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 Motor Gasket Kit with Seal - Husqvarna/KTM 811374
MOOSE RACING
$145.13A complete engine and transmission rebuild demands precision-fit gaskets and seals—any compromise on fit or material quality risks oil leaks, compression loss, and premature wear. The MOOSE RACING Motor Gasket Kit delivers OEM-equivalent performance at a...09345370- SKU:
- 09345370
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$145.13Qty in Cart: 0Quantity:Price:$145.13Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - Kawasaki 811485
MOOSE RACING
$200.43A complete engine and transmission rebuild demands precision-fit gaskets and seals you can trust—and OEM replacements often carry premium pricing that doesn't reflect the part's actual value. The MOOSE RACING Motor Gasket Kit delivers genuine...09345371- SKU:
- 09345371
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$200.43 -
MOOSE RACING Motor Gasket Kit with Seal - KTM 811976
MOOSE RACING
$163.23A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your tolerances or leak under load. MOOSE Racing Motor Gasket Kits deliver OEM-equivalent performance at a fraction of the cost, giving you the...09345372- SKU:
- 09345372
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$163.23 -
MOOSE RACING Complete Motor Gasket Kit - TC125 8080009
MOOSE RACING
$77.45A complete engine and transmission rebuild demands precision gaskets and seals that won't fail under load or high RPM cycles. The MOOSE RACING Complete Motor Gasket Kit eliminates the frustration of sourcing individual components by bundling everything...09346437- SKU:
- 09346437
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- ENGINE
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
$77.45 -
MOOSE RACING Complete Motor Gasket Kit without Seals - CRF450 8110035
MOOSE RACING
$150.96A complete engine rebuild demands precision gaskets that won't compromise reliability—OEM quality shouldn't require OEM pricing. This Moose Racing kit delivers comprehensive coverage for both engine and transmission, engineered to exact specifications so...09346454- SKU:
- 09346454
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$150.96Qty in Cart: 0Quantity:Price:$150.96Subtotal: -
MOOSE RACING Head Cover Gasket - Honda 819199
MOOSE RACING
$64.67Head cover gaskets are prone to deterioration over time, leading to oil leaks that compromise engine cleanliness and performance. OEM replacements come at a premium, but MOOSE Racing delivers genuine-quality gaskets at a fraction of the cost—without...09346456- SKU:
- 09346456
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- HEAD COVER
- UNITS:
- EACH
$64.67 -
MOOSE RACING Water Pump Rebuild Kit 821412
MOOSE RACING
$43.28A failing water pump can strand you mid-season or compromise engine temperatures under sustained load. The MOOSE RACING Water Pump Rebuild Kit 821412 gives you a cost-effective alternative to replacing the entire assembly, restoring OEM performance with...09345214- SKU:
- 09345214
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
$43.28 -
MOOSE RACING Water Pump Rebuild Kit 821417
MOOSE RACING
$43.28A failing water pump can compromise your entire cooling system and leave you stranded on track or trail. This MOOSE RACING rebuild kit supplies every gasket, seal, bearing, and snap ring needed to restore your water pump to OEM specifications without the...09345215- SKU:
- 09345215
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$43.28 -
MOOSE RACING Water Pump Rebuild Kit 821549
MOOSE RACING
$41.62Water pump failure leaves you stranded—and rebuilding with OEM-quality components is far more cost-effective than replacement. The MOOSE RACING Water Pump Rebuild Kit 821549 supplies every gasket, seal, bearing, and snap ring needed to restore your pump...09345239- SKU:
- 09345239
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$41.62 -
MOOSE RACING Water Pump Rebuild Kit 821550
MOOSE RACING
$41.30A failing water pump compromises your engine's cooling system, risking catastrophic overheating during aggressive track sessions or extended high-performance driving. Rather than replacing the entire unit, this MOOSE RACING rebuild kit restores your...09345240- SKU:
- 09345240
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$41.30 -
MOOSE RACING Water Pump Rebuild Kit 821567
