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
-
ATHENA Top End Gasket Kit - Honda P400210600087
ATHENA
$17.95Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race gas with a higher compression. Kits do not...400210600087- SKU:
- 400210600087
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
$17.95 -
MOOSE RACING Gasket set with oil seal - YZ65 8110008
MOOSE RACING
$69.45MOOSE RACING Gasket set with oil seal YZ65 8110008Moose can now handle all your gasket and seal needs at a fraction of OEM cost, Rebuild the engine and transmission with total confidence as each set is designed for durability and accurate fit, Oil seals...09346582- SKU:
- 09346582
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$69.45 -
ATHENA Water Pump Gasket Kit - KTM P400270475001
ATHENA
$37.95ATHENA Water Pump Gasket Kit KTM P400270475001Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346063- SKU:
- 09346063
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$37.95 -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475014
ATHENA
$47.95ATHENA Water Pump Gasket Kit Kawasaki P400250475014Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346062- SKU:
- 09346062
- Availability:
- Ships Same Business Day
- Weight:
- 0.27 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 2-STROKE
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$47.95 -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475013
ATHENA
$27.95ATHENA Water Pump Gasket Kit Kawasaki P400250475013Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346061- SKU:
- 09346061
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$27.95 -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475012
ATHENA
$68.95ATHENA Water Pump Gasket Kit Kawasaki P400250475012Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346060- SKU:
- 09346060
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$68.95Qty in Cart: 0Quantity:Price:$68.95Subtotal: -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475010
ATHENA
$61.95ATHENA Water Pump Gasket Kit Kawasaki P400250475010Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346058- SKU:
- 09346058
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$61.95 -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475009
ATHENA
$50.95ATHENA Water Pump Gasket Kit Kawasaki P400250475009Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346057- SKU:
- 09346057
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$50.95Qty in Cart: 0Quantity:Price:$50.95Subtotal: -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475008
ATHENA
$50.95ATHENA Water Pump Gasket Kit Kawasaki P400250475008Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346056- SKU:
- 09346056
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
$50.95 -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475007
ATHENA
$60.95ATHENA Water Pump Gasket Kit Kawasaki P400250475007Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346055- SKU:
- 09346055
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$60.95 -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475006
ATHENA
$50.95ATHENA Water Pump Gasket Kit Kawasaki P400250475006Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346054- SKU:
- 09346054
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$50.95Qty in Cart: 0Quantity:Price:$50.95Subtotal: -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475005
ATHENA
$42.95ATHENA Water Pump Gasket Kit Kawasaki P400250475005Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346053- SKU:
- 09346053
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$42.95 -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475003
ATHENA
$28.95ATHENA Water Pump Gasket Kit Kawasaki P400250475003Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346051- SKU:
- 09346051
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$28.95Qty in Cart: 0Quantity:Price:$28.95Subtotal: -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475002
ATHENA
$40.95ATHENA Water Pump Gasket Kit Kawasaki P400250475002Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346050- SKU:
- 09346050
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$40.95 -
ATHENA Water Pump Gasket Kit - Kawasaki P400250475001
ATHENA
$40.95ATHENA Water Pump Gasket Kit Kawasaki P400250475001Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346049- SKU:
- 09346049
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$40.95 -
ATHENA Water Pump Gasket Kit - Honda P400210475012
ATHENA
$33.95ATHENA Water Pump Gasket Kit Honda P400210475012Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings09346048- SKU:
- 09346048
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$33.95Qty in Cart: 0Quantity:Price:$33.95Subtotal: -
ATHENA Complete Gasket Kit - Honda P400210850318
ATHENA
$172.95ATHENA Complete Gasket Kit Honda P400210850318Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high spring-back and superior tensile strength, Revolutionary transparent...09345913- SKU:
- 09345913
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$172.95 -
ATHENA Complete Gasket Kit - Husqvarna P400270900083
ATHENA
$210.95ATHENA Complete Gasket Kit Husqvarna P400270900083Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high spring-back and superior tensile strength, Revolutionary...09345469- SKU:
- 09345469
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$210.95 -
HELIX Gasket Material - 14.5" x 30" 403-5012
HELIX
$34.95HELIX Gasket Material 14.5" x 30" 403-5012One sheet 1/32" (.032") thick x 14.5" wide x 30" long, Made from aramid and other synthetic fibers compressed with Nitrile Butadiene Rubber (NBR) binder, Resists oils, solvents, mild acids, alkalis, gasses, water...09344769- SKU:
- 09344769
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- NITRILE RUBBER
- RIDING STYLE:
- ATV
- THICKNESS METRIC:
- 0.81 MM
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- THICKNESS:
- 0,81 MM (0,032')
- PRODUCT NAME:
- GASKET MATERIAL
- RIDING STYLE:
- STREET
- RIDING STYLE:
- WATERCRAFT
- THICKNESS IMPERIAL:
- 0,032'
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- BULK
$34.95 -
ATHENA Gasket Kit - RMZ250 P400510160018
ATHENA
$67.95ATHENA Gasket Kit RMZ250 P400510160018Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions, All are...09344758- SKU:
- 09344758
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE:
- 88,00 MM
- BORE SIZE METRIC:
- 88.00 MM
- DISPLACEMENT:
- 290 CC
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
$67.95
