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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BOYESEN Replacement Gasket - KTM CCG-44A
BOYESEN
$7.00A worn or compromised clutch cover gasket is a direct path to oil leaks and reduced clutch performance on your KTM. The BOYESEN CCG-44A replacement gasket eliminates the weak point in your factory seal with precision engineering and premium materials,...09343125- SKU:
- 09343125
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- NITRILE RUBBER
- MODEL:
- FACTORY RACING
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$7.00Qty in Cart: 0Quantity:Price:$7.00Subtotal: -
HOT RODS Water Pump Repair Kit - Honda WPK0006
HOT RODS
$34.95A leaking or failing water pump can quickly escalate into catastrophic engine damage, making timely repairs critical for both track and street applications. This HOT RODS repair kit supplies all internal components needed to restore OEM-level cooling...09342918- SKU:
- 09342918
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$34.95 -
HOT RODS Water Pump Repair Kit - Honda WPK0007
HOT RODS
$63.95A leaking or failing water pump can quickly turn a reliable engine into an unreliable liability. This repair kit gives you the precision components—bearings, seals, and gaskets—needed to restore your Honda's cooling system to OEM specifications without...09342919- SKU:
- 09342919
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$63.95Qty in Cart: 0Quantity:Price:$63.95Subtotal: -
HOT RODS Water Pump Repair Kit - Honda WPK0008
HOT RODS
$54.95A leaking or failing water pump can quickly escalate from a minor inconvenience to catastrophic engine damage, especially under racing conditions or sustained high-performance driving. This repair kit delivers OEM-equivalent components—precision...09342920- SKU:
- 09342920
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
$54.95 -
COMETIC Clutch Cover Gasket - Kawasaki EC513018AFM
COMETIC
$13.95A failing clutch cover gasket compromises engine sealing and can lead to oil weeping, contamination, and catastrophic drivetrain failure. The COMETIC Clutch Cover Gasket (EC513018AFM) is engineered to OE specifications and trusted by professional racers...09345456- SKU:
- 09345456
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$13.95Qty in Cart: 0Quantity:Price:$13.95Subtotal: -
COMETIC Top End Gasket Set - Yamaha C3105
COMETIC
$41.95A factory gasket set won't cut it when you're running high boost or aggressive naturally aspirated power levels—combustion pressure and heat cycles will compromise the seal and kill your horsepower gains. The COMETIC C3105 top end gasket set uses...09343427- SKU:
- 09343427
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$41.95 -
PROX Top End Gasket Set - Yamaha 35.2214
PROX
$25.95A quality top-end gasket set is essential for maintaining compression integrity and preventing oil seepage across your cylinder head. PROX delivers OEM-equivalent sealing performance with precision-cut gaskets that ensure reliable engine operation...09345693- SKU:
- 09345693
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
- TYPE:
- TOP END
$25.95Qty in Cart: 0Quantity:Price:$25.95Subtotal: -
PROX Top End Gasket Set - Yamaha 35.2218
PROX
$25.95A quality top-end gasket set is non-negotiable for maintaining compression integrity and preventing oil seepage in your Yamaha engine. Whether you're rebuilding after a refresh or replacing worn seals, the PROX 35.2218 ensures proper sealing across all...09345694- SKU:
- 09345694
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- UNITS:
- SET
$25.95 -
PROX Top End Gasket Set - Yamaha 35.2222
PROX
$25.95A quality top-end gasket set is non-negotiable for engine reliability and longevity. Whether you're rebuilding after a high-mileage service or preparing for competition, PROX's precision-engineered gaskets seal critical surfaces and prevent oil weeping,...09345695- SKU:
- 09345695
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$25.95 -
PROX Top End Gasket Set - Yamaha 35.2225
PROX
$30.95A top-end gasket set is critical for maintaining compression integrity and preventing coolant or oil seepage in your Yamaha engine. Factory gaskets degrade over time due to thermal cycling and mechanical stress, leading to performance loss and potential...09345696- SKU:
