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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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 with precision engineering and domestic manufacturing,...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 persistent oil seep around the ignition cover, this...09346921- SKU:
- 09346921
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$7.31 -
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 delivering every gasket, O-ring, and valve seal your Yamaha...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 Set eliminates guesswork by bundling every essential...09346925- SKU:
- 09346925
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$67.11 -
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 guesswork by bundling every critical seal your Yamaha engine...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 and gaskets at a fraction of the cost, giving you the...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 set gives you all the OEM-specification components...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 performance loss and potential engine damage. Keep your Yamaha...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 Kit delivers full engine and transmission coverage...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 preparing a high-compression build, the MOOSE OFFROAD...M810584- SKU:
- M810584
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$35.01 -
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 OEM performance specifications without the cost of...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 fraction of dealership pricing, giving you the...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 seals and gaskets at a fraction of the cost, so you can...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 refreshing a tired engine or maximizing compression on a...M810256- SKU:
- M810256
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
$36.47 -
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 every gasket, O-ring, and seal you'll need into one...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 durability and accuracy at a fraction of factory cost,...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 restore your Honda's cooling system to factory...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 gasket needed to restore your pump to factory specifications...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 assembly, this MOOSE OFFROAD rebuild kit gives you a...09346695- SKU:
- 09346695
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
$46.86 -
MOOSE OFFROAD Complete Gasket Set 8080038MSE
MOOSE OFFROAD
$92.81A complete engine and transmission rebuild demands precision—and gasket failure is the fastest way to undo all your work. This MOOSE OFFROAD Complete Gasket Set eliminates guesswork by delivering every seal, O-ring, and valve gasket you need in one kit,...09346888- SKU:
- 09346888
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$92.81
