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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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 -
MOOSE OFFROAD Exhaust Gasket Kit - KTM 823195MSE
MOOSE OFFROAD
$16.58Exhaust Gasket Kit - KTM 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 gasket09347191- SKU:
- 09347191
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$16.58 -
MOOSE OFFROAD Exhaust Gasket Kit - Beta 823205MSE
MOOSE OFFROAD
$3.99Exhaust Gasket Kit - Beta 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 gasket09347193- SKU:
- 09347193
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$3.99 -
VINTCO Top End Gasket Kit - Honda KTE010
VINTCO
$35.95Top End Gasket Kit - Honda KTE010 Engineered with advanced materials for superior durability and performance. Designed for a perfect fit, matching or exceeding OEM specifications. Comprehensive kit includes all essential gaskets for top end...09347223- SKU:
- 09347223
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$35.95 -
VINTCO Top End Gasket Kit - Honda KTE008
VINTCO
$37.95Top End Gasket Kit - Honda Gaskets are made with modern materials and manufacturing techniques to ensure an as good or better than OEM fitment and performance, Top end gaskets kit have all of the critical gaskets you need to complete your top end build...09347225- SKU:
- 09347225
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$37.95 -
VINTCO Top End Gasket Kit - Suzuki KTE024
VINTCO
$30.95Top End Gasket Kit - Suzuki Gaskets are made with modern materials and manufacturing techniques to ensure an as good or better than OEM fitment and performance, Top end gaskets kit have all of the critical gaskets you need to complete your top end build...09347226- SKU:
- 09347226
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$30.95 -
VINTCO Top End Gasket Kit - Yamaha KTE042
VINTCO
$38.95Top End Gasket Kit - Yamaha KTE042 High-quality gaskets designed for Yamaha engines. Manufactured using modern materials for superior durability. Ensures an OEM fitment for optimal performance. Complete kit includes all essential gaskets...09347227- SKU:
- 09347227
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$38.95 -
VINTCO Top End Gasket Kit - Yamaha KTE043
VINTCO
$51.95Top End Gasket Kit - Yamaha Gaskets are made with modern materials and manufacturing techniques to ensure an as good or better than OEM fitment and performance, Top end gaskets kit have all of the critical gaskets you need to complete your top end build...09347229- SKU:
- 09347229
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$51.95 -
VINTCO Top End Gasket Kit - Suzuki KTE023
VINTCO
$22.95Top End Gasket Kit - Suzuki Gaskets are made with modern materials and manufacturing techniques to ensure an as good or better than OEM fitment and performance, Top end gaskets kit have all of the critical gaskets you need to complete your top end build...09347230- SKU:
- 09347230
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$22.95
