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...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...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...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...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 -
On Sale
COMETIC Clutch Cover Gasket - Kawasaki EC513018AFM
COMETIC
MSRP: $13.95Now: $12.56Was: $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...09345456- SKU:
- 09345456
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
MSRP: $13.95Now: $12.56Was: $13.95Qty in Cart: 0Quantity:Price:MSRP: $13.95Now: $12.56Was: $13.95Subtotal: -
On Sale
COMETIC Top End Gasket Set - Yamaha C3105
COMETIC
MSRP: $41.95Now: $37.76Was: $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...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
MSRP: $41.95Now: $37.76Was: $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...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...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...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...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...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...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...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...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...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...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...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...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
$25.95 -
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...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...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:
