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    Dirt Bike Engine

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    Wiseco
    Top End Kit
    $110.39 - $334.79
    $82.79 - $251.09
    You save up to $83.70 (25%)
    (20)
    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
    Wiseco
    Pro Lite Piston Kit
    $88.19 - $240.95
    $64.00 - $194.99
    You save up to $55.74 (25%)
    (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
    $224.95 - $614.95
    $168.71 - $461.21
    You save up to $153.74 (25%)
    (12)
    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
    Hot Rods
    Complete Bottom End Rebuild Kit
    $229.95 - $689.95
    $195.46 - $586.46
    You save up to $103.49 (15%)
    (5)
    Hot Rods Complete Bottom End Rebuild Kit A life saver when things go south for your engine, the Hot Rods Complete Bottom End Rebuild Kit features all the parts you need to get back on the track. Addit
    Hot Cams
    Valve Shim Kit
    $59.95 - $89.95
    $47.96 - $71.96
    You save up to $17.99 (20%)
    (5)
    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
    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
    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
    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
    Wrench Rabbit
    Complete Rebuild Kit In A Box
    $359.95 - $899.95
    $341.99 - $854.99
    You save up to $44.96 (5%)
    (0)
    Wrench Rabbit Complete Rebuild Kit In A Box Wrench Rabbit isn't lying, this kit does come in a box and contains everything you need to get your dirt bike running again. Two stroke or four stroke, this
    MSR
    Flywheel Weight
    $119.95 - $129.95
    (2)
    MSR Racing Flywheel WeightPrecision machined from billet steel Bolt-on installation, no drilling or tapping required Ignition cover spacer included when needed Smoother power Reduces stalling Manufact
    Cylinder Works
    Cylinder Kit
    $559.95 - $639.95
    $399.00 - $559.95
    You save up to $107.96 (17%)
    (0)
    Cylinder Works Cylinder Kit Replace that tired, worn out, or blown up engine with a new Cylinder Works Cylinder Kit. Each kit contains all the necessary parts to get your ATV or Dirt Bike back on th
    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
    TMV
    Flywheel Weight
    $109.95 - $149.95
    $89.00 - $149.95
    (1)
    TMV Flywheel Weight Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller space No extra gaskets or leaking plastic spacers
    Moose Racing Replacement Cylinder Replace your damaged or worn out OEM cylinder Made from cast aluminum, nickel silicon carbide plated Precision machined and honed to OEM stock bore sizes Extremely d
    Kibblewhite Preci...
    Black Diamond Valves
    $33.95 - $40.99
    $31.99 - $40.99
    (1)
    Kibblewhite Precision Machining Black Diamond Valves When rebuilding your engine you can trust that Kibblewhite Precision Machining Black Diamond Valves are unmatched in performance and durability. M
    BikeMaster
    Magnetic Steel Oil Drain Plug
    $10.35
    $8.28
    You save $2.07 (20%)
    (10)
    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
    All Balls
    Crankshaft Bearing and Seal Kit
    $23.95 - $76.95
    $21.99 - $69.99
    You save up to $6.96 (10%)
    (4)
    All Balls Crankshaft Bearing and Seal Kit Kits feature Koyo and Nachi precision Japanese crank bearings Crankshaft seals feature a carbon/fluorocarbon pad on the seal lip and stainless
    Hot Rods
    Connecting Rod
    $99.95 - $159.95
    $84.96 - $135.96
    You save up to $23.99 (15%)
    (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
    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
    Wiseco
    4C Race Series Piston Kit
    $281.99
    $173.99 - $211.49
    You save up to $70.50 (25%)
    (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
    Wiseco
    Replacement Ring Set
    $17.29 - $37.89
    $12.96 - $29.99
    You save up to $9.48 (25%)
    (2)
    Wiseco Replacement Ring Set Wiseco offers a complete range of popular piston models and years for both trail and racing applications Durability, longevity and increased horsepower Each ring set is
    Pro X Racing Parts
    Steel Valve Conversion Kit
    $126.95 - $192.95
    $104.99 - $192.95
    (0)
    Pro X Racing Parts Steel Valve Conversion Kit Latest addition to the ProX program is the Steel Intake and Exhaust Valve & Spring Kits. This kit is offered as an alternative where the OEM application u
    Wiseco
    Cam Chain
    $51.95 - $86.95
    $38.96 - $75.99
    You save up to $21.74 (25%)
    (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
    Stainless Steel Engine Valves
    $12.95 - $68.95
    $9.71 - $51.71
    You save up to $17.24 (25%)
    (1)
    Wiseco Stainless Steel Engine Valves Stainless steel valves are manufactured to exacting tolerances from the highest grade material Forged one piece valves for unmatched strength CVD/CNI coated t

    Latest Reviews

    grayson (edmonton, AB)

    Fit
    Quality
    Installation
    Recommend

    works fine

    Went in okay. One of the top o-rings was a pain in the ass, but it seemed to work out in the end. It recomended drilling a hole, but my old piston didn't have one, so I didn't feel like drilling my brand new piston.

    Bryan (Hayden , CO)

    Fit
    Quality
    Installation
    Recommend

    its f****d

    Had my brand new Wiseco top and bottom end put in about a month ago in my 2002 Honda CR250r. Less than 10 hours and changing my fluids twice bottom end seized yet again. Biggest piece of crap I've spent my money on, wouldn't recommend AT ALL.

    randy j. (sand lake, MI)

    Fit
    Quality
    Installation
    Recommend

    flywheel weight

    Works great- just right for the YZ250 for woods riding.

    Curtis (Chesapeake, VA)

    Fit
    Quality
    Installation
    Recommend

    Top end bearing

    Good OEM substitute. Used one on my last top end without issue.

    Curtis (Chesapeake , VA)

    Fit
    Quality
    Installation
    Recommend

    Gasket kit

    Good quality gasket set. Had everything I needed including multiple thickness base gaskets to properly set head space. Would buy again.

    Jim (Sheboygan, WI)

    Fit
    Quality
    Installation
    Recommend

    Shim Kit

    Glad I bought the kit, better than buying individual shims at the Honda shop. Fair price, quick delivery.

    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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