Engines & Engine Parts

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...

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All Balls Racing Wheel and Carrier Bearing Seal Kits

All Balls Racing wheel and carrier bearing seal kits are hands-down the most complete line of bearing seal kits on the market! They are available in a wide variety of powersports applications, from ATV and off-road to street bikes. These All Balls Racing wheel and carrier bearing seal kits have premium high-speed bearings that feature low-drag, double-lip seals on both sides to provide superior exclusion of water and dirt and improved grease retention. High performance Chevron SRI-II grease features special rust inhibitors for the most demanding applications. Type TC nitrile elastomer wheel seals are specifically designed to keep out water and dirt. Their rubber coated outside diameter helps to create an optimum seal at the hub.

4.45 out of 5 stars ( 20 )

$66.93

Pro-X Racing Parts Wheel Bearings

Maintain your wheel centers with wheel bearings offered by Pro-X. Between riding and bike washing, wheel bearings take serious use and abuse. Pro-X wheel bearings are made to exact OEM specifications, to ensure maximum quality and performance. The Pro-X wheel bearings are offered as single or as set, and are a perfect match for your wheels, just the way you want it!

Not Yet Reviewed

$8.99

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$71.99

Vertex Complete Engine Rebuild Kits

Manufactured in Italy, Vertex pistons, both cast and forged, are the premier choice and highest quality aftermarket replacement and performance pistons for dirt bikes, ATVs, and UTVs. Vertex also leads the way in manufacturing high performance gaskets for dirt bikes, ATV, UTV, snowmobiles, and PWCs. Conveniently, Vertex offers a huge number of complete engine rebuild kits, each of which will save you time and money over trying to match up the correct components and buying them separately. Oversized pistons are available in some kits. Choose a kit designed for your powersports vehicle. Kits include: * Crankshaft * Piston kit * Complete engine gasket kit * Oil seal kit * Main bearing and seal kit * Water pump rebuild kit * Transmission bearing kit * Countershaft bushing/seal kit * Camshaft chain where applicable * Counter balancer bearing kit where applicable * Wrist pin bearing where applicable

5.0 out of 5 stars ( 1 )

$526.11

Wiseco Powersports Pro-Lite Piston Kits

Wiseco powersports piston kits include your rings, piston pin, and circlips. These 2-stroke kits feature Pro-Lite pistons that are CNC-machined for optimal cam shape and profile, horsepower, and service life. Wiseco has a decade of experience producing quality pistons for dirt bikes, ATVs, snowmobiles, outboard marine engines, and motorcycles. Their piston kits offer strong, lightweight pistons with optimized designs to improve engine efficiency and maximize your torque and throttle response. Plus, Wiseco powersports piston kits are produced right here in the USA. It's time to blaze your own trail with Wiseco powersports piston kits.

4.13 out of 5 stars ( 8 )

$120.99

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$152.99

Pro-X Racing Parts Piston Pin Bearings

Pro-X Racing Parts offers a complete line of piston pin bearings for the dirt bike, ATV, PWC, and 50cc/scooter segment. The pistons pin bearings are manufactured by the leading Japanese OEM factories, and all piston pin bearings are designed and developed to OEM specifications as direct-fit, cost-effective replacements. Choose the Pro-X piston pin bearings designed for your powersports machine.

Not Yet Reviewed

$13.99

Pro-X Racing Parts Ball Bearings

Pro-X Racing stocks a wide variety of OEM replacement ball and roller bearings. Whether you need crankshaft bearings, steering, swingarm, or wheel bearings, Pro-X has them all—top-quality brands like KOYO, NTN, SKF, HIC, MBS, and more. They will enable you to rebuild your specific assembly to reliable and like-new specification. The bearings are available in a variety of styles and sizes. Order the parts recommended for your powersports application.

Not Yet Reviewed

$10.99

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$71.99

All Balls Racing Countershaft Seal Kits

Performance and reliability start with All Balls Racing. Their countershaft seal kits package a case hardened bushing and a replacement outer seal with any O-rings, snap rings, or lock washers required for your application. Whether your off-road ride has two wheels or four, All Balls Racing has a countershaft seal kit for you.

Not Yet Reviewed

$26.04

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$29.85

Pro-X Racing Parts Piston Clips

Pro-X Racing Parts offer a wide range of clips for many piston diameters in different styles compatible with Pro-X or OEM pistons. Piston clips are not just a circled wire, they are much more, as they avoid the pin to move in the piston bosses. Do not underestimate the forces on the pin during operation. Pro-X piston circlips are top-quality, direct replacement circlips, exceeding OEM specifications and tolerances. Shop for Pro-X pistons, clutch plates, pistons and other powersport racing parts that will get you to the finish line faster. Order the Pro-X piston clips designed to fit your application needs.

Not Yet Reviewed

$2.99

Pro-X Racing Parts Thrust Washers

Pro-X Racing Parts offers crankshaft thrust washers for a wide range of powersports applications, including many Honda, Kawasaki, Yahama, Gas Gas, Husqvarna, KTM, and Suzuki models. These OEM-style replacement washers increase oil retention and reduce friction between rod, washer, and crank web. They're offered in copper or silver material, as well as a variety of widths, inside and outside diameters. Washers are an important engine component which should always be replaced when you re-press your crank. Order the model recommended for your ride.

Not Yet Reviewed

$7.99

Wiseco Crank Pin Bearings

These Wiseco crank pin bearings feature the latest caged needle roller bearing design for maximum durability. They are available for either the crank or rod end of the connecting rod. The bearings are manufactured from the highest quality hot rolled steel that's case-hardened to 58-62 RC to extend the life of the assembly. The Wiseco crank pin bearings' unique design provides the best possible performance and highest possible rpm.

Not Yet Reviewed

$26.99

Pro-X Racing Parts Countershaft Seal Kits

While changing the front sprocket on your off-road motorcycle, it's always recommended to inspect the countershaft oil seal that's right behind the sprocket. Positioned on the high loaded countershaft and always in contact with dirt and water, the oil seal can easily start leaking. Pro-X Racing has developed a wide range of countershaft seal kits—an easy and complete replacement, offering all the needed components. These upgrade kits also result in improved durability against the OEM parts. Order the seal kits designed for your application. Complete packages include: * Upgraded oil seal * Hardened steel bushing * O-rings, snap ring, or lock washer (where applicable)

Not Yet Reviewed

$17.99

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