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
-
MOOSE RACING Ignition Cover Gasket 816170
MOOSE RACING
$11.22A failing ignition cover gasket compromises your engine's seal integrity, risking oil seepage and potential ignition system damage—especially critical in high-performance and racing applications where reliability is non-negotiable. The MOOSE Racing...09346961- SKU:
- 09346961
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$11.22 -
MOOSE RACING Clutch Outer Gasket - Suzuki 816185
MOOSE RACING
$11.73A worn or damaged clutch outer gasket compromises your clutch cover seal, leading to oil leakage and potential drivetrain failure. This OEM-equivalent MOOSE RACING gasket restores a critical seal point and ensures your clutch assembly maintains proper...09346962- SKU:
- 09346962
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- CLUTCH OUTER
$11.73 -
MOOSE RACING Ignition Cover Gasket 816239
MOOSE RACING
$10.84An ignition cover gasket that fails prematurely wastes time and risks engine contamination. The MOOSE RACING Ignition Cover Gasket delivers OEM-quality sealing at a fraction of the cost, whether you're rebuilding from the ground up or addressing a...09342130- SKU:
- 09342130
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$10.84 -
MOOSE RACING Complete Motor Gasket Kit - CRF250 808285
MOOSE RACING
$154.95A complete engine rebuild demands precision gaskets and seals that won't compromise reliability or break your budget. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-quality components at a fraction of the cost, allowing you to restore your...09342201- SKU:
- 09342201
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$154.95Qty in Cart: 0Quantity:Price:$154.95Subtotal: -
MOOSE RACING Complete Motor Gasket Kit - 350SXF 808339
MOOSE RACING
$140.62A complete engine and transmission rebuild demands precision-engineered gaskets and seals that won't compromise reliability or cost you a fortune. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-quality components at a fraction of the price,...09342202- SKU:
- 09342202
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- COMPLETE
$140.62Qty in Cart: 0Quantity:Price:$140.62Subtotal: -
MOOSE RACING Complete Motor Gasket Kit - RMZ250 808567
MOOSE RACING
$141.67A complete engine and transmission rebuild demands precision gaskets and seals that won't fail under load. The MOOSE RACING Complete Motor Gasket Kit eliminates guesswork by providing every gasket, o-ring, and valve seal you need in one package—all...09342203- SKU:
- 09342203
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$141.67 -
MOOSE RACING Complete Motor Gasket Kit - YZ450F 808689
MOOSE RACING
$153.37A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise reliability or performance. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-quality components at a fraction of factory pricing, eliminating...09342204- SKU:
- 09342204
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$153.37Qty in Cart: 0Quantity:Price:$153.37Subtotal: -
MOOSE RACING Top End Gasket Kit - CRF250 810285
MOOSE RACING
$73.09When you're rebuilding a CRF250 top end, you need gaskets and seals that maintain proper compression and prevent oil leakage under sustained load. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals at a fraction of the cost, so you can...09342205- SKU:
- 09342205
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
$73.09 -
MOOSE RACING Top End Gasket Kit - 350SXF 810339
MOOSE RACING
$97.12A top-end rebuild demands precision gasket sealing—any leak compromises compression, performance, and engine longevity. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals at a fraction of the cost, with every component engineered for accurate...09342206- SKU:
- 09342206
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
$97.12 -
MOOSE RACING Exhaust Gasket Kit 823155
MOOSE RACING
$21.87Exhaust gasket degradation is one of the most common sources of performance loss and emissions leaks in high-performance engines. A quality gasket kit ensures a perfect seal between exhaust manifolds and headers, preventing power-robbing blow-by and...09345336- SKU:
- 09345336
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
$21.87 -
MOOSE RACING Complete Motor Gasket Kit - TW200 808642
MOOSE RACING
$77.38A complete engine and transmission rebuild demands precision gaskets and seals that won't fail under load. The MOOSE RACING Complete Motor Gasket Kit eliminates the guesswork—and the cost of sourcing individual OEM components—by bundling everything you...09344785- SKU:
- 09344785
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- ENGINE
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$77.38 -
MOOSE RACING Top End Gasket - KX125 03 810430
MOOSE RACING
$38.67When you're rebuilding a KX125 top end, you need gaskets and seals that won't let you down—especially if you're running higher compression or replacing a piston. The MOOSE RACING Top End Gasket Set gives you every component required for a complete,...09340072- SKU:
- 09340072
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
$38.67 -
MOOSE RACING Top End Gasket - KLX/DRZ110 810415
MOOSE RACING
$38.72A top-end rebuild demands precision gaskets and seals that won't compromise engine integrity or cost you a fortune. The MOOSE RACING gasket set eliminates the need to source OEM parts at premium prices while delivering the same durability and accuracy...09340073- SKU:
- 09340073
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- TOP END
$38.72 -
MOOSE RACING Top End Gasket - DRZ125 810531
MOOSE RACING
$35.01A top-end rebuild demands precision gaskets and seals that won't fail under racing conditions or high-mileage riding. This Moose Racing gasket set eliminates the guesswork and expense of sourcing individual components, giving you every seal and gasket...09340074- SKU:
- 09340074
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
$35.01 -
MOOSE RACING Top End Gasket - YZ450F/YFZ 810677
MOOSE RACING
$68.81A top-end rebuild demands precision gaskets and seals that won't compromise your engine's integrity or your wallet. The MOOSE RACING gasket set delivers OEM-quality performance at a fraction of the cost, with every component engineered for accurate fit...09340081- SKU:
- 09340081
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$68.81 -
VESRAH Exhaust Gasket VE-3003
VESRAH
$50.98Exhaust gasket failure leads to performance loss, increased emissions, and costly heat damage to surrounding components. The VESRAH VE-3003 delivers a reliable, cost-effective seal that maintains back-pressure integrity and prevents exhaust leaks across...VX3003- SKU:
- VX3003
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- EXHAUST
- UNITS:
- 10 PACK
$50.98 -
VESRAH Exhaust Gasket VE-4004
VESRAH
$55.95Exhaust leaks compromise both performance and emissions control, robbing your engine of power while creating unwanted noise and heat. The VESRAH VE-4004 exhaust gasket pack delivers reliable sealing across multiple applications, preventing costly damage...VX4004- SKU:
- VX4004
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- EXHAUST
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$55.95 -
VESRAH Top End Gasket Kit - Yamaha 50 VG-6021
VESRAH
$13.74A top-end rebuild demands precision gaskets that seal properly under pressure—compromising here risks compression loss and oil leakage that'll sideline your bike. The VESRAH VG-6021 kit includes every gasket, o-ring, and valve guide oil seal you need for...09342896- SKU:
- 09342896
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
$13.74 -
VESRAH Complete Gasket Kit - XL/R 70/80 VG-1034
VESRAH
$59.95A complete engine rebuild demands precision at every seal and gasket interface—any leak or failure will compromise performance and reliability. The VESRAH VG-1034 Complete Gasket Kit delivers OEM-equivalent sealing across all critical engine passages,...VG1034- SKU:
- VG1034
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
$59.95Qty in Cart: 0Quantity:Price:$59.95Subtotal: -
VESRAH Complete Gasket Kit - DT/MX/YZ125 VG-265
VESRAH
$26.25A complete engine rebuild demands precision sealing—and this VESRAH gasket kit delivers exactly what you need to restore your DT/MX/YZ125 to factory specifications. Worn or compromised gaskets are a common source of compression loss, oil weeping, and...VG265- SKU:
- VG265
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
$26.25