- 09345696
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
$30.95 -
PROX Top End Gasket Set - Yamaha 35.2319
PROX
$30.95A quality top-end gasket set is the foundation of any reliable engine rebuild or refresh. PROX gaskets are engineered to OEM specifications, ensuring proper compression sealing and eliminating costly leaks that compromise performance and longevity...09345702- SKU:
- 09345702
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$30.95 -
PROX Top End Gasket Set - Yamaha 35.2320
PROX
$30.95A failed top-end gasket can compromise your engine's integrity and performance in a single ride. The PROX Top End Gasket Set is engineered to maintain a perfect seal under extreme combustion pressures, keeping compression consistent and preventing oil...09345703- SKU:
- 09345703
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$30.95 -
PROX Top End Gasket Set - Yamaha 35.2401
PROX
$62.95A quality top-end gasket set is non-negotiable for engine reliability and peak performance. Whether you're rebuilding after high-mileage wear or stepping up boost levels, PROX's precision-engineered gaskets maintain critical compression sealing and...09345705- SKU:
- 09345705
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- TYPE:
- TOP END
$62.95 -
PROX Top End Gasket Set - Yamaha 35.2414
PROX
$57.95A top-end gasket set is critical for maintaining compression and preventing coolant/oil seepage in your engine's cylinder head assembly. PROX's 35.2414 gasket set delivers reliable sealing across all top-end surfaces, ensuring your engine runs at peak...09345707- SKU:
- 09345707
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET SET
$57.95 -
PROX Top End Gasket Set - Yamaha 35.2426
PROX
$72.95A quality top-end gasket set is essential for maintaining cylinder head integrity and preventing coolant or oil seepage that can compromise engine performance. The PROX 35.2426 delivers OEM-equivalent sealing with precision engineering, ensuring reliable...09345711- SKU:
- 09345711
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$72.95 -
PROX Top End Gasket Set - Suzuki 35.3111
PROX
$17.95A quality top-end gasket set is the foundation of a reliable engine rebuild—using OEM-equivalent sealing surfaces prevents oil leaks, compression loss, and premature wear on freshly rebuilt components. The PROX 35.3111 delivers precision-cut gaskets...09345716- SKU:
- 09345716
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$17.95 -
PROX Top End Gasket Set - Suzuki 35.3218
PROX
$25.95A quality top-end gasket set is the foundation of a reliable engine rebuild—seal leaks, maintain compression, and prevent costly damage from developing. PROX's precision-engineered gasket set ensures proper fitment and durability across all critical...09345724- SKU:
- 09345724
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$25.95 -
PROX Top End Gasket Set - Suzuki 35.3224
PROX
$25.95A worn or compromised top end gasket set is one of the fastest ways to lose compression and reliability in your Suzuki engine. PROX's top end gasket set ensures a proper seal across all critical combustion chamber surfaces, preventing blow-by and...09345725- SKU:
- 09345725
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$25.95Qty in Cart: 0Quantity:Price:$25.95Subtotal: -
PROX Top End Gasket Set - Suzuki 35.3322
PROX
$39.95A top-end gasket set is critical for maintaining a reliable seal between your cylinder head and engine block—without it, you're risking compression loss, oil leakage, and potential engine damage. The PROX 35.3322 delivers OEM-equivalent sealing...09345732- SKU:
- 09345732
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$39.95Qty in Cart: 0Quantity:Price:$39.95Subtotal: -
PROX Top End Gasket Set - Suzuki 35.3323
PROX
$41.95A compromised top end gasket set is a silent engine killer—allowing coolant and oil to seep past critical sealing surfaces, leading to overheating, contamination, and catastrophic failure. The PROX 35.3323 Top End Gasket Set delivers OEM-grade sealing...09345733- SKU:
- 09345733
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$41.95Qty in Cart: 0Quantity:Price:$41.95Subtotal:
