Unleash Aggressive JDM Engine Power With Manley Performance
Unleash aggressive engine power with the Manley Performance collection at HD Werks, featuring genuine, high-performance components engineered for racing and aftermarket tuning. These original parts deliver custom upgrades that optimize engine performance and boost power output. Designed with Japanese precision, Manley Performance products offer authentic quality and reliable dynamic enhancements for superior driving. Experience improved throttle response with parts built for aggressive tuning. Shop our Manley Performance range for original components that transform your engine into a true performance beast.
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Vendor:Manley PerformanceManley Chrysler 440-1 Indy Cylinder Heads Race Master Exhaust Valves (Set of 8)
Regular price $179.99Regular price$239.60-$59.61 Sale price $179.99 -
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Vendor:Manley PerformanceManley Pontiac 400-428-455 1.770 Race Master Exhaust Valves (Set of 8)
Regular price $179.99Regular price$239.60-$59.61 Sale price $179.99 -
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Vendor:Manley PerformanceManley Small Block Chevrolet 1.625 Head DIA / .3110in Stem DIA Race Master Exhaust Valves (Set of 8)
Regular price $257.99Regular price -
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Vendor:Manley PerformanceManley Chrysler 426 Hemi Race Master Exhaust Valves (Set of 8)
Regular price $179.99Regular price$239.60-$59.61 Sale price $179.99 -
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Vendor:Manley PerformanceManley Chrysler 426 Hemi Race Master Exhaust Valves (Set of 8)
Regular price $179.99Regular price$239.60-$59.61 Sale price $179.99 -
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Vendor:Manley PerformanceManley Chevy LS 8mm Stem Severe Duty Custom Stainless Exhaust Valves Blank (Set of 8)
Regular price $322.99Regular price$430.39-$107.40 Sale price $322.99 -
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Manley Gen II Custom Valve E/D Max H/D 2.060 Max O/A Length 6.700
Regular price $525.99Regular price$700.72-$174.73 Sale price $525.99 -
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Vendor:Manley PerformanceManley Chevy LS 8mm Stem Severe Duty Custom Stainless Intake Valves Blank (Set of 8)
Regular price $345.99Regular price$461.33-$115.34 Sale price $345.99 -
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Vendor:Manley PerformanceManley Chevy LS 8mm Stem Race Series Custom Stainless Exhaust Valves Blank (Set of 8)
Regular price $274.99Regular price$366.02-$91.03 Sale price $274.99 -
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Manley Gen II Race Series 35.0mm Custom SS Intake Valve (SINGLE VALVE)
Regular price $34.99Regular price$45.75-$10.76 Sale price $34.99 -
Sold outVendor:Manley Performance
Manley Gen II Extreme Duty Custom SS Intake Valve 1.065in Head Dia 4.070in L 0.2345in Stem - SINGLE
Regular price $64.99Regular price$86.30-$21.31 Sale price $64.99 -
Sold outVendor:Manley Performance
Manley Gen II Race Series 58.4mm Custom SS Intake Valve - Single
Regular price $34.99Regular price$45.75-$10.76 Sale price $34.99 -
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Vendor:Manley PerformanceManley Chevy Small Block Severe Duty Valves 2.020in. Head Dia. / 5.010in. OA L (Set of 8)
Regular price $286.99Regular price$382.30-$95.31 Sale price $286.99 -
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Vendor:Manley PerformanceManley Chevy Small Block Severe Duty Valves (Set of 8)
Regular price $286.99Regular price$382.30-$95.31 Sale price $286.99 -
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Manley Gen II Race Series 55.9mm Head Dia 142.2mm Length Severe Duty Intake Valve (SINGLE VALVE)
Regular price $43.99Regular price$57.66-$13.67 Sale price $43.99 -
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Vendor:Manley PerformanceManley Gen II 1.65in Pro-Flo Custom Stainless Steel Exhaust Valves (Set of 8)
Regular price $264.99Regular price$353.23-$88.24 Sale price $264.99 -
