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!
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- Qty in Cart
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- Price
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VERTEX Top End Gasket Kit - Yamaha 8100060
VERTEX
$37.25A compromised top-end seal will bleed horsepower and invite catastrophic engine failure. The VERTEX Top End Gasket Kit delivers OEM-quality gaskets engineered for Yamaha engines, ensuring a pressure-tight seal across cylinder head, valve cover, and...09348026- SKU:
- 09348026
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$37.25 -
VERTEX Top End Gasket Kit - Yamaha 8100022
VERTEX
$29.87A degraded top-end gasket kit compromises compression, invites oil leakage, and forces your engine to work harder than it should. The VERTEX 8100022 restores proper sealing across all critical surfaces, allowing your Yamaha to operate at peak efficiency...09348027- SKU:
- 09348027
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$29.87 -
VERTEX Top End Gasket Kit - Suzuki 810548
VERTEX
$29.30A leaking or worn top-end gasket will compromise your engine's performance and reliability—leading to coolant loss, oil seepage, and potential catastrophic damage. The VERTEX 810548 Top End Gasket Kit delivers OEM-equivalent sealing for Suzuki engines,...09348031- SKU:
- 09348031
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$29.30 -
VERTEX Top End Gasket Kit - Honda 810280
VERTEX
$71.87A failing top-end gasket kit compromises combustion sealing and leads to oil leaks, lost compression, and accelerated engine wear. The VERTEX 810280 delivers precision engineering and OEM-grade materials to restore your Honda's compression integrity and...09348032- SKU:
- 09348032
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$71.87 -
VERTEX Top End Gasket Kit - Yamaha 810601
VERTEX
$13.70A degraded top end gasket kit compromises cylinder sealing, leading to coolant leaks, compression loss, and potential engine damage. The VERTEX 810601 delivers OEM-equivalent sealing integrity with precision-engineered gasket materials that withstand...09348034- SKU:
- 09348034
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$13.70 -
VERTEX Top End Gasket Kit - Honda 810207
VERTEX
$26.87Top-end gasket failure compromises engine sealing and can lead to oil leaks, coolant weeping, and performance loss. The VERTEX 810207 kit delivers OEM-equivalent sealing with precision-engineered gaskets that handle sustained boost and track temperatures...09347986- SKU:
- 09347986
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$26.87 -
VERTEX Top End Gasket Kit - Honda 810208
VERTEX
$41.03A failing top-end gasket compromises compression, causes oil leakage, and invites catastrophic engine damage. The VERTEX 810208 kit delivers OEM-equivalent sealing precision with all gaskets, seals, and hardware needed for a complete rebuild—eliminating...09347987- SKU:
- 09347987
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
$41.03 -
VERTEX Top End Gasket Kit - Yamaha 810639
VERTEX
$26.38A failed top-end gasket can compromise your engine's seal integrity and lead to compression loss, oil seepage, and reduced performance—especially under racing conditions. The VERTEX 810639 gasket kit delivers OEM-equivalent sealing across all critical...09347993- SKU:
- 09347993
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$26.38 -
VERTEX Top End Gasket Kit - Yamaha 810687
VERTEX
$79.20A failing top-end gasket kit will cost you power, reliability, and potentially catastrophic engine damage. The VERTEX 810687 delivers OEM-spec sealing across your entire top end, eliminating leaks and restoring compression consistency in your Yamaha...09347994- SKU:
- 09347994
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$79.20 -
VERTEX Top End Gasket Kit - Honda 810259
VERTEX
$42.50A top end gasket kit is critical for any Honda engine rebuild—failed gaskets lead to compression loss, oil leaks, and catastrophic engine damage. The VERTEX 810259 kit provides all necessary gaskets in one package, eliminating the risk of missing...09347995- SKU:
- 09347995
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$42.50 -
