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!
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- Price
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MOOSE OFFROAD Gasket Clutch Inner - Honda 332003MSE
MOOSE OFFROAD
$21.87A failing clutch inner gasket compromises your Honda's seal integrity, leading to oil weeping, contamination, and potential clutch slip. This MOOSE OFFROAD replacement restores a factory-tight seal...09346908- SKU:
- 09346908
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$21.87 -
MOOSE OFFROAD Outer Clutch Cover Gasket - Honda 819160MSE
MOOSE OFFROAD
$7.31A failing outer clutch cover gasket compromises engine sealing and invites oil leakage that accelerates wear on adjacent components. Whether you're doing a full clutch replacement or addressing a...09346921- SKU:
- 09346921
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$7.31Qty in Cart: 0Quantity:Price:$7.31Subtotal: -
MOOSE OFFROAD Complete Gasket Set - Yamaha 8080037MSE
MOOSE OFFROAD
$146.11A complete engine rebuild demands precision at every seal and gasket—any leak or failure compromises performance and reliability. This MOOSE OFFROAD Complete Gasket Set eliminates guesswork by...09346924- SKU:
- 09346924
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
$146.11 -
MOOSE OFFROAD Complete Gasket Set 808616MSE
MOOSE OFFROAD
$67.11A complete engine or transmission rebuild demands precision at every seal and gasket—one leak or premature failure compromises hours of work and thousands in parts. This MOOSE OFFROAD Complete Gasket...09346925- SKU:
- 09346925
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$67.11Qty in Cart: 0Quantity:Price:$67.11Subtotal: -
MOOSE OFFROAD Complete Gasket Set - Yamaha 808691MSE
MOOSE OFFROAD
$128.89A complete engine rebuild demands precision sealing at every junction—missed gaskets mean oil leaks, compression loss, and premature failure. This MOOSE OFFROAD Complete Gasket Set eliminates...09346926- SKU:
- 09346926
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$128.89 -
MOOSE OFFROAD Top End Gasket Kit - Yamaha 8100031MSE
MOOSE OFFROAD
$87.56A top-end rebuild demands precision-fit gaskets and seals that won't fail under load—and OEM replacements come with premium pricing. The MOOSE OFFROAD Top End Gasket Kit delivers OEM-quality seals...09346927- SKU:
- 09346927
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$87.56 -
MOOSE OFFROAD Gasket Set with Seals - Yamaha 811691MSE
MOOSE OFFROAD
$179.43A complete engine and transmission rebuild demands precision sealing at every joint—missed gaskets or degraded seals lead to oil leaks, compression loss, and premature wear. This MOOSE OFFROAD gasket...09346928- SKU:
- 09346928
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$179.43 -
MOOSE OFFROAD Gasket Clutch Inner - Yamaha 816097MSE
MOOSE OFFROAD
$11.51A worn or compromised clutch gasket will cost you reliability on the track or trail. This MOOSE Offroad gasket seals your ignition cover and clutch assembly against oil leakage, preventing...09346931- SKU:
- 09346931
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$11.51 -
MOOSE OFFROAD Complete Motor Gasket Kit - Suzuki 808547MSE
MOOSE OFFROAD
$67.01A complete engine rebuild demands precision gaskets and seals that won't fail under load—OEM kits come with premium pricing that doesn't match the performance. The MOOSE OFFROAD Complete Motor Gasket...09340132- SKU:
- 09340132
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$67.01 -
MOOSE OFFROAD Top End Gasket Kit - Suzuki 810584MSE
MOOSE OFFROAD
$35.01A top-end rebuild demands precision gaskets and seals that maintain compression and prevent oil weeping—this kit delivers everything you need in one box. Whether you're refreshing a stock engine or...M810584- SKU:
- M810584
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$35.01 -
MOOSE OFFROAD Top End Gasket Kit - Yamaha 810659MSE
MOOSE OFFROAD
$33.51A top-end rebuild demands precision gaskets and seals that won't fail under compression and heat cycling—cheap or worn gaskets lead to oil leaks, loss of compression, and engine damage. The MOOSE...M810662- SKU:
- M810662
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
$33.51Qty in Cart: 0Quantity:Price:$33.51Subtotal: -
MOOSE OFFROAD Water Pump Rebuild Kit - Honda 821989MSE
MOOSE OFFROAD
$53.98Water pump failure doesn't just leave you stranded—it risks catastrophic engine damage from overheating. This MOOSE OFFROAD rebuild kit gives you everything needed to restore your Honda water pump to...09345910- SKU:
- 09345910
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$53.98 -
MOOSE OFFROAD Motor Gasket Kit with Oil Seal - Kawasaki 811470MSE
MOOSE OFFROAD
$75.98Engine and transmission rebuilds demand precision—failed gaskets and seals compromise performance and invite costly damage. The MOOSE OFFROAD Motor Gasket Kit delivers OEM-equivalent reliability at a...M811470- SKU:
- M811470
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
$75.98 -
MOOSE OFFROAD Motor Gasket Kit with Oil Seal - Suzuki 811548MSE
MOOSE OFFROAD
$81.49A complete engine and transmission rebuild demands precision—and OEM gasket kits come with OEM pricing. The MOOSE OFFROAD Motor Gasket Kit eliminates that compromise, delivering genuine OEM-quality...M811548- SKU:
- M811548
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$81.49 -
MOOSE OFFROAD Top End Gasket Kit - Honda 810256MSE
MOOSE OFFROAD
$36.47A complete top-end gasket kit is essential for any engine rebuild, and this MOOSE OFFROAD solution delivers all necessary seals and gaskets in one package with precision engineering. Whether you're...M810256- SKU:
- M810256
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
$36.47Qty in Cart: 0Quantity:Price:$36.47Subtotal: -
MOOSE OFFROAD Top End Gasket Kit - Honda 810267MSE
MOOSE OFFROAD
$84.61A top-end gasket kit is essential when rebuilding or refreshing your Honda engine—worn seals and gaskets are the primary source of oil leaks and compression loss. This MOOSE OFFROAD kit consolidates...M810267- SKU:
- M810267
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$84.61 -
MOOSE OFFROAD Complete Motor Gasket Kit - Kawasaki/Suzuki 808416MSE
MOOSE OFFROAD
$19.14A complete engine and transmission rebuild demands precision-fit gaskets that won't fail under load—and OEM pricing shouldn't drain your budget. The MOOSE OFFROAD Complete Motor Gasket Kit delivers...09340484- SKU:
- 09340484
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$19.14 -
MOOSE OFFROAD Water Pump Rebuild Kit - Honda 8210012MSE
MOOSE OFFROAD
$60.31A failing water pump can lead to catastrophic engine damage, and rebuilding is a fraction of the cost of replacement. The MOOSE OFFROAD Water Pump Rebuild Kit gives you every wear item needed to...09346693- SKU:
- 09346693
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$60.31 -
MOOSE OFFROAD Water Pump Rebuild Kit - Gas Gas/Husqvarna/KTM 8210024MSE
MOOSE OFFROAD
$66.95A failing water pump can leave you stranded mid-ride or cause catastrophic engine damage that sidelines your machine for weeks. This MOOSE OFFROAD rebuild kit gives you every seal, bearing, and...09346694- SKU:
- 09346694
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$66.95 -
MOOSE OFFROAD Water Pump Rebuild Kit - Yamaha 8210025MSE
MOOSE OFFROAD
$46.86A failing water pump can spell disaster for your engine—overheating, bearing seizure, and catastrophic coolant loss are all real consequences of neglect. Rather than replacing the entire pump...09346695- SKU:
- 09346695
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$46.86
