The valvetrain is the mechanical connection between the camshaft and intake and exhaust valves. It transforms the profiles of the rotating cam lobes into the opening and closing motion of the valves. Overhead Valve (OHV) engines have the most complex valvetrains with lifters, pushrods, and rocker arms between the cam and valves, while Overhead Camshaft (OHC) engines are much simpler, with some designs having only bucket lifters between the cam and valves.

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    • (0 reviews)
      # sp103926
      Engine Push Rod by Edelbrock®. Designed utilizing the latest technology, this product by Edelbrock features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet...
      The finest quality at a great priceWe carry everything needed to complete the job
      $127.87 - $231.96
    • (0 reviews)
      # sp103960
      Rocker Arms by Edelbrock®. Designed utilizing the latest technology, this product by Edelbrock features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $32.49 - $496.03
    • (0 reviews)
      # sp103970
      Valves by Edelbrock®. Designed utilizing the latest technology, this product by Edelbrock features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...
      The finest quality at a great priceWe carry everything needed to complete the job
      $21.40 - $201.27
    • (0 reviews)
      # sp96221
      Performance Valves and Valvetrain Parts by Manley®.
      $21.13 - $260.43
    • (0 reviews)
      # mpn457763065
      Race Series Stainless Steel Valves - Sport Compact by Manley®, 8 piece set. Valve made from XH-426 stainless Steel. R/F Mitsubishi 31.5mm. Head Diameter: 31.5mm. Margin: 0.065". O/A Length: 109.7mm. Seat Width: 0.080". Stem...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $150.50
    • (0 reviews)
      # mpn457763063
      Race Series Stainless Steel Valves - Sport Compact by Manley®, 8 piece set. Valve made from NK-842 stainless Steel. R/F Mitsubishi 34mm. Head Diameter: 34mm. Margin: 0.050". O/A Length: 109.7mm. Seat Width: 0.075". Stem Diameter:...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $137.73
    • (0 reviews)
      # mpn457763061
      Race Series Stainless Steel Valves - Sport Compact by Manley®, 8 piece set. Valve made from XH-426 stainless Steel. R/F Mitsubishi 30.5mm. Head Diameter: 30.5mm. Margin: 0.065". O/A Length: 109.7mm. Seat Width: 0.080". Stem...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $137.73
    • (0 reviews)
      # mpn457763066
      Race Series Stainless Steel Valves - Sport Compact by Manley®, 8 piece set. Valve made from NK-842 stainless Steel. R/F Mitsubishi 35mm. Head Diameter: 35mm. Margin: 0.050". O/A Length: 109.7mm. Seat Width: 0.075". Stem Diameter:...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $137.73
    • (0 reviews)
      # mpn457763149
      Sport Compact - Race Series Valves by Manley®. R/F Mitsubishi 34.5mm. Head Diameter: 34.5mm. Margin: 0.050". O/A Length: 109.7mm. Seat Width: 0.075". Stem Diameter: 6.57mm/.2587”. Tip Length: 3.8mm. Top of Head: 15° Dish....
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $137.73
    • (0 reviews)
      # mpn457763150
      Sport Compact - Race Series Valves by Manley®. R/F Mitsubishi 31mm. Head Diameter: 31mm. Margin: 0.065". O/A Length: 109.7mm. Seat Width: 0.080". Stem Diameter: 6.54mm/.2575”. Tip Length: 3.8mm. Top of Head: 17° Dish. Underhead...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $137.73
    • (0 reviews)
      # sp7054
      Alpha Series™ Valve Set by Skunk2®. With fully machined valve heads and hard chrome plating, these Alpha Series valves ensure optimized airflow. They are built from HNV3 martensitic steel (IN) and heat treated EV8 austenitic...
      Ensure optimum sealing, airflow, and stabilityMade from heat treated EV8 austenitic steel (EX) one-piece forgings and HNV3 martensitic steel (IN)
      $267.99
    • (0 reviews)
      # sp7058
      Ultra Series™ High Compression Valve Set by Skunk2®. Skunk2 Ultra Series valves are our premium line valves manufactured from HNV3 martensitic steel (IN) and EV8 austenitic steel (EX) one-piece forgings. These characteristics of...
      One-piece forgedChromium nitride coating
      $463.99
    • (0 reviews)
      # mpn2451626
      Ultra Series™ Race Rockers by Skunk2®. 8 per Pack. Race Rockers will perfectly meet your needs and make your life easier around the campsite or while traveling with Skunk2 accessories.
      Ceramic rollerLarge radius pad for high lift cams
      $1,149.99
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn1559089
      Push Rod by COMP Cams®. Hi-Tech™; Push Rods; 16 pc.; Hemi Set; 5/16 in. Dia.; 0.080 in. Thickness; 6.600/7.850 in. Length; Incl. PN[7974-8/7769-8].
      One Piece ChromemolyWith 0.3125 in. Ball Ends
      $150.26
    • (0 reviews)
      # mpn1559089
      Push Rod by COMP Cams®. Hi-Tech™; Push Rods; 16 pc.; Hemi Set; 5/16 in. Dia.; 0.080 in. Thickness; 6.600/7.850 in. Length; Incl. PN[7974-8/7769-8].
      One Piece ChromemolyWith 0.3125 in. Ball Ends
      $150.26
    • (0 reviews)
      # mpn1558081
      Push Rod by COMP Cams®. High Energy Push Rods; 16 pc.; 3/8 in. Dia.; 7.725 in. Int. Length; 8.684 Exh. Length.
      Meet Or Exceed Original Equipment SpecificationsMate Perfectly w/ High Energy Or Magnum Rockers
      $51.04
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn1559089
