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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 Dual Gear Drive Timing Sets
PRW Dual Gear timing sets eliminate the stretching and premature wear common with timing chains. These dual idler gear drives fit under most timing chain covers with little to no machining, and offer more stability than single gear drives. The steel alloy gears provide longevity, and are available in noisy or quiet versions for most applications. Replace your old-school timing chains with more reliable PRW Dual Gear timing sets. Order the set recommended for your specific vehicle and engine size. Features, items, and specs may include: * Easy to install * SAE 660 bronze thrust ring * Rugged gear drives offer high-precision timing * Axial needle and cage thrust bearings and/or silicon bronze bushings reduce friction * Offset bushings for easy cam indexing and timing changes (for most applications) * PRW extreme-pressure assembly lube and threadlocker
Not Yet Reviewed
$179.95
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$229.95
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
$488.61
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$580.58
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
( 6 )
$19.50
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$544.10
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 GM LS Series Fulcrum Upgrade Kits
PRW GM LS Series fulcrum upgrade kits are designed to improve your valvetrain performance by enhancing the rocke
Not Yet Reviewed
$138.68
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$190.02
PRW Sportsman Steel Full Roller Rocker Arms
PRW offers Sportsman steel full roller rocker arms for a variety of applications, including select Chevy and Ford engines from 1997 and up. Designed for those who demand the best in precision, strength, and efficiency, these cutting-edge rocker arms take your engine's performance to new heights. They feature direct oil feeding, nose roller axel (which is precision-machined for a tight-fit smooth motion), and E-coated rocker bodies. This all combines to deliver superior power, smoother operation, and unmatched durability under the most demanding conditions. Order the set recommended for your vehicle. Benefits/characteristics: * Rated up to 650 lbs. open spring pressure * Direct oil feed technology * 25 percent narrower roller reduces mass over the valve for additional RPM * 30 percent stronger than OEM body * Bolts included
Not Yet Reviewed
$383.77
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 )
$48.73
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$816.92
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
( 12 )
$25.00
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$417.65
PRW Billet Steel Main Caps
PRW billet steel main caps raise the bar in the high performance industry. The main caps are precision-machined from high strength steel, which offers both the proper balance of strength and flexibility to allow transfer of increased shock loads to the crank and bearings. These main caps stabilize the entire crankshaft rotating assembly in your high-performance engine by eliminating annoying cap walk, and reducing main bearing bore distortion. With a combination of top-quality performance components and reasonable pricing, we know that when you receive your new PRW billet steel main caps, you will have no trouble seeing what the excitement is all about!
( 3 )
$207.91
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$341.77
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 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 )
$542.77
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$679.93
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
$153.76
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$219.50
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 Stainless Steel Rocker Arms
PRW offers stainless steel rocker arms for a variety of applications, including many Chevrolet, Ford, American Motors, Oldsmobile, and Pontiac vehicles from the 1930s and up. They incorporate an exceptional design that provides plenty of clearance for large diameter springs. These rocker arms are manufactured from premium quality 17-4ph stainless steel, a superior alloy that is high in nickel and chromium. This rigid premium material provides high yield strength to help resist deflection and has extraordinary fatigue resistance. PRW stainless steel rocker arms feature full cage friction-reducing needle bearings and extra-large trunnions to spread out the load and reduce wear. The nose rollers and shafts are Cr40 steel, heat-treated and hardened to resist the severity of racing and to minimize scrubbing. Each rocker body is hand-polished, assembled, and carefully inspected to provide customers with some of the finest quality rocker arms available to the racing and performance industry. Available as a set with poly locks or sold individually. Product highlights: * Lightweight design * PRW poly locks included * CNC-machined pushrod cups * Heat-treated Cr40 steel rollers and shafts * Manufactured from 17-4ph stainless steel * Features full complement friction-reducing needle bearings * Wide assortment of ratios to suit almost any cam profile
Not Yet Reviewed
$326.14
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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$384.75
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.
( 1 )
$474.10
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
