PRW Power High-Performance Engine Parts

PRW Power manufactures high-performance engine components for builders who demand strength, precision, and real value. From stud- and shaft-mounted rocker arms to flexplates,...

PRW Power manufactures high-performance engine components for builders who demand strength, precision, and real value. From stud- and shaft-mounted rocker arms to flexplates, harmonic balancers, water pumps, fasteners, and complete valvetrain systems, PRW parts are built to handle serious horsepower and sustained high RPM without compromise. Backed by rigorous quality control and real-world testing, PRW Power components deliver reliable performance on the street and at the track. Whether you’re upgrading a small block or big block, or building something uniquely your own, PRW Power engine parts provide the durability...

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PRW Platinum Series Shaft-Mount Rocker Arms

PRW Platinum Series shaft-mount rocker arm systems fulfill the needs of successful racers and performance engine builders at every level. The Performance Quotient PQx rocker arms are made from quality alloy extrusions. These systems include CNC-machined billet steel pedestals, and ground, steel alloy rocker shafts—along with PRW SCM-4135 alloy steel fasteners, studs, and bolts. PRW Platinum Series shaft-mount rocker complete kits include all the components and hardware required for a professional installation. Order the system recommended for your specific vehicle and engine size. Features, items, and specs: * Several systems to suit many cam profiles * 8 pairs of shaft-mount rockers with adjustable cup-style valve lash adjusters * SAE 42100 full complement precision needle and cage roller bearings * Rated up to 750 lbs. open spring pressure * Internal oiling system for long-lasting performance

4.3 out of 5 stars ( 10 )

$48.73

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$816.92

PRW Sportsman Steel Roller Tip Rocker Arms

PRW Sportsman steel roller tip rocker arms are an ideal choice for a significant cross-section of engines. Anything from a mild street rebuild to the performance demands of off-track, Circle Track, and drag racing. These 4340 chromoly steel rocker bodies feature a longer pivot slot for higher lift camshafts. They're much stronger than stamped steel, so rocker arm flex is negligible. The roller tip minimizes scrubbing from the valve stem pushing forcefully against the valve guide. This reduces friction and frees up an additional 15 to 30 hp over stock models. PRW Sportsman steel roller tip rocker arms are an excellent performance alternative to stock rockers. Order the set recommended for your specific vehicle and engine size. Features, items, and specs: * Wide assortment of ratios to suit almost any cam profile * PRW RockerLocs * Rated at 350 lbs. open spring pressure * Heat-treated pivot balls

3.68 out of 5 stars ( 34 )

$12.31

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$383.77

PRW Pro Series Stainless Steel Rocker Arms

PRW Pro Series stainless steel rocker arms are manufactured from lightweight, premium quality 17-4ph stainless steel—a superior alloy high in nickel and chromium. This rigid, premium material provides outstanding fatigue resistance, and high-yield strength to help resist deflection. These rocker arms feature full-cage, friction-reducing needle bearings, and extra-large trunnions to spread out the load and reduce wear. Each rocker body is hand-polished, assembled, and carefully inspected to deliver the finest quality available to the racing and performance industry. Reduce your valvetrain mass with durable, lightweight PRW Pro Series stainless steel rocker arms. Order the set recommended for your specific vehicle and engine size. Features, items, and specs: * Wide assortment of ratios to suit almost any cam profile * Each set of 16 comes complete with PRW RockerLocs * Stud-mount design provides plenty of clearance for large diameter springs * CNC-machined pushrod cups * Heat-treated steel nose rollers and shafts resist severity of racing and minimize scrubbing

4.0 out of 5 stars ( 5 )

$19.50

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$319.74

PRW Pro Series Shaft-Mount Rocker Arms

PRW Pro Series shaft-mount rocker arm kits are comprised of components from the finest manufacturers in the world. CNC machined billet steel pedestals, ground steel alloy rocker shafts, PRW alloy steel fasteners, and studs and bolts are included in the complete kits for a professional install. Each rocker body is relieved for extra valve spring clearance and anodized for added strength. Choose the kit designed for your vehicle.

5.0 out of 5 stars ( 1 )

$68.01

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$918.18

PRW Rocker Arm Shims

PRW rocker arm shims are available for your Chevy, Ford, and Mopar setups. Each kit includes several shims in three different thicknesses to gain the ideal fit for your rockers. Choose the set created for your vehicle.

