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Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched...
Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your...
Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your daily driver.
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These Trick Flow® replacement valve seats are just like the originals. Made from premium materials and built to exacting tolerances, they replace your existing worn or damaged valve seats.
( 6 )
$10.99
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$70.99
AFR valve seat inserts are the perfect replacements for existing worn or damaged components in your high performance vehicle. They are made of premium-quality materials and built to exacting tolerances to offer an exceptional fit to prevent valve leaks.
( 1 )
$13.65
Kibblewhite precision valve seats are just that--precision! No matter what your powersport is--ATV/UTV, motorcycles, or PWC/snowmobile--the quality of American-crafted Kibblewhite valve seats will perform flawlessly! Their passion for cycles has created products with exceptional wear qualities, excellent thermal qualities, and resistance to micro-welding, corrosion, and burning. These valve seats are manufactured with ample material and the outer diameters are ground smooth for maximum contact and optimum heat transfer, with a generous radius on the leading edge to prevent galling. Choose either their powdered metal precision valve seats that are compatible with all types of fuel blends, or their proprietary bronze alloy seats specifically designed for use with titanium valves in high performance applications. There's only one place to go for your powersports performance valvetrain needs--Kibblewhite Precision Machining.
( 5 )
$7.78
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$64.80
If the valve seat inserts on your high performance vehicle are worn or cracked, replace them! Dart premium-quality replacement valve seat inserts are made to exacting tolerances. They offer a good, tight seal to avoid those pesky valve leaks that can affect engine performance.
( 1 )
$6.79
If you're rebuilding your cylinder heads, Edelbrock replacement valve seats will help you complete your job. Valve seats are critical components in the life and performance of your valves. Edelbrock valve seats are crafted from strong ductile iron for exhaust and intake locations. When you need to service your heads, choose these Edelbrock replacement valve seats.
( 3 )
$19.95
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$81.95
Dura-Bond 30000 Series valve seat inserts are the most machinable of the Dura-Bond valve seat materials. The sintered valve seat insert offers a blend of finely dispersed tungsten carbide, residing in a matrix of tempered tool steel and special alloy iron particles. The superior machinability is the result of adding proprietary ingredients and solid dry lubricants to this blend—and by using a special processing technique during manufacturing. As a result, these are much easier on cutting tools and won't have the typical chunks of carbide. Go with the easy-to-cut, yet extremely strong Dura-Bond 30000 Series valve seat inserts for your next engine rebuild.
( 2 )
$7.99
Many of the late model blocks have taller lifter bores, which means standard seat height lifters with an offset require manual notching of the lifter bore for pushrod clearance. Crower developed a lifter with a +.300 in. higher pushrod seat to solve this problem. Crower Dart block raised seat roller lifters are taller to clear lifter bore and have lightweight billet alloy bodies paired with a robust stainless steel alignment blade. They feature High-Pressure Pin Oiling (HIPPO), allowing more oil to be delivered to critical high-load areas for greatly improved cycle life.
( 1 )
$1,090.99
Upgrading your camshaft? Get maximum performance with matching valve springs. Edelbrock's Sure Seat valve springs are made of the highest quality spring wire and are precision-wound to exact specifications. They are designed for use on OEM heads when used in conjunction with their Performer-Plus, Performer RPM, and Torker-Plus camshafts. They'll work with the stock rotators (if applicable) and fit the spring pockets perfectly.
( 42 )
$56.95
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$208.95
PAC Racing valve spring seats and cups are a great way to prevent dancing springs, which would tear up your aluminum heads. High performance racing engines place extreme pressure on the springs. These retainers are essential for use on aluminum heads. They fit the inside or outside diameter of the springs, preventing spring seat movement.
( 8 )
$5.73
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$88.02
AFR designed these valve spring seats to protect your aluminum head from the harder valve springs. When a valve spring is free to move slightly on an aluminum head, it will quickly wear and damage the cylinder head itself. These valve spring seats have been developed to prevent this type of damage from occurring. The spring seats are installed over the valve guide and have a tapered shape that prevents the spring from being able to move excessively in any direction. Cylinder heads can be a big investment, so protect them from damage with these AFR valve spring seats.
