Engine Kits & Rotating Assemblies Engines & Components

Summit Racing™ Re-Ring Kits

As your number-one source for high performance, it only seems right to offer you these re-ring kits. They feature Summit Racing™ brand components matched for optimal performance by our tech experts, so you can get the rebuild components that you need without taking the time to do all of the research. These convenient, affordable kits are designed to work with standard or oversize pistons and standard or undersize bearings.

3.85 out of 5 stars ( 41 )

$135.96

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$138.96

Federal Mogul Engine Re-Ring Kits

Federal Mogul engine re-ring kits can make your rebuild easy and inexpensive. If your present pistons are in good shape and you don't need cam bearings or an oil pump, then these kits are ideal. They include regular or moly rings, rod bearings, a gasket set, and main bearings. Some kits are also available without main bearings. Please verify all oversizes before ordering. Select the set recommended for your vehicle make and engine application.

4.52 out of 5 stars ( 92 )

$148.97

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$249.89

Enginetech Economy Engine Remain Kits

Enginetech offers economy engine remain kits for a variety of applications, including select Chevy and GMC engines from the 1960s, '70s, '80s, and '90s. These "re-ring" kits are a set of parts used to refresh an engine by replacing the most worn components while keeping the existing pistons if they're still in good condition. The partial rebuild kits include a piston ring set, bearing set (rod), bearing set (main), and full gasket set. Update your engine; select the kit recommended for your application.

Not Yet Reviewed

$121.99

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$169.99

Enginetech Premium Engine Remain Kits

Enginetech offers premium engine remain kits for a variety of applications, including select Chevy, GMC, Isuzu, Hummer, Dodge, and Ford engines from 1967 and up. These "re-ring" kits are a set of parts used to refresh an engine by replacing the most worn components while keeping the existing pistons if they're still in good condition. The partial rebuild kits include a piston ring set, bearing set (rod), bearing set (main), and full gasket set. Update your engine; select the premium remain kit recommended for your application

Not Yet Reviewed

$114.99

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$249.99

Namura Technologies Top-End Repair Kits

Top-end rebuilds can help to improve the performance of your ride, and Namura Technologies top-end repair kits will keep your ATV, UTV, or off-road motorcycle running in peak condition! They include everything you need: pistons, top-end gasket kit, and wrist pin bearings (where applicable) in one convenient, time-saving package. Namura kits are available for a wide variety of makes and models, with specific bore and compression ratio parts to service your specific vehicle. Choose to do your rebuild with repair kits from Namura Technologies—the people who make pistons with attitude!

5.0 out of 5 stars ( 2 )

$100.99

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$249.99

Hot Rods Complete Bottom End Rebuild Kits

When it's time to do a rebuild, Hot Rods complete bottom end rebuild kits are less expensive and longer lasting than OEM. These kits have all that you need to get back on track and are easy to put together. Each kit contains a crankshaft, main bearing/seals, and a complete gasket set. Water pump seals are not included. Great performance parts from Hot Rods will have you going, going, strong!

5.0 out of 5 stars ( 2 )

$236.47

Vertex Top-End Piston Kits

Vertex top-end piston kits are OEM-style replacements. These kits include everything needed to rebuild a top-end for the specific application selected. When applicable, the wrist pin bearing included is DLC-coated for added longevity. All piston skirts are coated with a high-tech molybdenum disulphide coating for faster break-in and increased piston life along with a T-5 hardening cycle. Rebuild your top-end without worries with Vertex top-end piston kits.

4.67 out of 5 stars ( 3 )

$113.36

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$247.46

SpeedFactory Racing YCP Vitara Piston and Ring Kits

SpeedFactory Racing YCP Vitara piston and ring kits are legendary, cost-effective engine rebuild packages designed for modifying Honda®/Acura® D-Series engines (like the D15 and D16) to handle extreme turbocharger boost and high horsepower. Order the kit recommended for your vehicle. Additional details: * What's in the kit: Each kit comes with four YCP-brand pistons, floating wrist pins, clips, and a complete set of piston rings. * What they do: These kits replace the weaker, stock factory pistons. A piston is a cylindrical engine part that moves up and down inside a cylinder to transfer the force of burning gas to the crankshaft. * Key Features: Made from AC8A-grade aluminum, the pistons are T-6 heat-treated (a baking process that makes metal much harder and stronger) and feature PTFE-coated skirts to reduce friction. * SpeedFactory Racing kits are a budget-friendly tuner favorite because they can safely support builds producing between 300 to 500 hp

