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Dirt Bike Engine

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Wiseco
Pro Lite Piston Kit
$87.95 - $240.95
$78.99 - $214.99
You save up to $25.96 (11%)
(12)
Wiseco Pro Lite Piston Kit Available for both two stroke and four stroke bikes, the Wiseco Pro Lite Piston Kit is both a great OEM alternative and an easy way to boost the power. Choose stock bore siz
Wiseco
Complete Bottom End Rebuild Kit
$219.95 - $609.95
$195.99 - $543.99
You save up to $65.96 (11%)
(11)
Wiseco Complete Bottom End Rebuild Kit Each kit contains everything you need to complete your rebuild the right way, the first time- crankshaft and connecting rod, all applicable bearings, and complet
Wiseco
Top End Kit
$110.39 - $334.79
$98.99 - $297.99
You save up to $36.80 (11%)
(17)
Wiseco Top End Kit Wiseco-forged high-silicon aluminum alloy pistons are computer-machined to exacting tolerances Designed for greater strength with reduced weight and improved heat transfer Piston k
Moose Racing Top End Gasket Kit Performance sets designed for a piston replacement Top-end gasket sets include high-performance head, base, intake and exhaust gaskets Cost-effective way to raise c
Hot Rods
Complete Bottom End Rebuild Kit
$229.95 - $689.95
$218.99 - $655.99
You save up to $33.96 (5%)
(2)
Hot Rods Complete Bottom End Rebuild Kit Hot Rods Bottom End kits include everything needed to complete crankshaft installation Hot Rods Bottom Ends kits offer you the choice between Hot Rods Heavy D
Wiseco
4C Race Series Piston Kit
$281.99
$250.99
You save $31.00 (11%)
(0)
Wiseco 4C Race Series Piston Kit Whether you are a serious racer or just serious about how your engine preforms a Wiseco 4C Race Series Piston Kit will get you the power and snap you want. Fo
Namura Technologies Top End Repair Kit Namura Technologies piston kits are direct replacements for OEM piston with no modifications or dimensional adjustments needed. Combine this with the MOS2 coatin
Athena
Complete Gasket Kit
$11.95 - $322.95
(3)
Athena Complete Gasket Kit Manufactured in "State-of-the-Art" computer controlled facilities All gaskets made from the highest quality materials All gasket sets meet or exceed OEM specifications The
Hot Cams
Valve Shim Kit
$59.95 - $89.95
(4)
Hot Cams Valve Shim Kit Sick of taking your bike to an expensive mechanic to have them shim your valves just because you don't have the correct shims to do it yourself? Here is the answer, Hot Cams
Wiseco
Cam Chain
$47.95 - $84.95
$42.99 - $75.99
You save up to $8.96 (11%)
(0)
Wiseco Cam Chain Made from premium materials to reduce friction and increase service life “M” style chain gives you maximum strength and durability Wiseco’s in-house
Wiseco
Cam Shaft
$210.95 - $269.95
$187.99 - $241.99
You save up to $27.96 (10%)
(0)
Wiseco Cam Shaft When you're looking for the next level in engine performance look no further. With a new Wiseco Cam Shaft you will not only get more power but you will get the added peace of
Moose Racing Complete Gasket Set All gaskets needed for engine rebuild are included in each set with the exception of oil seals Unmatched reliability and performance from high-tech materials Design
BikeMaster
Magnetic Steel Oil Drain Plug
$10.35
$9.99
You save $0.36 (3%)
(9)
BikeMaster Magnetic Steel Oil Drain Plug It's hard to believe that a little bolt with a magnet can improve the performance and lifespan of your motorcycle. BikeMaster's Magnetic Oil Drain plug will
Hot Cams
Stage 2 Cam
$179.95 - $269.95
(0)
Hot Cams Stage 2 Cam Extract maximum performance from your engine Hot Cams provide increased intake and exhaust duration for improved breathability and more horsepower Provides significantly more mid
Moose Racing
Cast Piston
$51.95 - $196.95
(0)
Moose Racing Cast PistonGravity cast aluminum alloy with 18% silicon to increase resistance to wear and decrease thermal distortion, thus providing a longer piston life Coated skirts ease break-in, d
Maxima
ProFilter Oil Filter Cover
$29.95
$26.99
You save $2.96 (10%)
(6)
Maxima ProFilter Oil Filter Cover Features: Made from CNC-machined 6061 T-6 billit aluminum Includes a sub-suface anodized finish Lighweight and durable Increased flow Prec
Wiseco
Connecting Rod
$73.95 - $129.95
$65.99 - $115.99
You save up to $13.96 (11%)
(6)
Wiseco Connecting Rod Double forged, connecting rods maintain superior dimensional consistency through improved grain flow. Shot peening eliminates residual stresses and smoothly blends the rod forg
Wiseco
Titanium Engine Valves
$125.95 - $146.95
$112.99 - $130.99
You save up to $15.96 (11%)
(0)
Wiseco Titanium Engine Valves Titanium valves are stronger and more reliable then OEM because they are forged as one unit rather than pieced together like stock valves Forged one piece valves for u
Moose Racing Countershaft Seal Kit Kit includes hardened steel bushing, an upgraded seal, an O-ring (where applicable) and a snap ring or lock washer (where applicable) Made in the U.S.A.
Hot Rods
Connecting Rod
$99.95 - $159.95
$94.99 - $152.99
You save up to $6.96 (4%)
(0)
Hot Rods Connecting Rod Affordable premium quality replacement connecting rods Forged from 8620 AISI steel, hardness tested to insure strength and durability AISI carburized crankpi