5.0 out of 5 stars ( 5 )

$0.52

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$43.87

On Sale

PRW Pro Series Billet Aluminum Rocker Arms

PRW Pro Series billet aluminum rocker arms offer outstanding power and performance advantages for street, strip, and track applications. Laboriously made from high-strength 6061 T-6 aluminum extrusions, each piece is precision CNC-machined, and hand-finished to ensure the quality you expect from PRW. These stud-mount rockers are purposely machined to graciously allow for larger springs and retainers, with full-cage, friction-reducing needle bearings for added durability. PRW Pro Series billet aluminum rocker arms are used around the world by professional racers, engine builders, and hot rod enthusiasts. Order the set recommended for your specific vehicle and engine size. Features, items, and specs: * Wide assortment of ratios to suit almost any cam profile * PRW RockerLocs * Heat-treated steel nose rollers and shafts minimize wear between roller tip and valve stem * Rated at 750 lbs. open spring pressure * Internal oiling system for long-lasting performance * Distinctive blue anodized finish

1.92 out of 5 stars ( 12 )

$25.00

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$417.65

$22.50

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$375.88

PRW Elite Series Stainless Steel Full Roller Rocker Arms

Take your engine's performance to new heights with PRW Elite Series stainless steel full roller rocker arms, are engineered for maximum strength, speed, and precision. They are built for serious racers and performance enthusiasts who demand superior control and durability. Precision engineered with Direct Oil Feed Technology, a tight-fit nose roller axle, and E-Coated stainless steel rocker bodies, this series delivers smoother motion, increased RPM potential, and unmatched long-term reliability under extreme conditions. Features: * Rated up to 1000 lbs. open spring pressure * Direct Oil Feed Technology for enhanced lubrication and performance * 25% narrower roller reduces valve-end mass for higher RPM response * Precision-machined nose roller axle for smooth, friction-free motion * 12-Point polylocks included for secure, hassle-free installation

5.0 out of 5 stars ( 2 )

$488.61

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$505.48

PRW Dodge Cummins Rocker Arm Systems

PRW Dodge Cummins rocker arm systems are the perfect upgrade to provide more power and run your diesel engine more efficiently. Each rocker is made from alloy steel substantially stronger than stock. PRW Cummins shaft systems are manufactured to exceed OEM specifications as a "drop in" assembly using the stock arm ratios. The upgraded rocker arm systems are complete with everything you need, from ball adjusters and fasteners, along with silicon bronze bushings instead of OEM-style needled bearings for prolonged life expectancy. Note: some applications are pre-machined for high performance cylinder head stud kits.

3.0 out of 5 stars ( 2 )

$542.77

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$679.93

PRW Rocker Arm Adjuster Screws

PRW rocker arm adjuster screws are designed to thread into your rocker arm. They are made of hardened steel and feature a black oxide finish for maximum durability. The screws can be adjusted to the pushrod by using the internal Allen head and the 12-point locknut.

3.71 out of 5 stars ( 7 )

$3.38

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$88.11

PRW Shaft-Mount Rocker Arm Hold-Down Kits

PRW shaft-mount rocker arm hold-down kits are designed to help rocker arm shaft maintain roundness with attaching torque. Manufactured to OEM Mopar specifications to ensure the highest quality, the kits contain the hold-down retainers and bolts to secure both rocker arm shafts. Order the kit recommended for your specific vehicle and engine size.

5.0 out of 5 stars ( 2 )

$63.86

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$123.30

PRW Fulcrum Installation Tools for GM LS

Ever find yourself wishing there was a more manageable way to complete a rocker arms upgrade? PRW's fulcrum installation tools for GM LS applications are your solution. These tools are compatible with all stock LS rockers—and they can be used with a variety of fastening implements, including C-clamps, arbor presses, or bench vises. Eliminate the pain from your upgrade project with PRW fulcrum installation tools. Features, items, and specs may include: * Black-oxide plated * Magnetic base * Steel driver * Installation washers

5.0 out of 5 stars ( 5 )

$37.61

PRW Rocker Arm Studs

PRW rocker arm studs are premium engine fasteners, made from strong, heat-treated 4135 chromoly steel with rolled threads. They're designed to securely hold rocker arms in place, handling the extreme forces in race and high performance engines for reliable valvetrain operation. The studs are crucial for securing the rocker arms that open and close engine valves, often paired with poly locks and used in upgraded systems for better durability and performance than stock parts. Order the set recommended for your vehicle. Additional product details: * Material: Cold-formed from 4135 chromoly alloy steel for maximum strength * Construction: Rolled threads provide superior durability and resistance to stripping * Application: Engineered for high performance and racing engines where stock studs might fail * Function: They act as threaded posts in the cylinder head, anchoring the rocker arms and associated hardware (like poly locks) * Durability: Standard components can bend or break under high spring pressures and aggressive valve lift * Reliability: PRW studs provide a secure, dependable foundation for the valvetrain in demanding conditions * Upgrades: Essential when upgrading to stronger rocker arms or higher-rate valve springs

1.0 out of 5 stars ( 1 )

$3.89

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$48.23

PRW Rocker Arm Pedestals and Stands

High-rpm can cause fluctuation in your valvetrain, leading to damaged parts. Add strength and stability in your valvetrain with PRW rocker arm pedestals and stands.

Not Yet Reviewed

$5.35

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$220.35

PRW Rocker Arm Shafts

For maximum performance and longevity, PRW offers heavy-duty rocker shafts to keep your valvetrain inline. These rocker arm shafts are precision-made from quality material and are induction-hardened for strength and durability. Mount your rocker arms with confidence with PRW rocker arm shafts. Order the rocker arm shaft application best suited to fit your needs.