Not Yet Reviewed
$5.25
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$82.95
Edelbrock spring seat cup kits provide a hardened barrier between the valve springs and heads, positively locating the base of the spring to prevent unwanted spring movement.
( 4 )
$47.95
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$113.95
Edelbrock Sure Seat valve spring kits are made of the highest quality spring wire and precision wound to close tolerances, these springs are ideal when installing Edelbrock Performer-Plus camshafts. The valve springs are machined for use with OEM valve rotators. For camshaft warranty compliance, use only the springs recommended by Edelbrock for each camshaft application. Kits contain non-rotator valve springs, retainers, and matching 7 degree valve stem locks. They're available in single or dual options, in a variety of diameters and heights.
( 6 )
$155.95
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$266.95
Summit Racing™ link bar hydraulic lifters are drop-in retrofit lifters designed to allow conversion to street hydraulic roller camshafts. These lifter bodies are machined from cold formed steel with clipped axles. They feature .700 in. diameter wheels and are designed for street use up to 6,500 rpm.
( 17 )
$620.99
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$668.99
These High Energy hydraulic lifters from COMP Cams feature a patented, constant orifice-metering valve that precisely meters oil to the rocker arms. Continuous contact between the metering valve and the precisely coined bottom surface of the pushrod seat is maintained throughout the engine's rpm range, eliminating excessive oiling at high speeds. The pushrod seat is made of a special powdered metal iron alloy, heat-treated for strength and wear resistance. The longer piston is produced with through-hardened steel that provides more bearing surface and increased lifter longevity. These lifters have a lightweight check valve disk that allows for quicker response, resulting in increased engine speed before valve float.
( 153 )
$14.95
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$215.95
COMP Cams Evolution Series hydraulic roller lifters with Hydraulic Cartridge Technology (HCT) are revolutionary patented tappets. A combination of a self-contained hydraulic cartridge within a thick-wall lifter body and accompanying reduced oil volume that is less effected by oil aeration delivers the most consistent bleed rates between each lifter on the market. The smaller volume within the hydraulic cartridge creates one of the most responsive and quietest lifters on the market today. Startup noise is greatly reduced, and a precision-controlled bleed down rate ensures excellent performance at high RPM. The cartridge design also allows for an incredibly stiff lifter body, greatly reducing body distortion and further ensuring consistent hydraulic performance. The patented HCT tappets are a completely new design that was developed specifically by COMP Cams to meet the demanding performance and durability required for modern street and performance street engines. The HCT and proprietary manufacturing processes of these lifters ensure precision and longevity that exceed any lifter on the market. Other features include increased duration and lift to the camshaft and two oiling features. Another industry first is the fact that the hydraulic element of this patented lifter is serviceable, allowing anyone to rebuild lifters in his or her own garage. Order the Evolution lifters recommended for your year/make and engine application.
( 12 )
$40.95
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$726.95
Summit Racing™ precision cast cylinder heads are made from tough A-356 aluminum alloy and feature Permanent Mold "As-Cast" technology. Port accuracy is unrivaled--meaning CNC porting is not required to provide superior flow. The result is CNC-ported performance at a fraction of the price! We start with precision CNC-finished faces and bolt holes for accuracy and fitment. American craftsmen expertly size and install the manganese bronze valve guides and interlocking ductile iron seats before finishing with a competition-grade valve job. From there, the decks are given a final pass for superior finish. They are finish-assembled in the USA with top-quality components like PAC Racing springs, fasteners, one-piece 21 4N stainless valves, machined locks, Viton® seals and chromoly steel retainers. The final result is the performance you want and Summit Racing™ quality you TRUST!
