Master Valves - 11148-12

Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8

Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3110in Stem - 12842-8

Manley 09+ Chrysler Hemi 5.7L w/ Bead Loc Groove 2.050in Race Flo Exhaust Valves (Set of 8) - 11694B-8

Manley Ford Coyote 5.0L Gen. 1/2 31mm Diameter 4.274in. Length Race Master Exhaust Valves (Set of 8) - 11623B-8

Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.444in O/A Length, 0.3110in Stem - 12784-8

Manley Ford 429intake Valve Kit - 2.300in Head Dia. 5.725in O/A Length, 0.3415in Stem - 11588-8

Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.240in O/A Length, 0.3415in Stem - 11778-8

Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.110in O/A Length, 0.3110in Stem - 12316-8

Manley Honda 2.2L H22A1 intake Valve Kit - 36.00mm Head Dia. 106.65mm O/A Length, 0.2157in Stem - 11396-8

Manley Chevy Big Block Chevy 1.880in Severe Duty Exhaust Valves - 12843-8

Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8

Manley Small Block Chevy 1.600in Head Dia Severe Duty Exhaust Valves (Set of 8) - 12337-8

Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.640in O/A Length, 0.3110in Stem - 11343-8

Manley Chevrolet Big Block 2.300 Head, .3415 Stem, .350 Longer Severe Duty Valves (Set of 8) - 11878-8

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