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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March Performance Ford V-Belt Pulley Kits

By using March Performance Ford V-belt pulley kits, you can gain approximately 12 to 15 hp or increase cooling in your engine. These kits are available with Performance Series or high water flow-style pulleys. Performance Series pulley kits—designed for normal street driving—reduce accessory drag, which typically creates 12.5 to 15 hp at the rear wheels. The pulleys are made from CNC-machined 6061 T-6 billet aluminum and finished with a clear powdercoat. Another option, the high water flow ratio pulleys improve cooling by increasing water flow and fan speed. This helps at critical low-speed driving, where most overheating occurs. Order the kit tailored for your engine application.

4.67 out of 5 stars ( 51 )

$252.99

COMP Cams Ultra Pro Magnum Rocker Arms

Utilizing years of valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (dyno and Spintron), COMP Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that Ultra Pro Magnum rocker arms not only lived up to the lofty standards of their predecessor, but also took stud mount rocker performance, stability, and value to a whole new level. The most noticeable advancement centers around their nearly unbreakable investment cast 8650 chromoly body. The arched, web-like design delivers a nearly 29 percent increase in strength and rigidity, while reducing the moment of inertia and optimizing the dynamic balance. The resulting rockers maximize lift and valvetrain control at high rpm. The increased retainer and valve spring clearances of the new design enable the use of large-diameter valve springs, retainers, and locks, without clearance or fitment issues. The new black oxide exterior finish offers a distinctive appearance, along with long-term corrosion resistance. The COMP Cams Ultra Pro Magnum rocker arms feature an oversized trunnion and precision-sorted needle bearings designed for use with high-load valve springs. These unique rockers also feature hardened roller tips for reduced friction and elimination of the valve stem "side loading" that causes premature valve guide wear.

4.75 out of 5 stars ( 209 )

$45.95

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$467.95

D.S.S. FX-Series Forged 4032 Alloy Pistons

Pushing the envelope on your engine combination? Need parts that will stand up to the demands of today's power levels? D.S.S. FX-Series forged 4032 alloy pistons increase your horsepower potential without busting the budget. Forged and machined with premium aircraft quality 4032 alloy, these pistons are a great choice for naturally aspirated, nitrous or boosted engines with the added strength from the internal gussets. Additional CNC milling removes material in non-critical areas to achieve a lighter weight for the perfect balance of strength, power, and longevity. D.S.S. FX-Series pistons feature a patented X-Groove skirt design, which reduces damage caused by fuel wash down and break-in debris for superior skirt, cylinder, and ring life. For stroker engines, the advanced skirt design improves piston stability and ring seal which provides quieter operation. Select the pistons for your application needs. Features include: * Forced pin oiling * Drilled bottom land intersecting oil groove drain backs * Pin lock ring removal slot * Precision honed piston pin bores * High strength piston wrist pins * Deep CNC valve reliefs

5.0 out of 5 stars ( 9 )

$619.95

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$689.95

Wiseco Powersports Piston Kits

Wiseco powersports piston kits include your rings, piston pin, and circlips. Wiseco has a decade of experience producing quality pistons for dirt bikes, ATVs, snowmobiles, outboard marine engines, and motorcycles. Their piston kits provide strong, lightweight pistons with optimized designs that 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 )

$380.99

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