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 Exhaust Gasket Kit 823113
MOOSE RACING
$16.40A quality exhaust gasket kit is essential for maintaining a proper seal between your exhaust manifold and engine head—critical for preventing performance-robbing exhaust leaks and ensuring accurate emissions readings. MOOSE RACING's 823113 gasket kit...09345312- SKU:
- 09345312
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- EXHAUST
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
$16.40 -
MOOSE RACING Exhaust Gasket Kit 823114
MOOSE RACING
$16.37A quality exhaust gasket kit is critical for maintaining a proper seal between exhaust manifold flanges and preventing costly leaks that compromise performance and fuel efficiency. MOOSE RACING's 823114 kit delivers OEM-equivalent gaskets engineered to...09345313- SKU:
- 09345313
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
$16.37 -
MOOSE RACING Exhaust Gasket Kit 823118
MOOSE RACING
$16.37A leaking exhaust gasket compromises both performance and reliability, allowing unburned fuel and exhaust gases to escape outside your intended path. This MOOSE RACING Exhaust Gasket Kit 823118 delivers OEM-quality sealing with premium materials...09345317- SKU:
- 09345317
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$16.37 -
MOOSE RACING Water Pump Rebuild Kit 821370
MOOSE RACING
$37.61A failing water pump compromises your engine's cooling system and risks catastrophic overheating—especially under sustained racing conditions or high-performance driving. The MOOSE RACING Water Pump Rebuild Kit 821370 gives you a complete, OEM-quality...09345211- SKU:
- 09345211
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$37.61 -
MOOSE RACING Water Pump Rebuild Kit 821372
MOOSE RACING
$34.61A failing water pump can leave you stranded or, worse, cost you a race. This MOOSE RACING rebuild kit gives you everything needed to restore your water pump to factory specifications without the downtime of sourcing individual components. Whether you're...09345212- SKU:
- 09345212
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$34.61 -
MOOSE RACING Water Pump Rebuild Kit 821612
MOOSE RACING
$49.72A failing water pump can leave you stranded or cause catastrophic engine damage—and replacement isn't always practical for race teams or serious enthusiasts who need their engine back on the track fast. The MOOSE RACING Water Pump Rebuild Kit 821612...09345250- SKU:
- 09345250
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$49.72 -
MOOSE RACING Water Pump Rebuild Kit 821635
MOOSE RACING
$58.92A failing water pump compromises your entire cooling system—leaving you stranded trackside or dealing with catastrophic engine damage. The MOOSE RACING Water Pump Rebuild Kit 821635 gives you everything needed to restore your pump to OEM specifications...09345253- SKU:
- 09345253
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$58.92 -
MOOSE RACING Water Pump Rebuild Kit 821636
MOOSE RACING
$46.83A failing water pump can quickly escalate from a minor coolant leak into catastrophic engine damage. This MOOSE RACING rebuild kit supplies every gasket, seal, bearing, and snap ring needed to restore your water pump to factory performance...09345254- SKU:
- 09345254
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$46.83 -
MOOSE RACING Water Pump Rebuild Kit 821639
MOOSE RACING
$44.05A failing water pump can leave you stranded on the track or trail, and replacement isn't always practical when a complete rebuild will restore your pump to OEM specifications. This MOOSE RACING rebuild kit gives you every seal, bearing, and gasket needed...09345255- SKU:
- 09345255
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$44.05 -
MOOSE RACING Water Pump Rebuild Kit 821641
MOOSE RACING
$40.22A failing water pump can quickly escalate into catastrophic engine damage, making a quality rebuild kit essential maintenance for any serious racer or performance enthusiast. Rather than replacing the entire assembly, this MOOSE RACING rebuild kit...09345256- SKU:
- 09345256
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$40.22 -
MOOSE RACING Clutch Outer Gasket - Suzuki 816169
MOOSE RACING
$13.02A worn or degraded clutch outer gasket compromises your clutch cover seal, leading to oil seepage, contamination, and potential clutch failure during critical racing moments. The MOOSE RACING Clutch Outer Gasket is engineered to maintain a reliable,...09346960- SKU:
- 09346960
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- TYPE:
- CLUTCH OUTER
- RIDING STYLE:
- OFF-ROAD
$13.02 -
MOOSE RACING Ignition Cover Gasket 816170
MOOSE RACING
$11.22A failing ignition cover gasket compromises your engine's seal integrity, risking oil seepage and potential ignition system damage—especially critical in high-performance and racing applications where reliability is non-negotiable. The MOOSE Racing...09346961- SKU:
- 09346961
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$11.22 -
MOOSE RACING Ignition Cover Gasket 816239
MOOSE RACING
$10.84An ignition cover gasket that fails prematurely wastes time and risks engine contamination. The MOOSE RACING Ignition Cover Gasket delivers OEM-quality sealing at a fraction of the cost, whether you're rebuilding from the ground up or addressing a...09342130- SKU:
- 09342130
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$10.84 -
MOOSE RACING Complete Motor Gasket Kit - RMZ250 808567
MOOSE RACING
$141.67A complete engine and transmission rebuild demands precision gaskets and seals that won't fail under load. The MOOSE RACING Complete Motor Gasket Kit eliminates guesswork by providing every gasket, o-ring, and valve seal you need in one package—all...09342203- SKU:
- 09342203
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$141.67 -
MOOSE RACING Top End Gasket Kit - CRF250 810285
MOOSE RACING
$73.09When you're rebuilding a CRF250 top end, you need gaskets and seals that maintain proper compression and prevent oil leakage under sustained load. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals at a fraction of the cost, so you can...09342205- SKU:
- 09342205
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
$73.09 -
MOOSE RACING Top End Gasket Kit - 350SXF 810339
MOOSE RACING
$97.12A top-end rebuild demands precision gasket sealing—any leak compromises compression, performance, and engine longevity. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals at a fraction of the cost, with every component engineered for accurate...09342206- SKU:
- 09342206
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
$97.12 -
MOOSE RACING Exhaust Gasket Kit 823155
MOOSE RACING
$21.87Exhaust gasket degradation is one of the most common sources of performance loss and emissions leaks in high-performance engines. A quality gasket kit ensures a perfect seal between exhaust manifolds and headers, preventing power-robbing blow-by and...09345336- SKU:
- 09345336
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
$21.87 -
MOOSE RACING Complete Motor Gasket Kit - TW200 808642
MOOSE RACING
$77.38A complete engine and transmission rebuild demands precision gaskets and seals that won't fail under load. The MOOSE RACING Complete Motor Gasket Kit eliminates the guesswork—and the cost of sourcing individual OEM components—by bundling everything you...09344785- SKU:
- 09344785
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- ENGINE
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$77.38 -
MOOSE RACING Top End Gasket - KX125 03 810430
MOOSE RACING
$38.67When you're rebuilding a KX125 top end, you need gaskets and seals that won't let you down—especially if you're running higher compression or replacing a piston. The MOOSE RACING Top End Gasket Set gives you every component required for a complete,...09340072- SKU:
- 09340072
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
$38.67 -
MOOSE RACING Top End Gasket - KLX/DRZ110 810415
MOOSE RACING
$38.72A top-end rebuild demands precision gaskets and seals that won't compromise engine integrity or cost you a fortune. The MOOSE RACING gasket set eliminates the need to source OEM parts at premium prices while delivering the same durability and accuracy...09340073- SKU:
- 09340073
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- TOP END
$38.72