Not Yet Reviewed

$159.99

Clearance

Quicksilver Outboard Motor Service Repair Kits

Quicksilver outboard motor service repair kits provide a convenient, all-in-one maintenance solution designed to help keep Mercury and select marine outboard engines operating at peak performance. These repair kits bundle essential maintenance items, such as filters, seals, spark plugs, and water pump components—tailored to specific horsepower ranges, fuel systems, and engine serial numbers. Engineered to meet or exceed original equipment specifications, Quicksilver service kits help simplify routine maintenance, reduce downtime, and help protect your investment by making scheduled servicing faster and more efficient. Whether for small portable outboards or high-horsepower four-stroke models, Quicksilver outboard motor service repair kits deliver the quality, reliability, and peace of mind trusted by boaters and marine technicians worldwide. Select the motor repair kit tailored to your marine engine type.

Not Yet Reviewed

$128.49

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$158.49

On Sale

Cylinder Works Power Valve Kits

If you have a broken power valve on your off-road machine, Cylinder Works power valve kits offer you quick and affordable access to OEM-quality replacements. Standard bore and a big bore version are available to provide long-lasting quality you can depend on. Regulate your exhaust port to reach optimal power and rev level ride after ride with Cylinder Works power valve kits.

1.0 out of 5 stars ( 1 )

$240.30

$216.27

Vertex Race Piston Kits

Vertex Race piston kits consist of piston, rings, wrist pin, and circlips. These pistons are made from the highest quality 2618 aluminum alloy and are perfectly suited to handle the rigors and high pressures of today's modern four-stroke engines. Plus, to aid in the break-in process and reduce wear, every Vertex piston utilizes a unique Molybdenum Disulphide (MOS2) coating on the piston skirt. What truly sets Vertex pistons apart from the competition are the unique piston profiles and compression ratios that are offered in A, B, C, and D sizes. This variation in sizing allows the piston to be perfectly sized to the cylinder for maximizing power and performance, while reducing blow-by and oil consumption. Order the piston kit designed to fit your application needs.

Not Yet Reviewed

$156.70

Vertex Replica Piston Kits

Quality you can see, power you can feel—Vertex Replica piston kits are choice replacements for precision performance. Available in 2- and 4-stroke, the Replica piston kits feature both cast and forged manufacturing processes, supplying the highest quality to meet your needs. And, Vertex offers A, B, C, and D sizes, so you can choose the proper fit for your cylinder. The difference in the sizes is 0.01mm (0.0004 in.) increments, with A being the smallest and D the biggest. Vertex Replica piston kit notes: * 2-stroke piston kits are gravity cast aluminum alloy with 18 percent silicone content, which produces an extremely light but very strong piston * 4-stroke pistons are forged from 2618 or 3032 alloys for superior strength and durability * All pistons are heat-treated with a T-5 hardening and tempering cycle * All piston skirts are treated with a high-tech molybdenum disulfide (MOS2) coating for faster break-in time and increased piston life * Standard pistons and rings are OEM replacements * Kits include piston, rings, wrist pin, and circlips

Not Yet Reviewed

$170.96

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$231.26

Sierra Marine Outboard Engine Maintenance Kits

Sierra Marine outboard engine maintenance kits can provide you with a comprehensive solution for maintaining the widely used Mercury Outboard engine models, ensuring optimal performance and reliability. These cost-efficient kits contain the essential components for routine maintenance at designated service intervals. Each kit is presented in a high-quality, full-color Sierra branded box with a vibrant label. The labels showcase product images, detailed information, and contents of the box. Additional details: * Essential parts for your Mercury engine at a fraction of the cost compared to buying them individually * High-quality spark plugs are pre-gapped and ready for installation * Water pump kits, thermostats, and fuel filters specifically engineered for each engine model * Aluminum anodes to prevent corrosion

Not Yet Reviewed

$236.99

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$248.99