Valves & Valvetrain Parts
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- Livernois Motorsports®Rocker Arm BaseRocker Arm Base by Livernois Motorsports®.High quality at an affordable priceExpertly made from premium materials$176.99 - $247.79
- Livernois Motorsports®Rocker Bar BracesRocker Bar Braces by Livernois Motorsports®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...Made with precision and quality in mindDesigned to meet your specific needs$599.99
- Omix-ADA®Push RodPush Rod by Omix-ADA®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a hassle...Restores proper engine-drivetrain positioning and alignmentEliminates noise and vibration caused by worn, sagging mounts$3.41 - $11.14
- Omix-ADA®Rocker Arm BridgeRocker Arm Bridge by Omix-ADA®. Designed utilizing the latest technology, this product by Omix-ADA features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$4.55 - $12.01
- Omix-ADA®Rocker Arm PivotRocker Arm Pivot by Omix-ADA®. Designed utilizing the latest technology, this product by Omix-ADA features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$3.41 - $14.79
- Omix-ADA®Rocker ArmsRocker Arms by Omix-ADA®. Designed utilizing the latest technology, this product by Omix-ADA features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed...Made with precision and quality in mindDesigned to meet your specific needs$10.65 - $117.26
- Omix-ADA®Valve LifterValve Lifter by Omix-ADA®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a...Restores proper engine-drivetrain positioning and alignmentEliminates noise and vibration caused by worn, sagging mounts$17.03 - $28.28
- Omix-ADA®Valve SpringValve Spring by Omix-ADA®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a...Restores proper engine-drivetrain positioning and alignmentEliminates noise and vibration caused by worn, sagging mounts$8.58 - $11.14
- Skunk2®Alpha Series™ Valve SpringAlpha Series™ Valve Spring by Skunk2®. Valve springs made from supper-clean, chrome-silicone wire and designed to prevent valve float and maintain valvetrain stability and titanium retainers designed to significantly reduce valvetrain...Designed for proper valves operationSprings prevent valve float maintain valvetrain$180.64 - $226.88
- Skunk2®Alpha Series™ Valve Spring and Titanium Retainer KitAlpha Series™ Valve Spring and Titanium Retainer Kit by Skunk2®. These kit includes Alpha Series valve springs made from upper-clean, chrome-silicone wire and designed to prevent valve float and maintain valvetrain stability and...Designed for proper valves operationKit includes super-clean springs and titanium retainers$317.21 - $384.94
- Skunk2®Alpha™ Titanium RetainerAlpha™ Titanium Retainer by Skunk2®. Skunk2’s industry-leading Alpha Titanium Retainers are designed to significantly reduce valvetrain mass, resulting in more horsepower and improved valvetrain stability. Similar to...Made with precision and quality in mindDesigned to meet your specific needs$192.46
- Skunk2®Lost Motion Assembly Spring KitsLost Motion Assembly Spring Kits by Skunk2®. Skunk2 is proud to introduce its Lost Motion Assembly Spring Kits. The Skunk2 Lost Motion Assembly is an advanced spring device that is designed to put pre-load on the center portion of the...Manufactured exclusively from chrome silicone steelLatest 3D CAD (Computer Aided Design) modeling and FEA (Finite Element Analysis)$102.14
- Skunk2®Pro Series™ Titanium Retainer KitPro Series™ Titanium Retainer Kit by Skunk2®. Did you know that each of Skunk2's new Titanium Retainers is serialized for your protection? Each serial number provides Skunk2 with valuable information, like material batch specifics and...SerializedAerospace-Grade Materials$215.05
- Skunk2®Pro Series™ Valve Lock SetPro Series™ Valve Lock Set by Skunk2®. Skunk2 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...Made with precision and quality in mindDesigned to meet your specific needs$50.53
- Skunk2®Pro Series™ Valve SpringsPro Series™ Valve Springs by Skunk2®. Designed to handle the demands of extreme-lift camshafts operating at prolonged, high-rpm use at championship-level racing. Pro Series Valve Springs have been tested at speeds as high as 11,000...Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gainsDuring 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$395.70
- Skunk2®Spring Base KitSpring Base Kit by Skunk2®. Skunk2's high-quality Spring Bases are designed to allow cylinder head to accept Skunk2's higher-performance. Each Spring Base is manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite...Retainers are designed using 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis)Designed for proper valves operation$43.00
- AE®Valve GuideValve Guide by AE®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.18 - $7.88
- Arai Seisakusho®Valve Stem Oil SealValve Stem Oil Seal by Arai Seisakusho®. Valve stem seal (VSS) is installed in the valve guide in the engine head. And it is preventing that engine oil supplied in a head flows into a combustion chamber by going through a valve stem and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$1.83 - $5.78
- BD Diesel Performance®Valve SpringValve Spring by BD Diesel Performance®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Can be used on either the exhaust or intake valvesReplacement exhaust valve springs to allow for 60psi of back pressure with Exhaust Brakes$139.95
- Brian Crower®Valve GuidesValve Guides by Brian Crower®. Designed utilizing the latest technology, this product by Brian Crower features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$76.97 - $115.45
