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
-
PROX Top End Gasket Set - Honda XR650L 35.1623
PROX
$64.95Top End Gasket Set - Honda XR650L Offer any gasket you need for a top-end rebuild, Precision engineering and the use of first-class materials guarantee the quality you demand09347118- SKU:
- 09347118
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
$64.95 -
PROX Top End Gasket Set - Kawasaki 35.4429
PROX
$59.95Top End Gasket Set - Kawasaki Offer any gasket you need for a top-end rebuild, Precision engineering and the use of first-class materials guarantee the quality you demand09347140- SKU:
- 09347140
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
PROX Top End Gasket Set - Husqvarna/Gas Gas/KTM 35.6216
PROX
$69.95Top End Gasket Set - 35.6216 Comprehensive gasket set for top-end rebuilds Compatible with Husqvarna, Gas Gas, and KTM models Precision-engineered for optimal fit and performance Manufactured with high-quality materials for durability ...09347147- SKU:
- 09347147
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$69.95 -
PROX Top End Gasket Set - Husqvarna/Gas Gas/KTM 35.6319
PROX
$89.95Top End Gasket Set - 35.6319 Complete gasket set for top-end rebuilds on Husqvarna, Gas Gas, and KTM models. Crafted from high-quality materials for durability and performance. Precision-engineered for a perfect fit and optimal sealing. ...09347151- SKU:
- 09347151
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
$89.95 -
PROX Top End Gasket Set - Sherco 35.7334
PROX
$54.95Top End Gasket Set - Sherco Offer any gasket you need for a top-end rebuild, Precision engineering and the use of first-class materials guarantee the quality you demand09347152- SKU:
- 09347152
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
$54.95Qty in Cart: 0Quantity:Price:$54.95Subtotal: -
PROX Gasket Kit - Complete - Yamaha 34.2221
PROX
$74.95Gasket Kit - Complete - Yamaha Includes all necessary top-quality gaskets, rubber parts and valve stem seals to rebuild top-end and complete engines, respectively09345547- SKU:
- 09345547
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$74.95Qty in Cart: 0Quantity:Price:$74.95Subtotal: -
PROX Gasket Kit - Complete - Suzuki/Kawasaki 34.4021
PROX
$59.95Gasket Kit - Complete - 34.4021 Comprehensive kit for rebuilding top-end and complete engines Includes high-quality gaskets and rubber components Features durable valve stem seals for optimal performance Compatible with Suzuki and...09345587- SKU:
- 09345587
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$59.95 -
PROX Gasket Kit - Complete - Suzuki/Kawasaki 34.4100
PROX
$44.95Gasket Kit - Complete - Suzuki/Kawasaki 34.41 Comprehensive kit for top-end and complete engine rebuilds Includes high-quality gaskets and rubber components Features durable valve stem seals for optimal performance Designed specifically...09345589- SKU:
- 09345589
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$44.95 -
PROX Top End Gasket Set - Honda CRF450R 35.1429
PROX
$104.95Top End Gasket Set - Honda CRF450R Offer any gasket you need for a top-end rebuild, Precision engineering and the use of first-class materials guarantee the quality you demand09345683- SKU:
- 09345683
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$104.95 -
ATHENA Water Pump Gasket Kit - Yamaha P400485475014
ATHENA
$54.95Water Pump Gasket Kit - Yamaha Includes water pump gasket, clutch cover gasket, water pump shaft oil seals, washers and bearings when applicable, Kit contents will vary slightly based on application09347194- SKU:
- 09347194
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$54.95 -
MOOSE OFFROAD Gasket Clutch Inner - Honda 816353MSE
MOOSE OFFROAD
$16.86Gasket Clutch Inner - 816353MSE Precision-engineered for optimal performance Designed specifically for Honda models Reliable replacement for worn or damaged clutches Seals ignition covers to prevent leaks Manufactured in the U.S.A...09347195- SKU:
- 09347195
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$16.86 -
MOOSE OFFROAD Ignition Cover Gasket - Honda 816345MSE
MOOSE OFFROAD
$12.79Ignition Cover Gasket - Honda These individually sold gaskets are great when replacing a clutch or to seal a leaky ignition cover, Made in the USA09347196- SKU:
- 09347196
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$12.79 -
MOOSE OFFROAD Gasket Kit with Oil Seal - Honda 8110043MSE
MOOSE OFFROAD
$106.80Gasket Kit with Oil Seal - Honda Sets include all gaskets and oil seals necessary to rebuild the entire engine and transmission, Valve seals also included, Includes formed rubber valve cover gaskets, Does not include mechanical water pump seal, Made in...09347197- SKU:
- 09347197
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$106.80 -
MOOSE OFFROAD Complete Motor Gasket Kit - Honda 808213MSE
MOOSE OFFROAD
$160.80Complete Motor Gasket Kit - 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...09347198- SKU:
- 09347198
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
$160.80 -
MOOSE OFFROAD Top End Gasket Kit - Honda 8100042MSE
MOOSE OFFROAD
$100.61Top End Gasket Kit - Honda 8100042MSE Cost-effective solution for all gasket and seal needs High-tech materials ensure superior reliability and performance Designed for durability and precise fit for engine and transmission rebuilds ...09347199- SKU:
- 09347199
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$100.61 -
MOOSE OFFROAD Complete Gasket Kit - Yamaha 8080028MSE
MOOSE OFFROAD
$146.96Complete Gasket Kit - Yamaha 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...09347200- SKU:
- 09347200
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
$146.96 -
MOOSE OFFROAD Complete Gasket Kit - Honda 8080040MSE
MOOSE OFFROAD
$81.75Complete Gasket Kit - 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...09347201- SKU:
- 09347201
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$81.75 -
MOOSE OFFROAD Top End Gasket Kit - Suzuki 8100037MSE
MOOSE OFFROAD
$20.15Top End Gasket Kit - 8100037MSE Cost-effective solution for all your gasket and seal needs, significantly cheaper than OEM options. Crafted from high-tech materials ensuring exceptional reliability and performance. Rebuild your engine and...09347202- SKU:
- 09347202
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$20.15 -
MOOSE OFFROAD Exhaust Gasket Kit - Yamaha 823200MSE
MOOSE OFFROAD
$27.64Exhaust Gasket Kit - Yamaha KTM 4-stroke kit includes header gasket and replacement springs, 2-stroke kit includes O-rings, springs, washer and gasket (where applicable), 4-stroke kit contains header gasket09347189- SKU:
- 09347189
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$27.64 -
MOOSE OFFROAD Exhaust Gasket Kit - Yamaha 823201MSE
MOOSE OFFROAD
$15.00Exhaust Gasket Kit - 823201MSE Compatible with Yamaha and KTM 4-stroke engines. Includes a high-quality header gasket for optimal sealing. 2-stroke kit features O-rings, springs, and washers for comprehensive coverage. Designed to...09347190- SKU:
- 09347190
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$15.00