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Vendor:Manley PerformanceManley Gen II 2.15in Pro-Flo Custom Stainless Steel Intake Valves (Set of 8)
Regular price $264.99Regular price$353.23-$88.24 Sale price $264.99 -
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Vendor:Manley PerformanceManley Gen II Race Master Series 38.5mm Custom SS Exhaust Valves (Set of 4)
Regular price $132.99Regular price$176.62-$43.63 Sale price $132.99 -
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Vendor:Manley PerformanceManley Gen II Race Master Series 38.5mm Custom SS Exhaust Valves (Single)
Regular price $33.99Regular price$44.15-$10.16 Sale price $33.99 -
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Vendor:Manley PerformanceManley Gen II Race Master Series 48.5mm Custom SS Intake Valves (Set of 4)
Regular price $132.99Regular price$176.62-$43.63 Sale price $132.99 -
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Vendor:Manley PerformanceManley Ford 2.3L EcoBoost Exhaust 30.5mm Stainless Extreme Duty Valves
Regular price $522.99Regular price$652.79-$129.80 Sale price $522.99 -
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Vendor:Manley PerformanceManley Ford 2.3L EcoBoost Exhaust 33mm Stainless Race Master Valves
Regular price $201.99Regular price$251.36-$49.37 Sale price $201.99 -
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Vendor:Manley PerformanceManley Ford 2.3L EcoBoost Exhaust 30mm Stainless Extreme Duty Valves
Regular price $522.99Regular price$652.79-$129.80 Sale price $522.99 -
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Manley Ford 2.3L EcoBoost Intake 32.5mm Stainless Race Flo Valves
Regular price $201.99Regular price$251.36-$49.37 Sale price $201.99 -
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Vendor:Manley PerformanceManley Nissan Patrol 35.5mm Race Master Exhaust Valves (Set of 12)
Regular price $460.99Regular price$575.31-$114.32 Sale price $460.99 -
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Vendor:Manley PerformanceManley Nissan Patrol 35mm Race Master Exhaust Valves (Set of 12)
Regular price $460.99Regular price$575.31-$114.32 Sale price $460.99 -
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Manley Nissan Patrol 40.5mm Race Master Intake Valves (Set of 12)
Regular price $460.99Regular price$575.31-$114.32 Sale price $460.99 -
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Vendor:Manley PerformanceManley Nissan Patrol 35mm Race Master Exhaust Valves (Set of 12)
Regular price $460.99Regular price$575.31-$114.32 Sale price $460.99 -
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Manley Nissan Patrol 40mm Race Master Intake Valves (Set of 12)
Regular price $460.99Regular price$575.31-$114.32 Sale price $460.99 -
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Vendor:Manley PerformanceManley Nissan 2.6L Inline 6-24 Valve RB26DET/T 31.15mm Stainless Race Flo Exhaust Valves
Regular price $427.99Regular price$534.43-$106.44 Sale price $427.99 -
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Vendor:Manley PerformanceManley Nissan 2.6L Inline 6-24 Valve RB26DET(T) 35.6mm Stainless Race Flo Intake Valve
Regular price $301.99Regular price$377.05-$75.06 Sale price $301.99 -
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Vendor:Manley PerformanceManley Nissan 2.6L Inline 6-24 Valve (RB26DET/T) Exhaust 30.15mm Stainless Race Flo Valves
Regular price $427.99Regular price$534.43-$106.44 Sale price $427.99 -
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Vendor:Manley PerformanceManley Nissan 2.6L Inline 6-24 Valve (RB26DET/T) Exhaust 30.15mm Stainless Race Flo Valve (SINGLE)
Regular price $35.99Regular price$44.54-$8.55 Sale price $35.99 -
Sold outVendor:Manley Performance
Manley Nissan 2.6L Inline 6-24 Valve (RB26DET/T) Intake 34.6mm Stainless Race Flo Valves
Regular price $301.99Regular price$377.05-$75.06 Sale price $301.99 -
Sold outVendor:Manley Performance
Manley Nissan 2.6L Inline 6-24 Valve (RB26DET/T) Intake 34.6mm Stainless Race Flo Valve (SINGLE)
Regular price $25.99Regular price$31.42-$5.43 Sale price $25.99