MOOSE RACING
$27.78A failing water pump compromises cooling system integrity and risks catastrophic engine damage. This complete rebuild kit lets you restore your water pump to OEM specifications without the expense of replacing the entire assembly. Whether you're...09345241- SKU:
- 09345241
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$27.78 -
MOOSE RACING Water Pump Rebuild Kit 821587
MOOSE RACING
$35.70A failing water pump compromises engine cooling efficiency and risks catastrophic overheating. This comprehensive rebuild kit from MOOSE RACING supplies every gasket, seal, bearing, and snap ring needed to restore your water pump to OEM...09345246- SKU:
- 09345246
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$35.70 -
MOOSE RACING Water Pump Rebuild Kit 821590
MOOSE RACING
$38.72A failing water pump can sideline your engine and leave you stranded. This complete rebuild kit from MOOSE RACING includes every gasket, seal, bearing, and O-ring needed to restore your water pump to factory specifications—saving you the cost and...09345247- SKU:
- 09345247
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
$38.72 -
MOOSE RACING Water Pump Rebuild Kit 821593
MOOSE RACING
$36.20A failing water pump can quickly become catastrophic—coolant leaks, overheating, and engine damage happen fast. This MOOSE RACING rebuild kit gives you everything needed to restore your water pump to factory performance without the expense of a full...09345248- SKU:
- 09345248
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$36.20Qty in Cart: 0Quantity:Price:$36.20Subtotal: -
MOOSE RACING Head Cover Gasket - Suzuki 817907
MOOSE RACING
$25.91A leaking valve cover gasket compromises engine performance and creates a messy engine bay. OEM gaskets come at premium pricing, but Moose Racing delivers genuine replacement quality at a fraction of the cost. This U.S.-made gasket maintains reliable...09346174- SKU:
- 09346174
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- TYPE:
- VALVE COVER
- UNITS:
- EACH
$25.91 -
MOOSE RACING Head Cover Gasket - Kawasaki 817924
MOOSE RACING
$21.00A leaking valve cover gasket compromises engine bay cleanliness and can lead to oil contamination if left unaddressed. The MOOSE RACING Head Cover Gasket delivers OEM-equivalent sealing performance at a fraction of dealer pricing, allowing you to rebuild...09346175- SKU:
- 09346175
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- GASKET
- TYPE:
- VALVE COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$21.00 -
MOOSE RACING Outer Clutch Cover Gasket 817928
MOOSE RACING
$6.91A leaking clutch cover gasket compromises engine sealing and invites oil contamination into your drivetrain—exactly what your performance build doesn't need. The MOOSE RACING Outer Clutch Cover Gasket delivers OEM-equivalent sealing at a fraction of OEM...09346176- SKU:
- 09346176
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$6.91Qty in Cart: 0Quantity:Price:$6.91Subtotal: -
MOOSE RACING Outer Clutch Cover Gasket 817930
MOOSE RACING
$6.76A failing clutch cover gasket compromises engine sealing and invites oil leakage into your ignition system—exactly what you don't need mid-race or mid-rebuild. The MOOSE RACING 817930 delivers OEM-equivalent sealing performance at a fraction of the cost,...09346177- SKU:
- 09346177
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
$6.76 -
MOOSE RACING Head Cover Gasket - Honda 817932
MOOSE RACING
$18.41Factory valve cover gaskets command premium pricing, but Moose Racing delivers OEM-quality seals at a fraction of the cost. This head cover gasket maintains a reliable seal under engine heat and pressure cycles, preventing oil leakage that can compromise...09346179- SKU:
- 09346179
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- VALVE COVER
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$18.41 -
MOOSE RACING Outer Clutch Cover Gasket 817943
MOOSE RACING
$10.87A leaking clutch cover gasket compromises engine sealing and invites oil contamination into critical drivetrain components. The MOOSE RACING Outer Clutch Cover Gasket 817943 delivers OEM-equivalent fitment and reliability at a fraction of OEM pricing,...09346180- SKU:
- 09346180
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$10.87Qty in Cart: 0Quantity:Price:$10.87Subtotal:
