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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VINTCO Top End Gasket Kit - Honda KTE068
VINTCO
$26.95Top 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...09347228- SKU:
- 09347228
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$26.95 -
VINTCO Top End Gasket Kit - Yamaha KTE044
VINTCO
$89.95Top 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...09347233- SKU:
- 09347233
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$89.95Qty in Cart: 0Quantity:Price:$89.95Subtotal: -
VINTCO Top End Gasket Kit - Honda KTE009
VINTCO
$36.95Top 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...09347235- SKU:
- 09347235
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$36.95Qty in Cart: 0Quantity:Price:$36.95Subtotal: -
VINTCO Engine Gasket Kit - Suzuki KEG051
VINTCO
$37.95Engine Gasket Kit - Suzuki Includes all critical gaskets required for the lower portion of the engine, Gaskets are manufactured from modern materials to ensure as good or better than OEM fitment and performance09347312- SKU:
- 09347312
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$37.95 -
VINTCO Engine Gasket Kit - Suzuki KEG062
VINTCO
$40.95Engine Gasket Kit - KEG062 Complete set of critical gaskets for the lower engine assembly Manufactured from high-quality, modern materials Ensures superior fitment and performance compared to OEM standards Designed specifically for...09347327- SKU:
- 09347327
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$40.95Qty in Cart: 0Quantity:Price:$40.95Subtotal: -
VINTCO Engine Gasket Kit - Suzuki KEG070
VINTCO
$45.95Engine Gasket Kit - Suzuki Includes all critical gaskets required for the lower portion of the engine, Gaskets are manufactured from modern materials to ensure as good or better than OEM fitment and performance09347334- SKU:
- 09347334
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$45.95 -
ATHENA Complete Gasket Kit - Honda P400210900323
ATHENA
$195.95Complete Gasket Kit - Honda Head gasket features rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core material features high spring-back and superior tensile strength, Revolutionary transparent coating guarantees...09347376- SKU:
- 09347376
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
$195.95Qty in Cart: 0Quantity:Price:$195.95Subtotal: -
ATHENA Top End Gasket Kit - Suzuki P400510600099
ATHENA
$72.95Top End Gasket Kit - Suzuki Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason, Kit includes a top-of-the line MLSS head gasket and two or more premium quality base gaskets of...09347508- SKU:
- 09347508
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$72.95Qty in Cart: 0Quantity:Price:$72.95Subtotal: -
Cylinder Works Big Bore Gasket Kit 80mm Bore Yamaha YZ250F 2019 CW21013G01
CYLINDER WORKS
$101.95Upgrade your Yamaha's performance with our high-quality Big Bore Gasket kit designed specifically for an 80.00 mm bore. This top-end gasket kit ensures a perfect seal, enhancing engine efficiency and durability. Ideal for enthusiasts seeking reliability...09347521- SKU:
- 09347521
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$101.95Qty in Cart: 0Quantity:Price:$101.95Subtotal: -
PROX Top End Gasket Set - Kawasaki 35.4351
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 sealing09347769- SKU:
- 09347769
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
$74.95 -
PROX Top End Gasket Set - Gas Gas/Husqvarna/KTM 35.6343
PROX
$89.95Top End Gasket Set - 35.6343 Complete gasket set for top-end rebuilds in Gas Gas, Husqvarna, and KTM models. Manufactured to ProX specifications for superior quality and reliability. Includes all necessary gaskets for a comprehensive engine...09347772- SKU:
- 09347772
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$89.95Qty in Cart: 0Quantity:Price:$89.95Subtotal: -
PROX Top End Gasket Set - Gas Gas/Husqvarna/KTM 35.6439
PROX
$94.95Top End Gasket Set - Gas Gas/Husqvarna/KTM Offer any gasket you need for a top-end rebuild, Manufactured by high quality factories to ProX specifications to ensure top quality sealing09347777- SKU:
- 09347777
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
$94.95 -
VERTEX Top End Gasket Kit - Gas Gas/Husqvarna/KTM 810991
VERTEX
$92.98VERTEX Top End Gasket Kit - 810991 High-quality gasket kit designed for Gas Gas, Husqvarna, and KTM models. Precision-engineered for a perfect fit and reliable performance. Includes all necessary gaskets for a complete top-end rebuild. ...09348014- SKU:
- 09348014
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$92.98 -
WINDEROSA Top End Gasket Kit - Kawasaki 440 610101
WINDEROSA
$46.75Includes bases and heads, along with intake and exhaust gaskets (only those nearest the block), Made in the U.S.A.PD812305- SKU:
- PD812305
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- TOP END
- UNITS:
- KIT
$46.75Qty in Cart: 0Quantity:Price:$46.75Subtotal: -
WINDEROSA Top End Gasket Kit - Kawasaki 550 610103
WINDEROSA
$50.03Includes bases and heads, along with intake and exhaust gaskets (only those nearest the block), Made in the U.S.A.PD812325- SKU:
- PD812325
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$50.03 -
WINDEROSA Top End Gasket Kit - Raider 701 610602
WINDEROSA
$66.62Includes bases and heads, along with intake and exhaust gaskets (only those nearest the block), Made in the U.S.A.PD812532- SKU:
- PD812532
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
$66.62Qty in Cart: 0Quantity:Price:$66.62Subtotal: -
WINDEROSA Gasket - Complete - JS800SXR 611409
WINDEROSA
$127.95WINDEROSA Gasket - Complete - JS800SXR09346560- SKU:
- 09346560
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- ENGINE
- UNITS:
- KIT
$127.95Qty in Cart: 0Quantity:Price:$127.95Subtotal: -
WINDEROSA Standard Bore Gasket Kit 810213
WINDEROSA
$62.95Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise, Nickel Silicon Carbide plated for...09341930- SKU:
- 09341930
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE SIZE METRIC:
- 66.00 MM
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- STANDARD
- TYPE:
- TOP END
- MATERIAL:
- NICKEL SILICON CARBIDE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$62.95Qty in Cart: 0Quantity:Price:$62.95Subtotal: -
WINDEROSA Gasket - Complete - JT1500 Ultra 611420
WINDEROSA
$362.94WINDEROSA Gasket - Complete - JT1500 Ultra09346564- SKU:
- 09346564
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- RIDING STYLE:
- WATERCRAFT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$362.94Qty in Cart: 0Quantity:Price:$362.94Subtotal: -
WINDEROSA Gasket Kit - Standard Bore 810373
WINDEROSA
$66.08Made in the U.S.A.09346009- SKU:
- 09346009
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE SIZE IMPERIAL:
- STANDARD
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CYLINDER
- UNITS:
- KIT
$66.08
