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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
( 10 )
$797.25
PRW Main Cap Stud Kits
PRW main cap stud kits help eliminate main cap walk and also protect the threads in your engine block. The main cap studs work with the main caps to help strengthen the foundation for your next high horsepower build. These main cap fasteners come complete with hardened parallel-ground washers and quality hex-style nuts. Add confidence in the strength of your engine build when you use these PRW main cap stud kits.
( 6 )
$210.84
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$265.34
PRW Cylinder Head Stud Kits
PRW cylinder head stud kits offer heavy-duty fasteners, along with 12-point nuts and washers for Ford Powerstroke engines. These replacement studs are machined from 4135 chromoly steel and finished with a black oxide. They provide superior clamping power, compared to the stock bolts—which will solve the problem of head gasket failure caused by increased cylinder pressure.
( 1 )
$244.95
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$447.16
PRW Harmonic Damper Bolts
PRW harmonic damper bolts help hold your balancer properly locked in place as they absorb the massive energy from crankshaft flexing. Professionally designed to withstand 180,000 psi fastener yield strength, they also include a wide-area 1/4 in. thick washer to further spread the fastening load. For installation ease, these bolts feature a deep-socket, 12-point head-style so your torque wrench stays fully engaged up to spec. Show your knuckles some mercy--complete your install with PRW harmonic damper bolts. Order the bolt recommended for your specific vehicle and engine size.
( 10 )
$20.04
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$33.50
PRW Water Pump Pulleys
PRW offers several water pump pulleys to work with PRW, as well as other water pump brands. Their selection is CNC-machined from billet aluminum or steel and is available in several finish options, adding not only performance but style to your cooling system.
( 1 )
$127.09
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$134.24
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
Not Yet Reviewed
$531.54
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!
( 7 )
$138.68
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$190.02
PRW Main Cap Side Bolts
PRW Main Cap Side Bolts uses premium grade Custom 4135 Steel rated at "aircraft" quality. Their side bolts are then specially heat-treated to 180,000 psi. This heat-treating procedure allows for total heat penetration which results in a stronger, more superior stud compared to lesser quality studs from other manufacturers. PRW main cap side bolts are then centerless ground after being heat treated and then thread rolled which assures better fatigue strength than having this process done before heat treatment. This manufacturing process may cost more to do but the results are well worth the extra effort.
Not Yet Reviewed
$25.98
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.
( 1 )
$679.93
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
( 32 )
$383.77
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
$173.37
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$178.37
PRW Billet Steel Timing Sets
PRW offers billet steel timing sets for a variety of engine applications—including small block, big block, LS, Cleveland, Hemi, and others. They're available in single- or double-roller timing chain styles; with cam gear, crank gear, and thrust bearings also included. Order the set recommended for your vehicle.
Not Yet Reviewed
$196.44
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$219.50
PRW Crankshaft Adapters
Fit an early design (non-LS) automatic transmission to your Gen III/IV engine with PRW crankshaft adapters. The are machined from steel and given a black surface finish.
Not Yet Reviewed
$46.08
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
PRW Water Pump Flange Bolts
PRW's pulley girdle strengthens the water pump pulley for supercharger applications, and PRW offers the right flange bolts to brace the pulley properly. Included in the girdle kits, they are also conveniently offered as replacements, providing the correct fit and reliable performance, matching that of the originals. Service your PRW water pump pulley girdle with PRW flange bolts.
Not Yet Reviewed
$8.38
PRW Fabricated Valve Covers
PRW fabricated valve covers give your engine an edge and awesome looks. Attention vintage racers, competition junkies, and machining enthusiasts trying to save weight, PRW covers are fabricated from 6061 T-6 aluminum alloy, and have successfully endured rigorous individual pressure testing, proving that they are built to last. Their incredible ability to withstand the harsh elements of racing makes them the perfect solutions for street rod and racing applications. PRW fabricated valve covers are offered in different mounting styles, heights, finishes. They all feature thicker rails and better materials to assure long-lasting durability, and they include fasteners for a no-hassle install.
( 16 )
$298.23
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$304.19
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
$3.05
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$115.38
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
Not Yet Reviewed
$4.04
PRW Timing Covers
PRW timing covers are built to the highest quality standards to ensure an excellent fit and leak-free seal. They're available in various materials, finishes, and configurations for fitment on specific make/model and engine applications. Choose the timing covers designed to fit your application.
( 1 )
$489.94
PRW LS Series Fulcrums
PRW LS Series fulcrums are performance upgrade kits for GM LS engine rocker arms. They replace the stock rocker fulcrum with a stronger trunnion assembly—often featuring drawn cup bearings or silicone bronze bushings instead of the factory needle bearings—to enhance durability and handle higher lift cams and RPMs. These kits are designed to upgrade the stock LS rocker arms to make them more robust for performance applications. Key features: * The primary purpose is to improve the strength and durability of factory LS rocker arms, not to replace them entirely * Kits typically include replacement fulcrums (trunnions), circlips, and fasteners for the 16 rocker arms in a V8 engine * Kits often replace the stock's "uncaptured" needle bearings with more robust drawn cup bearings or oil-lubricated silicone bronze bushings, which are less prone to failure and collapsing * This upgrade makes the valvetrain more reliable under the stress of performance modifications like high-lift camshafts and stiffer valve springs * They provide a significant strength upgrade without the cost of purchasing a full set of high-end aftermarket rocker arms
Not Yet Reviewed
$3.97
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.
( 7 )
$7.33
PRW Rocker Arm Shaft Support Kits
Secure your rocker arm shafts with PRW rocker arm shaft support kits. These kits consist of hardened steel hold-down clamps, along with shank, fasteners, spacer, and shims to properly hold your rocker arm shafts in place. They're for use for aluminum and stainless steel rocker arms. Order the kit recommended for your specific vehicle and engine size.
Not Yet Reviewed
$119.75
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$120.08
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.
( 1 )
$63.86
PRW LS Fulcrum Installation Tool Washers
PRW offers replacement washers for its LS fulcrum installation tool, which is used to help install or upgrade rocker arms on GM LS series engines. The durable rubber thrust washers protect the rocker arm during the installation process. Sold in pairs.
Not Yet Reviewed
$9.91
