Dirt Bike Engine Gaskets and Kits
Dirt Bike Engine Gaskets & Top-End Kits for Yamaha, Honda XR650L & CRF at JJ Motorsports
Refresh your dirt bike's top end with premium engine gaskets and complete kits from JJ Motorsports, precision-manufactured for leak-free sealing, optimal compression, and reliable performance in motocross, enduro, and trail riding. Our selection includes full gasket sets, top-end rebuild kits, O-rings, and head/base gaskets designed for perfect fitment, heat resistance, and easy installation without machining. Compatible with popular models like Yamaha YZ/WR, Honda XR650L, CRF, and more, these high-quality components from trusted brands ensure smoother operation, reduced oil consumption, and extended engine life under dusty, high-RPM conditions. From Moose Racing's comprehensive off-road sets to ProX and Athena's OEM-spec top-end kits, get everything needed for a professional rebuild—head gaskets, valve seals, base gaskets, and more—to restore power and prevent blow-by on every ride.
Shop brands like Moose Racing, ProX, and Athena for race-proven quality. Explore related categories such as dirt bike piston and ring kits for full rebuilds or dirt bike engine for cylinders and valves.
Top Dirt Bike Engine Gaskets & Kits
- Moose Offroad Complete Gasket Set Yamaha 8080037MSE – Full engine gasket kit for Yamaha models; includes all necessary seals, O-rings, and gaskets for complete top-to-bottom rebuild with OEM reliability.
- ProX Top End Gasket Set Honda XR650L 35.1623 – Precision top-end kit for Honda XR650L; features head, base, and valve stem seals for leak-free compression and easy installation.
- Athena Top End Gasket Kit Honda P400210600323 – High-performance top-end rebuild kit for Honda CRF models; includes multi-layer steel head gasket, O-rings, and seals for maximum sealing under extreme conditions.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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MOOSE RACING Clutch Cover Gasket 817489
MOOSE RACING
$6.43A failing clutch cover gasket can lead to oil seepage, contamination, and premature wear on your clutch assembly—compromising both reliability and performance. The MOOSE RACING Clutch Cover Gasket...M817489- SKU:
- M817489
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$6.43 -
MOOSE RACING Clutch Cover Gasket 817496
MOOSE RACING
$11.64A leaking clutch cover gasket compromises both engine performance and reliability—allowing oil seepage that can damage internal components and create a messy engine bay. The MOOSE RACING Clutch Cover...M817496- SKU:
- M817496
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
$11.64Qty in Cart: 0Quantity:Price:$11.64Subtotal: -
MOOSE RACING Ignition Cover Gasket 817504
MOOSE RACING
$6.88A leaking ignition cover gasket compromises engine sealing and can lead to oil weeping that accelerates wear on surrounding components. The MOOSE RACING Ignition Cover Gasket delivers OEM-grade...M817504- SKU:
- M817504
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
- UNITS:
- EACH
$6.88 -
MOOSE RACING Clutch Cover Gasket 817507
MOOSE RACING
$6.75A leaking clutch cover gasket compromises engine sealing and can lead to oil loss and contamination—a problem that demands an immediate, reliable solution. The MOOSE RACING Clutch Cover Gasket 817507...M817507- SKU:
- M817507
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$6.75 -
MOOSE RACING Motor Gasket Kit with Seal - KTM 250SX/EXC 811300
MOOSE RACING
$90.04A complete engine and transmission rebuild demands precision components—and OEM gasket kits often come with premium pricing that leaves your budget depleted. The MOOSE RACING Motor Gasket Kit...09340104- SKU:
- 09340104
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
$90.04 -
MOOSE RACING Motor Gasket Kit with Seal - KTM 65SX 811302
MOOSE RACING
$89.83A complete engine and transmission rebuild demands precision-fitted gaskets and seals—compromise here and you're risking oil leaks, contamination, and catastrophic failure down the line. The MOOSE...09340106- SKU:
- 09340106
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$89.83 -
MOOSE RACING Motor Gasket Kit with Seal - KTM 125SX/EXC 811303
MOOSE RACING
$90.04A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your KTM's performance or reliability. This Moose Racing kit eliminates the guesswork and...09340107- SKU:
- 09340107
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$90.04 -
MOOSE RACING Motor Gasket Kit with Seal - KTM200SX 811308
MOOSE RACING
