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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MOOSE RACING Complete Gasket Set - Honda 8080039MSE
MOOSE RACING
$135.21Complete Gasket Set - Honda Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as each set is...09347463- SKU:
- 09347463
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$135.21 -
MOOSE RACING Complete Gasket Set - Honda 8080046MSE
MOOSE RACING
$184.65Complete Gasket Set - Honda Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as each set is...09347464- SKU:
- 09347464
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
$184.65 -
MOOSE RACING Inner Clutch Gasket 816829MSE
MOOSE RACING
$18.21Inner Clutch Gasket 816829MSE Essential component for clutch replacement or ignition cover sealing Manufactured in the U.S.A. for superior quality Designed for a precise fit, ensuring optimal performance Durable materials resist wear and...09347466- SKU:
- 09347466
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$18.21 -
MOOSE RACING Ignition Cover Gasket - Kawasaki 816830MSE
MOOSE RACING
$9.46Ignition Cover Gasket - Kawasaki These individually sold gaskets are great when replacing a clutch or to seal a leaky ignition cover, Made in the USA09347467- SKU:
- 09347467
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$9.46 -
MOOSE RACING Inner Clutch Gasket 816840MSE
MOOSE RACING
$68.42Inner Clutch Gasket Used to replace a clutch or to seal a leaky ignition cover, Made in the U.S.A.09347468- SKU:
- 09347468
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$68.42 -
MOOSE RACING Gasket Material - Green - 2 Pack - .032" 403-5011
MOOSE RACING
$34.29Gasket Material - Green - 2 Pack - .032" Comes with two sheets of gasket material * 11.5* wide x 15.5* long, Material is premium compressed sheet, manufactured with aramid and other synthetic fibers and uses an NBR (Nitrile Butadiene Rubber) binder,...09347527- SKU:
- 09347527
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$34.29 -
PROX Water Pump Rebuild Kit - Honda 57.1417
PROX
$54.95Water Pump Rebuild Kit - 57.1417 High-quality materials ensure durability and reliability. Comprehensive repair kit includes all essential components. Includes gaskets, O-rings, bearings, and seals for complete restoration. Designed...09347755- SKU:
- 09347755
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
$54.95 -
PROX Water Pump Rebuild Kit - Kawasaki 57.4327
PROX
$54.95Water Pump Rebuild Kit - 57.4327 High-quality materials for durability and reliability Complete kit includes gaskets, O-rings, bearings, and seals Designed specifically for Kawasaki water pumps Easy installation for quick repairs ...09347756- SKU:
- 09347756
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$54.95 -
PROX Water Pump Rebuild Kit - Husqvarna/KTM 57.6327
PROX
$44.95Water Pump Rebuild Kit - Husqvarna/KTM Constructed of high-quality materials, Repair kits include all necessary gaskets, O-rings, bearings and seals09347757- SKU:
- 09347757
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
$44.95 -
PROX Water Pump Rebuild Kit - KTM 57.6407
PROX
$39.95Water Pump Rebuild Kit - KTM Constructed of high-quality materials, Repair kits include all necessary gaskets, O-rings, bearings and seals09347758- SKU:
- 09347758
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
$39.95 -
PROX Water Pump Rebuild Kit - Husqvarna/KTM 57.6416
PROX
$64.95Water Pump Rebuild Kit - Husqvarna/KTM Constructed of high-quality materials, Repair kits include all necessary gaskets, O-rings, bearings and seals09347759- SKU:
- 09347759
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$64.95 -
PROX Top End Gasket Set - Honda 35.1352
PROX
$89.95Top End Gasket Set - Honda Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347760- SKU:
- 09347760
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$89.95 -
PROX Top End Gasket Set - Honda 35.1421
PROX
$89.95Top End Gasket Set - Honda Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347761- SKU:
- 09347761
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$89.95 -
PROX Top End Gasket Set - Honda 35.1423
PROX
$89.95Top End Gasket Set - 35.1423 Complete set for comprehensive top-end rebuilds Manufactured to ProX specifications for superior quality Ensures optimal sealing for enhanced engine performance Compatible with Honda models for a perfect fit ...09347762- SKU:
- 09347762
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$89.95 -
PROX Top End Gasket Set - Yamaha 35.2232
PROX
$29.95Top End Gasket Set - 35.2232 Comprehensive set for complete top-end rebuilds Engineered to meet ProX specifications for optimal performance Manufactured from high-quality materials for durability Ensures reliable sealing to prevent...09347763- SKU:
- 09347763
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
$29.95 -
PROX Top End Gasket Set - Yamaha 35.2450
PROX
$69.95Top End Gasket Set - 35.245 Complete set for Yamaha top-end rebuilds Includes all necessary gaskets for a comprehensive overhaul Manufactured to ProX specifications for superior quality Ensures optimal sealing and performance Durable...09347764- SKU:
- 09347764
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$69.95 -
PROX Top End Gasket Set - Yamaha 35.2453
PROX
$84.95Top End Gasket Set - Yamaha Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347765- SKU:
- 09347765
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$84.95 -
PROX Top End Gasket Set - Suzuki 35.3349
PROX
$69.95Top End Gasket Set - Suzuki Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347767- SKU:
- 09347767
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$69.95 -
PROX Top End Gasket Set - Kawasaki 35.4350
PROX
$74.95Top End Gasket Set - Kawasaki Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347768- SKU:
- 09347768
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$74.95 -
PROX Top End Gasket Set - Kawasaki 35.4431
PROX
$94.95Top End Gasket Set - 35.4431 Complete gasket set for top-end rebuilds Precision-engineered to meet ProX specifications Manufactured using high-quality materials for durability Ensures optimal sealing performance Compatible with...09347770- SKU:
- 09347770
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$94.95