Latest Reviews

Patrick (Baton Rouge, LA)

Fit
Quality
Installation
Recommend

review

Huge glob of epoxy hanging around tip of magnet. Ordered it for a specific model and it does not fit. It is an M10. Should be an M8. Would use it even if it did fit. Worried about epoxy breaking off and churning around in motor.

Sean (Los Angeles, CA)

Fit
Quality
Installation
Recommend

Replaced the top end on my 96 cr125r! Fit great perform well but the price is the problem. For 70-80 bucks they'd be perfect!

Mike (Concord, NC)

Fit
Quality
Installation
Recommend

Hammerhead Engine Plugs

These fit perfect, and look great on the bike!! They do not come with O rings so you will have to use your oem ones or buy new ones but they are only a couple bucks- definitely worth the money.

Cooper (Russellville, IN)

Fit
Quality
Installation
Recommend

Wiseco piston

I put it all together very easily, but it blew up in less than 24 hours of installation!

J (LI, NY)

Fit
Quality
Installation
Recommend

125cc kit

I had this athena kit on my 2003 yz125 and the bike ripped. Probably was the fastest 125 Ive owned and it ran stock exhaust only other engine mod was vforce reed. I called it the blue demon :p

simon (berkshire, BRK)

Fit
Quality
Installation
Recommend

lully job

Ordered my wiseco bottom end kit and everything fell together. Fired up second kick, now first time everytime! I will run it very gently, because that is absolute key in a good engine as some do thrash and wonder why the cranks snapped or flattened bearings!!

Keep your power plant performing at its peak with dirt bike engine parts at Motorcycle Superstore. To ride to the front of the pack with, or charge those nasty up-hills, you’ll need a powerful motor between your legs. Motorcycle Superstore has everything you need to get the most out of your machine, from pistons, clutches, piston rings, valves, cylinder heads, gaskets and more. We carry all the top performing brands to ensure you’re getting the ponies you want. Is it time to replace a piston, rings or clutch? We have a massive selection of engine parts for you to replace those worn parts. Proper maintenance is key to getting a motor to last long, and with Motorcycle Superstore’s lowest prices, you can change filters, oil, pistons, rings and more without breaking the bank. Make sure you get the right dirt bike engine parts with our bike parts finder. Also, use our options filters to sort our inventory by price, brand and style. Stay roosting and shredding the dirt with dirt bike engine parts from Motorcycle Superstore
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