- Brian Crower®Valve Keepers and LocksValve Keepers and Locks by Brian Crower®. Billet performance valve stem keepers or locks are designed to fit Brian Crower and OEM retainers. Designed utilizing the latest technology, this product by Brian Crower features premium quality...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$105.13 - $157.68
- Brian Crower®Valve Spring & Retainer KitValve Spring & Retainer Kit by Brian Crower®. Designed for high RPM, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent...Designed to maximize horsepower and torque of your vehicleMade with meticulous attention to detail and unmatched craftsmanship$169.53 - $788.27
- Brian Crower®Valve Spring RetainerValve Spring Retainer by Brian Crower®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$12.37 - $296.73
- Brian Crower®Valve SpringsValve Springs by Brian Crower®. Designed for high RPM, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures.Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.80 - $265.85
- Canyon Engine®Valve GuideValve Guide by Canyon Engine®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.27 - $19.08
- Crane Cams®Anti-Pump Up Hydraulic LifterAnti-Pump Up Hydraulic Lifter by Crane Cams®. High-performance engine builders and street tuners who crave for maximum performance out of their vehicle, choose these top-grade performance products painstakingly designed by Crane Cams....Designed to unlock more performance out of your vehicleBump up engine power to the next level$8.04
- Crane Cams®Chromoly PushrodChromoly Pushrod by Crane Cams®. High-performance engine builders and street tuners who crave for maximum performance out of their vehicle, choose these top-grade performance products painstakingly designed by Crane Cams. Revel in an...Designed to unlock more performance out of your vehicleBump up engine power to the next level$16.31 - $137.14
- Crane Cams®Mechanical LifterMechanical Lifter by Crane Cams®. High-performance engine builders and street tuners who crave for maximum performance out of their vehicle, choose these top-grade performance products painstakingly designed by Crane Cams. Revel in an...Designed to unlock more performance out of your vehicleBump up engine power to the next level$7.55 - $107.39
- Crane Cams®OEM-Style Stud Mount Rocker ArmOEM-Style Stud Mount Rocker Arm by Crane Cams®. High-performance engine builders and street tuners who crave for maximum performance out of their vehicle, choose these top-grade performance products painstakingly designed by Crane Cams....Designed to unlock more performance out of your vehicleBump up engine power to the next level$5.74 - $121.69
- Crane Cams®Push Rod Guide PlatePush Rod Guide Plate by Crane Cams®. High-performance engine builders and street tuners who crave for maximum performance out of their vehicle, choose these top-grade performance products painstakingly designed by Crane Cams. Revel in...Designed to unlock more performance out of your vehicleBump up engine power to the next level$20.74
Valves allow gases to flow in and out of the cylinders, and seal the combustion chambers so compression can develop. They open and close in response to the lobes on the camshaft via the valvetrain. The air/fuel mixture flows in when the intake valve opens, and the spent exhaust gases flow out when the exhaust valve opens after the power stroke. Every engine has at least one intake and exhaust valve, while many have a pair of each.
Valvetrains differ according to camshaft location. On Over Head Valve engines the cam is in the cylinder block. On Over Head Cam engines one or two cams are on the cylinder head. On OHV engines lifters ride on the camshaft lobes, pushrods transfer motion up to the cylinder head, and rocker arms pivot on shafts or studs actuating the valves. OHC valvetrains may have pivoting rocker type followers and lash adjusters or buckets between the cam and valves.
Valvetrain problems are often caused by excessive clearance. As cam lobes, lifters/followers, pushrods, and rocker arms wear, clearance is increased. Once clearance starts to increase, the pounding experienced by each component becomes greater as the lash opens and is taken up during valve operation. This can result in bent pushrods and broken rocker arms. The most common valve failure is overheating, especially on exhaust valves, which causes the valve to “burn” and distort and/or crack.
Miles and engine heat can also take their toll on valve springs. The valve springs must have enough pressure to keep the valves closed and maintain valve lash. Seat pressure is usually 70-90 lbs. on a stock engine with open pressure at 200 lbs. or more. Weak valve springs can’t exert the proper amount of pressure, which can cause misfire and loss of power as engine speed increases, resulting in “valve float”, where the valves fail to close. In extreme cases valve float can allow the valves to contact the pistons on some engines, bending or breaking the valves and cracking or breaking the pistons.
Performance valvetrain components must be much stronger to function at high RPMs and overcome stiff valve spring pressure to open larger valves. Higher valve spring pressure is needed to prevent valve float at high RPM. Performance rocker arms and valve spring retainers are made of lighter materials to enable the engine to rev easier and achieve higher RPM, and components like roller lifters and roller rockers reduce power-robbing friction. Most performance pushrods are made of strong chrome moly steel, and larger diameter pushrods are available for some applications. No matter whether you’re looking for a stock replacement or a performance unit, we are your one-stop shop.
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