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 823120
MOOSE RACING
$16.37A compromised exhaust gasket leads to performance loss, exhaust leaks, and potential engine damage—issues that compound quickly on high-performance builds. The MOOSE RACING Exhaust Gasket Kit 823120 delivers OEM-grade sealing with the durability required...09345319- SKU:
- 09345319
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
$16.37 -
MOOSE RACING Exhaust Gasket Kit 823142
MOOSE RACING
$21.48A quality exhaust gasket kit is essential for maintaining a proper seal between exhaust manifold and header components, preventing dangerous exhaust leaks that compromise both performance and safety. Factory gaskets deteriorate under extreme heat cycles,...09345324- SKU:
- 09345324
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$21.48 -
MOOSE RACING Exhaust Gasket Kit 823143
MOOSE RACING
$21.87Exhaust system integrity directly impacts engine performance and longevity. A compromised gasket seal allows unburned gases to escape before the exhaust reaches your catalytic converter and muffler, robbing you of power and creating dangerous leaks. The...09345325- SKU:
- 09345325
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$21.87 -
MOOSE RACING Exhaust Gasket Kit 823150
MOOSE RACING
$21.87A failing exhaust gasket kit compromises your engine's seal integrity, leading to exhaust leaks, increased noise, and potential performance loss. MOOSE RACING's 823150 gasket kit delivers OEM-quality sealing across your exhaust system, ensuring optimal...09345332- SKU:
- 09345332
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$21.87Qty in Cart: 0Quantity:Price:$21.87Subtotal: -
MOOSE RACING Exhaust Gasket Kit 823151
MOOSE RACING
$21.87A leaking exhaust manifold gasket will rob your engine of power, increase emissions, and create persistent noise that signals trouble to anyone within earshot. MOOSE RACING's Exhaust Gasket Kit 823151 delivers OEM-quality sealing performance with...09345333- SKU:
- 09345333
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- EXHAUST
$21.87 -
MOOSE RACING Exhaust Gasket Kit 823154
MOOSE RACING
$21.87Exhaust gasket failure is one of the most common causes of performance loss and reliability issues in high-revving engines. A degraded or blown gasket allows exhaust gases to escape before reaching your header or manifold, robbing you of power while...09345335- SKU:
- 09345335
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- EXHAUST
- PRODUCT NAME:
- GASKET KIT
$21.87 -
MOOSE RACING Exhaust Gasket Kit 823156
MOOSE RACING
$13.64A proper exhaust seal is fundamental to engine performance and longevity. Worn or damaged gaskets cause exhaust leaks that rob horsepower, increase emissions, and allow unburned fuel to escape. The MOOSE RACING Exhaust Gasket Kit 823156 delivers...09345337- SKU:
- 09345337
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- KIT
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
$13.64 -
MOOSE RACING Exhaust Gasket Kit 823158
MOOSE RACING
$21.87A leaking exhaust gasket compromises both performance and reliability, allowing unmetered gases to escape and creating diagnostic headaches. MOOSE RACING's Exhaust Gasket Kit 823158 delivers OEM-quality sealing with the durability to handle sustained...09345339- SKU:
- 09345339
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$21.87 -
MOOSE RACING Exhaust Gasket Kit 823159
MOOSE RACING
$21.87A leaking exhaust gasket compromises engine sealing, increases emissions, and wastes horsepower—problems that cascade into costly engine damage if left unchecked. The MOOSE RACING Exhaust Gasket Kit 823159 delivers OEM-quality sealing with premium...09345340- SKU:
- 09345340
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$21.87 -
MOOSE RACING Exhaust Gasket Kit 823160
MOOSE RACING
$21.87A proper exhaust gasket seal is critical to maintaining peak engine performance and preventing costly exhaust leaks that rob horsepower and create unwanted noise. The MOOSE RACING Exhaust Gasket Kit 823160 provides OEM-quality gaskets engineered to...09345341- SKU:
- 09345341
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
$21.87 -
MOOSE RACING Ignition Cover Gasket 816347
MOOSE RACING