( 13 )
$624.99
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$1,999.99
COMP Cams Xtreme Energy DLC hydraulic flat tappet lifters are quality yet inexpensive performance-proven lifters available in hydraulic and solid for multiple applications. These tappets feature a Diamond-Like Coating (DLC) face that forms an extremely hard, tough, and high-lubricity surface to reduce friction at the cam lobe/lifter interface, extending lifter and camshaft life significantly. The lifters maintain the excellent performance expected of a COMP product and are available for Chevrolet, Buick, Cadillac, Pontiac, Oldsmobile, Ford, Chrysler, and AMC applications requiring flat tappets. Additional details: * DLC: Diamond-Like Carbon * Wear-resistant * High lubricity * Cast-iron and steel camshaft compatible * Outstanding performance in Spintron durability testing simulation of an entire racing season * Excellent alternative to hard-to-find standard lifters
( 2 )
$7.95
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$108.95
Trick Flow® Double platinum .660 LS dual valve spring and retainer kits are designed to provide maximum performance and reliability for your LS-based build. All components are made from a proprietary blend of alloys and tested under rigorous conditions to ensure that they perform and last at the highest levels. These racing valve springs are made with cutting-edge material and processing advancements. The retainers are available in titanium or chromoly steel and are precision machined to reduce unnecessary weight. The kits are designed for drop-in installation into any standard LS-style heads with no machining and include all necessary components and work with most hydraulic roller valvetrains. Whether you use them in your street or race machine, Trick Flow® Double platinum .660 LS dual valve spring are built to perform and will help get the most out of your LSX.
( 12 )
$353.99
Howards Cams Maximum Effort retrofit hydraulic roller lifters are true high performance street lifters designed primarily for ease of maintenance and reliability. The lifters are CNC-machined and then fitted with precision check ball internal valving to prevent lifter "pump up." These features combine to provide a broader power band and increased rpm potential, while still offering the low maintenance of a hydraulic cam.
( 26 )
$699.99
Howards Cams OE-style performance hydraulic roller lifters are stock replacements for use in factory hydraulic roller blocks. These lifters offer the best combination for the street with reduced friction and increased torque and horsepower. They're available in various outside diameters for fitment on specific vehicle applications. Order them individually or as a set.
( 5 )
$229.99
On Sale
AFR's 335cc BBC Enforcer cylinder heads feature their Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners, and combustion chambers that allow for extremely accurate and repeatable port location/performance. These budget-friendly heads are perfect for your 509 to 540 cu.in. operating below 6,500 rpm. They come fully assembled with the identical components found in AFR's higher end CNC-ported cylinder heads—such as ARP rockers studs, PAC Racing springs, Viton® valve seals, AFR adjustable guide plates, machined bead valve locks (not stamped), hardened spring seats, and AFR's one-piece 8mm 21 4N stainless steel valves. Order the cylinder heads recommended for your year/make and engine application.
( 5 )
$1,023.75
$664.65
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$921.38
You can rely on Howards Cams RaceMax lifters. These vertical bar mechanical roller lifters feature heat-treated 8620 steel billet bodies that are CNC-machined in one process to assure accuracy of all part features. RaceMax lifters are precision ground for proper fit in OE and +.300 in. tall aftermarket lifter bores. They're outfitted with an increased oil ban diameter for maximum rigidity, as well as heat-treated tool steel nitrided axles, and precision fitted roller bearings. The pressure-fed axle oiling insures longevity and best defense against premature failure. Trust your race car performance to Howards Cams RaceMax vertical bar mechanical roller lifters.
( 4 )
$719.99
Summit Racing™ mechanical roller lifters are available in two styles: Street Performance and Sportsman style. The Street Performance lifters have pressure-fed pin oiling and are for applications that see extended idle time. They use a cold formed body and a .700 in. wheel diameter. The Sportsman lifters are built for more abuse with a billet steel body and feature .750 in. wheels. They are not designed for extended periods of idling or low speed operation.
Not Yet Reviewed
$558.99
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$656.99
Howards Cams direct lube hydraulic flat tappet lifters use a precision minor flat ground on the side of lifter body to supply oil to the cam lobe/lifter interface. This allows for a constant oil supply to the cam lobe, resulting in higher valve spring pressures, more aggressive profiles, and reduced lobe wear.
( 8 )
$261.99
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