      Push Rod by COMP Cams®. Hi-Tech™; Push Rods; 16 pc.; Hemi Set; 5/16 in. Dia.; 0.080 in. Thickness; 6.600/7.850 in. Length; Incl. PN[7974-8/7769-8].
      One Piece ChromemolyWith 0.3125 in. Ball Ends
      $150.26
    • (0 reviews)
      # mpn1559089
      Push Rod by COMP Cams®. Hi-Tech™; Push Rods; 16 pc.; Hemi Set; 5/16 in. Dia.; 0.080 in. Thickness; 6.600/7.850 in. Length; Incl. PN[7974-8/7769-8].
      One Piece ChromemolyWith 0.3125 in. Ball Ends
      $150.26
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn1559089
      Push Rod by COMP Cams®. Hi-Tech™; Push Rods; 16 pc.; Hemi Set; 5/16 in. Dia.; 0.080 in. Thickness; 6.600/7.850 in. Length; Incl. PN[7974-8/7769-8].
      One Piece ChromemolyWith 0.3125 in. Ball Ends
      $150.26
    • (0 reviews)
      # mpn1558081
      Push Rod by COMP Cams®. High Energy Push Rods; 16 pc.; 3/8 in. Dia.; 7.725 in. Int. Length; 8.684 Exh. Length.
      Meet Or Exceed Original Equipment SpecificationsMate Perfectly w/ High Energy Or Magnum Rockers
      $51.04
    • (0 reviews)
      # mpn1559089
      Push Rod by COMP Cams®. Hi-Tech™; Push Rods; 16 pc.; Hemi Set; 5/16 in. Dia.; 0.080 in. Thickness; 6.600/7.850 in. Length; Incl. PN[7974-8/7769-8].
      One Piece ChromemolyWith 0.3125 in. Ball Ends
      $150.26
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn1559089
      Push Rod by COMP Cams®. Hi-Tech™; Push Rods; 16 pc.; Hemi Set; 5/16 in. Dia.; 0.080 in. Thickness; 6.600/7.850 in. Length; Incl. PN[7974-8/7769-8].
      One Piece ChromemolyWith 0.3125 in. Ball Ends
      $150.26
    • (0 reviews)
      # mpn1558081
      Push Rod by COMP Cams®. High Energy Push Rods; 16 pc.; 3/8 in. Dia.; 7.725 in. Int. Length; 8.684 Exh. Length.
      Meet Or Exceed Original Equipment SpecificationsMate Perfectly w/ High Energy Or Magnum Rockers
      $51.04
    • (0 reviews)
      # mpn1558081
      Push Rod by COMP Cams®. High Energy Push Rods; 16 pc.; 3/8 in. Dia.; 7.725 in. Int. Length; 8.684 Exh. Length.
      Meet Or Exceed Original Equipment SpecificationsMate Perfectly w/ High Energy Or Magnum Rockers
      $51.04
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn1177268
      Push Rod by COMP Cams®. High Energy Push Rods; 5/16 in. Dia.; 9.682 in. Length; 1 pc.
      Meet Or Exceed Original Equipment SpecificationsMate Perfectly w/ High Energy Or Magnum Rockers
      $3.15
    • (0 reviews)
      # mpn1558081
      Push Rod by COMP Cams®. High Energy Push Rods; 16 pc.; 3/8 in. Dia.; 7.725 in. Int. Length; 8.684 Exh. Length.
      Meet Or Exceed Original Equipment SpecificationsMate Perfectly w/ High Energy Or Magnum Rockers
      $51.04
    • (0 reviews)
      # mpn1679191
      Push Rod by COMP Cams®. Magnum Push Rods™; 5/16 in. Dia. + .100 in. Long.
      Affordable SolutionOne Piece .080 in. Wall Chromemoly Steel
      $143.83
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn1558081
      Push Rod by COMP Cams®. High Energy Push Rods; 16 pc.; 3/8 in. Dia.; 7.725 in. Int. Length; 8.684 Exh. Length.
      Meet Or Exceed Original Equipment SpecificationsMate Perfectly w/ High Energy Or Magnum Rockers
      $51.04
    • (0 reviews)
      # mpn1559089
      Push Rod by COMP Cams®. Hi-Tech™; Push Rods; 16 pc.; Hemi Set; 5/16 in. Dia.; 0.080 in. Thickness; 6.600/7.850 in. Length; Incl. PN[7974-8/7769-8].
      One Piece ChromemolyWith 0.3125 in. Ball Ends
      $150.26
    • (0 reviews)
      # mpn758038
      Push Rod by COMP Cams®. Magnum Pushrods; 3/8 in. Dia.; 8.680 in. Intake/9.652 Exhaust Length; 16 pc.
      Made From 0.080 in. Wall Chromemoly Steel TubingHeat Treated
      $127.99
    • (0 reviews)
      # mpn1559089
      Push Rod by COMP Cams®. Hi-Tech™; Push Rods; 16 pc.; Hemi Set; 5/16 in. Dia.; 0.080 in. Thickness; 6.600/7.850 in. Length; Incl. PN[7974-8/7769-8].
      One Piece ChromemolyWith 0.3125 in. Ball Ends
      $150.26
    • (2 reviews)
      # sp3317
      Rocker Arm by COMP Cams®. Designed utilizing the latest technology, this product by RHS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed...
      Next gen Ultra-Gold™ Rockers increase engine power, enhance valve train stability & improve oilingNew extrusion based on improvements developed through FEA analysis, resulting in an even stronger, stiffer body without compromising mass
      $7.75 - $1,695.37
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1548448
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $132.95
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1548448
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $132.95
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1680376
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Lifter Guides; Lifter Retainer; Retainer Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $137.65
    • (0 reviews)
      # mpn1548448
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $132.95
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1548448
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $132.95
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1548448
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $132.95
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61
    • (0 reviews)
      # mpn1559069
      Roller Lifter Installation Kit by COMP Cams®. Hydraulic Roller Lifter; Installation Kit; Incl. Camshaft Bolts; Lifter Guides; Lifter Retainer; Cam Retainer/Bolts.
      Time Saving KitsContains All Required Brand New Hardware
      $130.61