VERTEX Top End Gasket Kit - Honda 810261
VERTEX
$48.37A top-end gasket kit is essential maintenance for any Honda engine experiencing oil seepage, compression loss, or preparing for high-boost applications. VERTEX gaskets are engineered to OEM specifications with superior material composition, ensuring...09347997- SKU:
- 09347997
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
$48.37 -
VERTEX Top End Gasket Kit - Kawasaki 810484
VERTEX
$30.75A worn or failing top-end gasket kit compromises engine sealing, leading to oil leaks, coolant seepage, and potential internal damage that compounds over time. The VERTEX Top End Gasket Kit is engineered to restore OEM-level compression and containment...09348030- SKU:
- 09348030
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$30.75 -
VERTEX Top End Gasket Kit - Kawasaki 810483
VERTEX
$31.33A top-end gasket kit is essential for maintaining a proper seal between critical engine components, preventing coolant and oil leaks that compromise engine reliability and performance. Whether you're rebuilding after high-mileage wear or preparing for...09348033- SKU:
- 09348033
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$31.33 -
VERTEX Top End Gasket Kit - KTM 810315
VERTEX
$26.38A failed top-end gasket can cost you race time and engine reliability. The VERTEX Top End Gasket Kit (810315) delivers OEM-quality sealing with precision-cut components engineered to handle the heat and pressure of demanding riding conditions. Whether...09348019- SKU:
- 09348019
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$26.38 -
VERTEX Top End Gasket Kit - Honda 810235
VERTEX
$38.13A compromised top-end gasket can silently rob your Honda engine of power, efficiency, and reliability—especially under high-load conditions. The VERTEX 810235 Top End Gasket Kit delivers complete sealing integrity with precision-engineered components...09348016- SKU:
- 09348016
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$38.13 -
WINDEROSA Complete Gasket Kit - Sea-Doo 785 611205
WINDEROSA
$94.37Engine gasket degradation is a silent killer of marine performance—failed seals lead to compression loss, coolant mixing, and catastrophic engine failure. The WINDEROSA Complete Gasket Kit ensures you're not gambling with a rebuild; this full-coverage...PD811410- SKU:
- PD811410
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- COMPLETE
$94.37 -
WINDEROSA Complete Gasket Kit - Sea-Doo 951 611206
WINDEROSA
$159.87Engine gasket failure compromises compression, invites fluid leaks, and can lead to catastrophic internal damage—especially critical in high-performance Sea-Doo 951 engines where reliability directly impacts your race results or recreational reliability...PD811415- SKU:
- PD811415
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- COMPLETE
- UNITS:
- SET
$159.87 -
WINDEROSA Complete Gasket Kit - Sea-Doo 580 611200
WINDEROSA
$94.92Engine gasket degradation is one of the most common sources of coolant and oil leaks in Sea-Doo 580 and 611 powerheads—and once seals fail, internal corrosion accelerates rapidly. The WINDEROSA Complete Gasket Kit eliminates guesswork by bundling every...PD811429- SKU:
- PD811429
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- COMPLETE
- UNITS:
- SET
$94.92 -
WINDEROSA Complete Gasket Kit - Sea-Doo 720 611204
WINDEROSA
$98.00Engine gasket failure doesn't just cost you performance—it costs you time and money. A complete gasket kit ensures every critical seal in your Sea-Doo 720 maintains proper compression, prevents oil leakage, and keeps your engine running at peak...PD811432- SKU:
- PD811432
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- SET
- PRODUCT NAME:
- GASKET SET
- TYPE:
- COMPLETE
$98.00 -
WINDEROSA Complete Gasket Kit - Yamaha SJ/VXR/WR3 611119
WINDEROSA
$103.88Engine gasket degradation is inevitable—worn seals lead to oil leaks, compression loss, and catastrophic failure. The WINDEROSA Complete Gasket Kit provides comprehensive OEM-grade sealing for your Yamaha SJ/VXR/WR3, eliminating guesswork and potential...PD811500- SKU:
- PD811500
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- SET
$103.88