3.0 out of 5 stars ( 1 )

$149.26

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$329.18

PRW Billet Rocker Arm Stud Girdles

PRW billet rocker arm stud girdles are made from 6061-T6 aluminum, manufactured to exacting standards, and the solution to valvetrain instability. PRW stud girdles reduce rocker stud flex to retain critical valve lash adjustments. The result is more accurate valve lift and timing. PRW stud girdles are relieved at the factory to accommodate crankcase evacuation components without the need to visit your local machine shop. These products come complete with PRW RockerLocs. Grab yours today!

3.67 out of 5 stars ( 9 )

$182.46

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$302.59

PRW Rocker Arm Flange Nuts

PRW rocker arm flange nuts are designed for ultimate strength and locking force. They are cold forged from custom 4135 steel alloy and finished with black oxide. Secure your rocker arms with PRW flange nuts.

1.0 out of 5 stars ( 1 )

$1.61

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$16.48

PRW Pedestal-Shaft Rocker Arms

PRW pedestal-shaft rocker arms are made from 6061-T6 or Series 7000 2024 aircraft quality aluminum alloy extrusions. Each rocker body is relieved for extra valve spring clearance and anodized for added strength. Each rocker body is shot-peened and machined for extra valve spring clearance; then anodized for better cooling and added strength. Each rocker arm incorporates needle roller bearings from the finest manufacturers in the world. CNC-machined billet steel pedestals, center-ground steel alloy rocker shafts, and PRW Custom-4135 alloy steel fasteners, valve lash adjusters and 12-pt. lash nuts comprise the foundation of these rocker arm systems. The kits come with the components and necessary hardware required for a professional installation. Order the rocker arms designed for your application needs. Features and characteristics: * Rated 750 lbs. open spring pressure * Internal oiling system for long-lasting performance * SAE 42100 full complement precision needle and cage roller bearings * Available in 1.5 or 1.6 ratio, and 1.5/1.6 split-ratio assemblies

Not Yet Reviewed

$775.05

PRW Rocker Arm Jam Nuts

PRW rocker arm jam nuts are small items with a big role to play in the precise adjustment of your valvetrain. Manufactured from quality heat-treated steel, they will keep your PRW stud-mount rockers securely positioned for optimal performance. Available in a choice of thread diameters, choose the proper size for your rocker studs.

Not Yet Reviewed

$2.02

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$12.41

PRW Fulcrum Upgrade Kits for GM LS Series

PRW fulcrum upgrade kits for the GM LS Series engine are designed to improve your valvetrain performance by enhancing the rocker arms. They include replacement fulcrums, circlips, and fasteners. From there, you can decide on either drawn cup bearings, or silicone bronze bushings to complete your full set of 16. Transform your stock LS Series rocker arms into powerful performance trunnions with a fulcrum upgrade kit from PRW!

2.43 out of 5 stars ( 7 )

$138.68

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$190.02

PRW Power 12-Point Poly Locks

Upgrade your valvetrain stability with PRW Power 12-point poly locks, engineered for secure, precision rocker arm adjustment in high-performance applications. CNC-machined for accuracy, each poly lock features a flush-machined locking set screw and a shouldered design for positive wrench engagement, ensuring fast and reliable adjustments. Available for 3/8 in. (.550 in. O.D. shank) and 7/16 in. (.600 in. O.D. with .550 in. undercut) rocker studs, these poly locks deliver the durability and clamping force demanded by serious engine builders. Sold in sets of 16, PRW's 12-point design offers superior grip and ease of use in tight engine bays.

Not Yet Reviewed

$35.11

PRW Rocker Arm Bolts

PRW rocker arm bolts are offered in different underhead lengths, either individually or in sets of different quantities. They are manufactured from premium steel and treated with a black oxide finish. Choose the preferred size to meet your application needs.

Not Yet Reviewed

$2.36

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$180.71

PRW Sportsman Rocker Arm Pivot Balls

PRW Sportsman rocker arm pivot balls provide a low-friction point for the rocker arms to pivot on, which is essential for efficient valve actuation. Available in sets or individually, the pivot balls are heat-treated and feature a smooth finish with deep groves to resist galling and to allow plenty of oil flow. Select the size and quantity needed.

Not Yet Reviewed

$4.31

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$25.82

PRW RockerLocs

PRW RockerLocs stabilize your rockers. Constructed from 5140 chromoly steel and heat-treated, they are precision ground for excellent runout to keep your rocker arms in place. RockerLocs for PRW rocker arms and stud girdles are available in 3/8 in. and 7/16 in. diameters.

3.67 out of 5 stars ( 3 )

$2.78

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$70.58

PRW Fulcrum Upgrade Kits for Dodge Cummins Diesel

Strengthen your Dodge Cummins with a new PRW Fulcrum upgrade kit for your Dodge Cummins Diesel. These rocker arm Trunnion-style upgrade kits are designed to upgrade your rocker arms to a bronze, bushed assembly and helps alleviate rocker body wear. Bushings are ensured lubrication with oil flow channels machined into the fulcrum. Sold individually, or as set of 12.

Not Yet Reviewed

$21.16

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$143.83

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