$14.45A leaking ignition cover gasket can compromise engine sealing and lead to oil weeping that damages surrounding components. MOOSE RACING's OEM-equivalent gasket delivers precise fitment and lasting durability at a fraction of OEM pricing, making it the...09346591- SKU:
- 09346591
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- IGNITION COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- UNITS:
- EACH
$14.45 -
MOOSE RACING Inner Clutch Gasket 816289
MOOSE RACING
$24.68A failing clutch gasket compromises engine sealing and creates oil weepage that undermines reliability during high-demand racing or extended track sessions. The MOOSE RACING Inner Clutch Gasket 816289 delivers OEM-quality sealing performance at a...09346144- SKU:
- 09346144
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$24.68Qty in Cart: 0Quantity:Price:$24.68Subtotal: -
MOOSE RACING Ignition Cover Gasket 816290
MOOSE RACING
$16.37A failing ignition cover gasket compromises engine sealing and can lead to oil leakage, contamination, and potential ignition system damage. The MOOSE RACING 816290 delivers OEM-quality sealing performance with reliable durability, ensuring your engine...09346145- SKU:
- 09346145
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- IGNITION COVER
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$16.37 -
MOOSE RACING Inner Clutch Gasket 816291
MOOSE RACING
$24.68A leaking clutch gasket compromises both performance and engine longevity—oil seepage leads to clutch slippage, reduced engagement, and potential internal damage. The MOOSE RACING Inner Clutch Gasket delivers OEM-equivalent sealing with precision...09346146- SKU:
- 09346146
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$24.68 -
MOOSE RACING Ignition Cover Gasket 816292
MOOSE RACING
$13.64A leaking ignition cover gasket can compromise engine sealing and lead to oil weeping that attracts dirt and debris. The MOOSE RACING Ignition Cover Gasket 816292 delivers reliable sealing performance with OEM-grade construction, ensuring your engine...09346147- SKU:
- 09346147
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- IGNITION COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$13.64 -
MOOSE RACING Water Pump Rebuild Kit 821332
MOOSE RACING
$57.18A failing water pump can compromise engine cooling and lead to catastrophic overheating—rebuilding yours with OEM-quality components is far more cost-effective than replacing the entire unit. This comprehensive rebuild kit from MOOSE Racing supplies...09345200- SKU:
- 09345200
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$57.18Qty in Cart: 0Quantity:Price:$57.18Subtotal: -
MOOSE RACING Water Pump Rebuild Kit 821335
MOOSE RACING
$43.80A failing water pump compromises engine cooling and puts your entire build at risk. This MOOSE RACING rebuild kit supplies every seal, bearing, and gasket needed to restore your water pump to OEM specifications without sourcing components individually...09345201- SKU:
- 09345201
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$43.80 -
MOOSE RACING Water Pump Rebuild Kit 821336
MOOSE RACING
$40.40A failing water pump compromises cooling system integrity and risks catastrophic engine damage. The MOOSE RACING Water Pump Rebuild Kit 821336 provides all OEM-equivalent components needed to restore your pump to factory specifications without replacing...09345202- SKU:
- 09345202
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
$40.40 -
MOOSE RACING Water Pump Rebuild Kit 821337
MOOSE RACING
$56.40A failing water pump doesn't just compromise cooling efficiency—it puts your engine at risk of catastrophic overheating. This MOOSE RACING rebuild kit gives you everything needed to restore your water pump to OEM specifications without the expense of a...09345203- SKU:
- 09345203
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$56.40 -
MOOSE RACING Water Pump Rebuild Kit 821338
MOOSE RACING
$58.35A failing water pump compromises your entire cooling system, risking catastrophic engine damage during competition or extended operation. The MOOSE RACING Water Pump Rebuild Kit 821338 delivers all necessary internal components—bearings, seals, gaskets,...09345204- SKU:
- 09345204
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$58.35
