Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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MOOSE RACING Complete Gasket Set - Suzuki 808590
MOOSE RACING
$109.72A complete gasket set is essential for maintaining proper engine sealing and preventing fluid leaks across critical engine surfaces. Whether you're rebuilding after a top-end refresh or performing...09346949- SKU:
- 09346949
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
$109.72 -
MOOSE RACING Complete Gasket Set - Suzuki 808592
MOOSE RACING
$93.43A complete gasket set is the foundation of engine reliability—sealing critical surfaces to prevent oil leaks, coolant loss, and combustion gas escape that compromise performance and longevity...09346950- SKU:
- 09346950
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET SET
$93.43 -
MOOSE RACING Complete Gasket Set - Suzuki 808983
MOOSE RACING
$146.11A complete gasket set is essential insurance against catastrophic engine failure—worn or compromised gaskets lead to oil leaks, coolant seepage, and combustion blow-by that compromise performance and...09346951- SKU:
- 09346951
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$146.11 -
MOOSE RACING Gasket Set with Seals - Suzuki/Kawasaki 811531
MOOSE RACING
$88.62A complete gasket and seal set is essential for maintaining compression integrity and preventing fluid leaks across critical engine junction points. Whether you're rebuilding after significant...09346954- SKU:
- 09346954
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
$88.62 -
MOOSE RACING Gasket Set with Seals - Suzuki 811592
MOOSE RACING
$113.95A complete gasket and seal set is essential for maintaining critical engine compression and preventing fluid leaks at every junction in your engine block. MOOSE RACING's precision-engineered gasket...09346956- SKU:
- 09346956
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
$113.95 -
MOOSE RACING Gasket Clutch Inner - KTM 816055
MOOSE RACING
$11.00A worn or damaged clutch gasket compromises your KTM's seal integrity, leading to fluid leakage and inconsistent clutch engagement during high-load riding. The MOOSE RACING Gasket Clutch Inner...09346958- SKU:
- 09346958
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH INNER
$11.00 -
MOOSE RACING Valve Shim - 10.0 x 2.30 - 5 pack MSE5PK1000230
MOOSE RACING
$10.95Precision valve train maintenance demands reliable shims you can identify at a glance—and trust under load. These MOOSE RACING valve shims eliminate guesswork with laser-etched sizing, so you spend...09261839- SKU:
- 09261839
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 2.30 MM
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- RIDING STYLE:
- ATV
$10.95 -
MOOSE RACING Valve Shim - 10.0 x 2.55 - 5 pack MSE5PK1000255
MOOSE RACING
$10.95Maintaining precise valve clearances is critical for engine performance and longevity, and having quality shims on hand eliminates downtime during valve train service. MOOSE Racing's forged 4140...09261844- SKU:
- 09261844
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- VALVE SHIM THICKNESS METRIC:
- 2.55 MM
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
$10.95 -
MOOSE RACING Valve Shim - 10.0 x 2.60 - 5 pack MSE5PK1000260
MOOSE RACING
$10.95Proper valve shim sizing is critical to maintaining precise valve clearances and engine performance—improper clearances lead to valve float, reduced power delivery, and accelerated wear on your valve...09261845- SKU:
- 09261845
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.60 MM
- RIDING STYLE:
- WATERCRAFT
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
$10.95 -
MOOSE RACING Valve Shim - 10.0 x 2.65 - 5 pack MSE5PK1000265
MOOSE RACING
$10.95Maintaining precise valve clearances is critical to engine performance and longevity—and having quality shims on hand eliminates guesswork during valve train service. MOOSE Racing valve shims are...09261846- SKU:
- 09261846
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- MATERIAL:
- ROLLED
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- 5 PACK
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- TYPE:
- VALVE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 2.65 MM
$10.95 -
MOOSE RACING Valve Shim - 7.48 x 1.30 - 5 pack MSE5PK748130
MOOSE RACING
$10.95Maintaining proper valve clearance is critical to engine performance and longevity—even small deviations can cause valve float, increased wear, and lost power. MOOSE Racing valve shims give you the...09261860- SKU:
- 09261860
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- RIDING STYLE:
- ATV
- TYPE:
- VALVE
- MATERIAL:
- ROLLED
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- RIDING STYLE:
- SNOW
- UNITS:
- 5 PACK
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
- OUTSIDE DIAMETER METRIC:
- 7.48 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- VALVE SHIM THICKNESS METRIC:
- 1.30 MM
$10.95 -
MOOSE RACING Clutch Cover Gasket 817672
MOOSE RACING
$6.84A leaking clutch cover gasket compromises engine sealing and can lead to oil loss and contamination during critical racing or riding conditions. The MOOSE RACING Clutch Cover Gasket 817672 delivers...M817672- SKU:
- M817672
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$6.84 -
MOOSE RACING Clutch Cover Gasket 817685
MOOSE RACING
$6.11A leaking clutch cover gasket compromises engine sealing integrity and creates mess on your shop floor. The MOOSE RACING 817685 delivers OEM-equivalent performance at a fraction of OEM pricing, using...M817685- SKU:
- M817685
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
$6.11 -
MOOSE RACING Clutch Cover Gasket 817690
MOOSE RACING
$10.21A leaking clutch cover gasket compromises engine sealing and can lead to oil seepage that affects performance and reliability. This Moose Racing replacement gasket restores OEM-level integrity at a...M817690- SKU:
- M817690
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$10.21 -
MOOSE RACING Complete Motor Gasket Kit - KTM/Husqvarna 808365
MOOSE RACING
$130.03A complete engine and transmission rebuild demands precision gaskets and seals that match OEM specifications without the OEM price tag. The MOOSE RACING Complete Motor Gasket Kit delivers all the...09344778- SKU:
- 09344778
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$130.03 -
MOOSE RACING Ignition Cover Gasket 817692
MOOSE RACING
$5.62A leaking ignition cover gasket compromises engine sealing and can lead to oil seepage, increased wear, and potential engine damage over time. The MOOSE RACING Ignition Cover Gasket delivers...M817692- SKU:
- M817692
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- ENGINE TYPE:
- 4-STROKE
- TYPE:
- IGNITION COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
$5.62 -
MOOSE RACING Complete Motor Gasket Kit - 250 SXF/XCF 808364
MOOSE RACING
$127.10A complete engine and transmission rebuild requires precision gasket sealing—any leak or poor fit compromises performance and reliability. The MOOSE RACING Complete Motor Gasket Kit eliminates...09344784- SKU:
- 09344784
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
$127.10 -
MOOSE RACING Inner Clutch Cover Gasket 816301
MOOSE RACING
$20.35A leaking clutch cover gasket compromises both engine integrity and performance—allowing oil seepage that can contaminate your clutch assembly and degrade friction characteristics. The MOOSE RACING...09346149- SKU:
- 09346149
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$20.35 -
MOOSE RACING Inner Clutch Cover Gasket 816306
MOOSE RACING
$13.64A leaking inner clutch cover doesn't just cost you oil—it compromises engine sealing integrity and can lead to contamination of critical drivetrain components. The MOOSE RACING Inner Clutch Cover...09346150- SKU:
- 09346150
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$13.64 -
MOOSE RACING Inner Clutch Cover Gasket 816315
MOOSE RACING
$28.13A leaking clutch cover gasket compromises engine sealing and can lead to oil loss and contamination—exactly what you want to avoid during critical race sessions or long rebuild work. The MOOSE RACING...09346151- SKU:
- 09346151
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
$28.13