$98.45A complete engine and transmission rebuild demands precision components that won't compromise your build quality or strain your budget. This MOOSE RACING gasket and seal kit delivers OEM-equivalent...09340111- SKU:
- 09340111
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
$98.45 -
MOOSE RACING Motor Gasket Kit with Seal - KTM125SX/EXC 811309
MOOSE RACING
$103.61A complete engine and transmission rebuild demands precision-fit gaskets and seals—compromising on quality here invites oil leaks, contamination, and premature failure. The MOOSE RACING Motor Gasket...09340112- SKU:
- 09340112
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
$103.61 -
MOOSE RACING Motor Gasket Kit with Seal - KLR/DRZ110 811415
MOOSE RACING
$91.21A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work. This MOOSE RACING kit eliminates the guesswork and expense of sourcing individual...09340113- SKU:
- 09340113
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$91.21 -
MOOSE RACING Motor Gasket Kit with Seal - KX125 811430
MOOSE RACING
$118.19A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or wallet. The MOOSE RACING Motor Gasket Kit delivers OEM-quality components at a...09340114- SKU:
- 09340114
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$118.19 -
MOOSE RACING Top End Gasket Kit - TE-250SX/EXC 810327
MOOSE RACING
$32.09A top-end rebuild demands precision gaskets and seals that won't compromise engine integrity or cost you a fortune. The MOOSE RACING Top End Gasket Kit eliminates the guesswork with a complete, U.S...09341007- SKU:
- 09341007
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- UNITS:
- KIT
$32.09 -
MOOSE RACING Motor Gasket Kit with Seal - KTM 811327
MOOSE RACING
$105.55A complete engine and transmission rebuild demands precision-fit gaskets and seals—factory tolerances won't accept substitutes. MOOSE Racing delivers OEM-equivalent components at a fraction of...09341008- SKU:
- 09341008
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$105.55 -
MOOSE RACING Complete Motor Gasket Kit - RMZ250 808568
MOOSE RACING
$129.09A complete engine rebuild demands gasket and seal integrity—any leak compromises performance and reliability. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-quality components at a fraction...09341270- SKU:
- 09341270
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- UNITS:
- KIT
$129.09Qty in Cart: 0Quantity:Price:$129.09Subtotal: -
MOOSE RACING Top End Gasket Kit - KX125 810428
MOOSE RACING
$39.34When you're rebuilding a KX125 top end, using OEM-quality gaskets and seals isn't optional—it's essential. This Moose Racing kit gives you every gasket, O-ring, and seal you need for a complete...09340864- SKU:
- 09340864
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$39.34 -
MOOSE RACING Motor Gasket Kit with Seal - KTM 811312
MOOSE RACING
$52.05A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or your budget. Moose Racing delivers OEM-specification components at a fraction of...09340865- SKU:
- 09340865
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$52.05Qty in Cart: 0Quantity:Price:$52.05Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - KTM 811315
MOOSE RACING
$124.38A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work. MOOSE RACING's OEM-spec gasket kit delivers genuine replacement seals and formed...09340866- SKU:
- 09340866
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$124.38 -
MOOSE RACING Top End Gasket Kit - KTM 85 810315
MOOSE RACING
$25.81When you're rebuilding a KTM 85 top end, you need gaskets and seals engineered for reliability—not bargain-bin parts that compromise your engine's integrity. This Moose Racing kit gives you...09340867- SKU:
- 09340867
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$25.81 -
MOOSE RACING Top End Gasket Kit - RM250 810569
MOOSE RACING
$39.34A top-end rebuild demands precision-fitted gaskets and seals that won't compromise compression or reliability. The MOOSE RACING Top End Gasket Kit delivers OEM-quality components at a fraction of OEM...09340868- SKU:
- 09340868
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$39.34Qty in Cart: 0Quantity:Price:$39.34Subtotal: -
MOOSE RACING Top End Gasket Kit - RMZ450 810590
MOOSE RACING
$78.88A top-end rebuild demands precision—gaskets and seals that won't compromise your engine's integrity or cost you a fortune. The MOOSE RACING Top End Gasket Kit delivers OEM-quality components at a...09340870- SKU:
- 09340870
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$78.88