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    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.

    The OEMs switched to roller lifters long ago because roller operation made camshafts and lifters much more reliable than their flat-tappet predecessors. But reduced friction and improved durability are not the only benefits. Roller cams have much more aggressive ramp rates that would cause a flat tappet lifter to dig into the ramp.These ramp rates allow the valves to open faster and remain at high lift for most of the opening duration, which increases power. Roller cams are also much more tolerant of high valve spring pressure. Roller cam and lifter kits are available to convert older flat tappet engines.

    Performance pushrods have to operate reliably at RPMs and against valve spring pressures that would bend or break their OE counterparts. Most performance pushrods are made of strong chrome moly steel, and larger diameter pushrods are available for some applications. Overcoming friction, such as is created when rocker arms pivot on balls or shafts and slide across valve stem tips, uses horsepower. You can eliminate this friction and save weight by replacing OE steel rocker arms with lightweight aluminum roller fulcrum and roller tip rocker arms. These are often available in higher ratios to increase valve lift and power.

    Some cylinder heads can be fitted with larger valves, but they’re most often acquired as part of a complete set of performance cylinder heads. Larger valves allow more flow in and out of the combustion chamber for more power, but they can be heavier and high RPM use requires stronger valve springs to prevent valve float. High tensile strength dual or beehive springs with lightweight titanium retainers are state-of-the-art. Finally, there are some performance valvetrain components that have no OE counterpart. For example, stud girdles support and strengthen individual rocker stud valvetrains to prevent deflection.

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    Performance Valves and Valvetrain Parts Reviews

    Average rating:  5  5 - 20 reviews
    5 of 5
    Nicely Made Kit
    Nicely made shafts and rocker arms. Easy to install and fit well. Broke several retainers good idea to have backup supply.
    DPosted by Dorian (Caldwell, ID) / April 30, 2017
    1970 Buick Electra
    Was this review helpful for you? Yes
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