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
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- Price
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COMETIC Top End Gasket Kit - 88 mm - KTM/Husqvarna/Gas Gas C3810
COMETIC
$102.95Top End Gasket Kit - 88 mm - KTM/Husqvarna/Gas Gas Top end gasket kit includes correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load...09347862- SKU:
- 09347862
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$102.95 -
COMETIC Top End Gasket Kit - 97 mm - Yamaha C3813
COMETIC
$87.95Top End Gasket Kit - 97 mm - Yamaha Top end gasket kit includes correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the...09347863- SKU:
- 09347863
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$87.95 -
COMETIC Top End Gasket Kit - KTM C3818
COMETIC
$47.95Top End Gasket Kit - KTM Top end gasket kit includes correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket sealing...09347864- SKU:
- 09347864
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$47.95 -
COMETIC Top End Gasket Kit - 47 mm - Kawasaki/Suzuki C7682
COMETIC
$28.95Top End Gasket Kit - 47 mm - Kawasaki/Suzuki Top end gasket kit includes correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across...09347866- SKU:
- 09347866
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$28.95 -
COMETIC Top End Gasket Kit - 98 mm - Yamaha C3178-EST
COMETIC
$90.95Top End Gasket Kit - 98 mm - Yamaha Top end gasket kit includes correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the...09347825- SKU:
- 09347825
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$90.95 -
COMETIC Top End Gasket Kit - 99 mm - Yamaha C3279-EST
COMETIC
$90.95Top End Gasket Kit - 99 mm - Yamaha Top end gasket kit includes correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the...09347829- SKU:
- 09347829
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$90.95 -
VERTEX Top End Gasket Kit - Honda 810267
VERTEX
$79.47VERTEX Top End Gasket Kit - 810267 Designed specifically for Honda engines for a perfect fit. Includes all necessary gaskets for a complete top end rebuild. Made from high-quality materials for durability and reliability. Engineered to...09347999- SKU:
- 09347999
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$79.47 -
VERTEX Top End Gasket Kit - Husaberg/Husqvarna/KTM 810333
VERTEX
$44.40VERTEX Top End Gasket Kit - Husaberg/Husqvarna/KTM09348000- SKU:
- 09348000
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$44.40 -
VERTEX Top End Gasket Kit - Honda 810262
VERTEX
$72.27VERTEX Top End Gasket Kit - Honda09348001- SKU:
- 09348001
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$72.27 -
VERTEX Top End Gasket Kit - KTM 810328
VERTEX
$75.44VERTEX Top End Gasket Kit - 810328 High-quality gasket kit designed for KTM models. Includes all necessary gaskets for a complete top-end rebuild. Engineered for optimal sealing and performance. Durable materials withstand high...09348004- SKU:
- 09348004
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$75.44 -
VERTEX Top End Gasket Kit - Yamaha 810676
VERTEX
$64.61VERTEX Top End Gasket Kit - Yamaha09348005- SKU:
- 09348005
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$64.61 -
VERTEX Top End Gasket Kit - Yamaha 810677
VERTEX
$64.61VERTEX Top End Gasket Kit - 810677 High-quality gasket kit designed specifically for Yamaha engines. Includes all necessary gaskets for a complete top-end rebuild. Durable materials ensure a reliable seal and long-lasting performance. ...09348006- SKU:
- 09348006
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$64.61 -
VERTEX Top End Gasket Kit - Honda 8100000
VERTEX
$75.56VERTEX Top End Gasket Kit - Honda09348007- SKU:
- 09348007
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$75.56 -
VERTEX Top End Gasket Kit - Suzuki 810505
VERTEX
$20.55VERTEX Top End Gasket Kit - 810505 High-quality gaskets designed specifically for Suzuki engines. Engineered for optimal sealing and performance under extreme conditions. Includes all necessary components for a complete top-end rebuild. ...09348010- SKU:
- 09348010
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$20.55 -
VERTEX Top End Gasket Kit - Husaberg/Husqvarna/KTM 810335
VERTEX
$37.66VERTEX Top End Gasket Kit - 810335 High-quality gasket kit designed for optimal sealing performance. Compatible with Husaberg, Husqvarna, and KTM models. Durable materials ensure longevity and reliability under extreme conditions. Easy...09348011- SKU:
- 09348011
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$37.66 -
VERTEX Top End Gasket Kit - Honda 810241
VERTEX
$48.34VERTEX Top End Gasket Kit - 810241 High-quality gasket kit designed specifically for Honda engines. Includes all necessary gaskets for a complete top-end rebuild. Made from durable materials to ensure a reliable seal and long-lasting...09348015- SKU:
- 09348015
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$48.34 -
VERTEX Top End Gasket Kit - Yamaha 810690
VERTEX
$50.55VERTEX Top End Gasket Kit - 810690 High-quality gasket kit designed specifically for Yamaha engines. Includes all necessary gaskets for a complete top-end rebuild. Precision-engineered for optimal performance and durability. Resistant to...09348017- SKU:
- 09348017
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$50.55 -
VERTEX Top End Gasket Kit - Yamaha 810614
VERTEX
$22.87VERTEX Top End Gasket Kit - 810614 High-quality gasket kit designed specifically for Yamaha engines. Complete set includes all necessary gaskets for top-end repairs. Durable materials ensure long-lasting performance and reliability. Easy...09348022- SKU:
- 09348022
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
$22.87 -
VERTEX Top End Gasket Kit - Yamaha 8100025
VERTEX
$74.10VERTEX Top End Gasket Kit - 8100025 High-quality gasket kit designed specifically for Yamaha engines Includes all necessary gaskets for a complete top end rebuild Durable materials ensure long-lasting performance and reliability ...09348023- SKU:
- 09348023
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$74.10 -
VERTEX Top End Gasket Kit - KTM 810309
VERTEX
$30.15VERTEX Top End Gasket Kit - 810309 High-quality gasket kit designed specifically for KTM models. Ensures a perfect seal for optimal engine performance. Durable materials resistant to heat and wear. Easy installation with all necessary...09348028- SKU:
- 09348028
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$30.15
