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 Complete Motor Gasket Kit - KTM/Husqvarna 8080027
MOOSE RACING
$110.43A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your build's integrity or your budget. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-quality components at a fraction of the price, allowing...09346438- SKU:
- 09346438
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$110.43 -
MOOSE RACING Complete Motor Gasket Kit - Honda CRF250 8080030
MOOSE RACING
$204.56A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise reliability or performance. The MOOSE RACING Complete Motor Gasket Kit eliminates the guesswork of sourcing individual components, giving you everything...09346439- SKU:
- 09346439
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$204.56 -
MOOSE RACING Complete Motor Gasket Kit - Honda CRF450 8080034
MOOSE RACING
$131.46A complete engine and transmission rebuild demands gaskets and seals that match OEM specifications without the OEM price tag. This MOOSE RACING kit delivers exactly that—every gasket, o-ring, and valve seal you need in one package, manufactured to...09346440- SKU:
- 09346440
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$131.46 -
MOOSE RACING Top End Gasket Kit - Honda 8100028
MOOSE RACING
$56.32A complete top-end gasket kit is essential when rebuilding your engine—whether you're replacing a piston, performing routine maintenance, or seeking a cost-effective compression boost. This MOOSE RACING kit eliminates the guesswork by bundling every...09346446- SKU:
- 09346446
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- DISPLACEMENT:
- 125 CC
- TYPE:
- TOP END
$56.32 -
MOOSE RACING Complete Motor Gasket Kit without Seals 8110028
MOOSE RACING
$135.61A complete engine and transmission rebuild demands precision-fit gaskets that won't fail under boost or sustained RPM. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-level reliability at a fraction of dealer pricing, letting you confidently...09346451- SKU:
- 09346451
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$135.61Qty in Cart: 0Quantity:Price:$135.61Subtotal: -
MOOSE RACING Complete Motor Gasket Kit without Seals - YZ250 8110029
MOOSE RACING
$165.87A complete engine rebuild demands precision gaskets and seals that won't compromise your YZ250's reliability or performance. This Moose Racing kit eliminates the guesswork of sourcing individual components, giving you every gasket, o-ring, and valve seal...09346452- SKU:
- 09346452
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
$165.87 -
MOOSE RACING Ignition Cover Gasket 816288
MOOSE RACING
$13.64A failing ignition cover gasket compromises engine sealing and invites oil leakage that can damage ignition components and degrade performance. The MOOSE RACING 816288 delivers OEM-grade reliability with a precision fit designed to maintain a watertight...09346143- SKU:
- 09346143
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- TYPE:
- IGNITION COVER
$13.64 -
MOOSE RACING Water Pump Rebuild Kit 821364
MOOSE RACING
$35.25A failing water pump compromises engine cooling and risks catastrophic overheating—especially critical during high-performance racing or extended track sessions. The MOOSE RACING Water Pump Rebuild Kit 821364 gives you a complete, cost-effective solution...09345208- SKU:
- 09345208
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$35.25 -
MOOSE RACING Water Pump Rebuild Kit 821661
MOOSE RACING
$55.05A failing water pump can leave you stranded—or worse, destroy your engine. This MOOSE RACING rebuild kit gives you everything needed to restore your pump to factory specifications without the cost of a complete replacement. Whether you're prepping for...09345257- SKU:
- 09345257
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$55.05 -
MOOSE RACING Water Pump Rebuild Kit 821665
MOOSE RACING
$45.68A failing water pump compromises your entire cooling system, risking catastrophic engine damage during high-performance driving. The MOOSE RACING Water Pump Rebuild Kit 821665 restores your pump to OEM specifications with factory-quality seals, bearings,...09345258- SKU:
- 09345258
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$45.68 -
MOOSE RACING Water Pump Rebuild Kit 821264
MOOSE RACING
$37.45A failing water pump can sideline your engine before race day—corrosion, seal degradation, and bearing wear compromise cooling efficiency and create catastrophic failure risk. This MOOSE RACING rebuild kit supplies every gasket, seal, bearing, and snap...09345186- SKU:
- 09345186
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$37.45 -
MOOSE RACING Water Pump Rebuild Kit 821273
MOOSE RACING
$48.77A failing water pump compromises your entire cooling system, risking catastrophic engine damage and costly downtime. The MOOSE RACING Water Pump Rebuild Kit 821273 delivers all the OEM-quality seals, bearings, and gaskets needed to restore your pump to...09345187- SKU:
- 09345187
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
$48.77 -
MOOSE RACING Complete Motor Gasket Kit - CR500 808272
MOOSE RACING
$62.78A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work. This MOOSE RACING kit eliminates the frustration of sourcing individual components and potential fitment issues by bundling everything you...09340137- SKU:
- 09340137
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
$62.78 -
MOOSE RACING Top End Gasket Kit - 250SXF 810328
MOOSE RACING
$80.32A 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 delivers OEM-quality components at a fraction of the price, letting you restore your 250SXF's...09341009- SKU:
- 09341009
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- RIDING STYLE:
- STREET
$80.32 -
MOOSE RACING Top End Gasket Kit - 125SX 810330
MOOSE RACING
$48.71A top-end rebuild demands precision components that won't compromise reliability or performance. The MOOSE RACING Gasket Kit eliminates the guesswork and expense of sourcing individual seals, gaskets, and O-rings—delivering a complete, engineered...09341267- SKU:
- 09341267
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$48.71 -
MOOSE RACING Inner Clutch Cover Gasket 816271
MOOSE RACING
$13.64A leaking clutch cover gasket compromises oil containment and engine reliability—exactly why OEM-quality sealing matters on your rebuild. The MOOSE RACING Inner Clutch Cover Gasket delivers genuine OEM-level performance at a fraction of OEM pricing,...09346135- SKU:
- 09346135
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$13.64 -
MOOSE RACING Inner Clutch Gasket 816300
MOOSE RACING
$33.38A leaking clutch gasket compromises both engine performance and reliability, leaving oil seepage that can damage adjacent components. The MOOSE RACING Inner Clutch Gasket 816300 delivers OEM-equivalent sealing with precision engineering and domestic...09346148- SKU:
- 09346148
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- RIDING STYLE:
- STREET
$33.38 -
MOOSE RACING Inner Clutch Cover Gasket 816759
MOOSE RACING
$16.37A failing clutch cover gasket will compromise your engine's oil containment and leave you stranded. The MOOSE RACING Inner Clutch Cover Gasket 816759 delivers OEM-specification sealing without the premium OEM price tag, allowing you to rebuild with...09346171- SKU:
- 09346171
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
$16.37Qty in Cart: 0Quantity:Price:$16.37Subtotal: -
MOOSE RACING Outer Clutch Cover Gasket 817976
MOOSE RACING
$7.44A leaking clutch cover gasket compromises engine sealing and can lead to oil loss, contamination, and costly engine damage. The MOOSE RACING Outer Clutch Cover Gasket delivers OEM-equivalent sealing performance at a fraction of OEM pricing, using...09346183- SKU:
- 09346183
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$7.44Qty in Cart: 0Quantity:Price:$7.44Subtotal: -
MOOSE RACING Ignition Cover Gasket 816222
MOOSE RACING
$17.79A leaking ignition cover gasket compromises engine sealing and can lead to oil seepage that damages surrounding components. The MOOSE RACING Ignition Cover Gasket (816222) delivers OEM-grade durability at a fraction of OEM pricing, ensuring a reliable...09346898- SKU:
- 09346898
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- TYPE:
- IGNITION COVER
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$17.79
