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 Top End Gasket Kit - RMZ 450 810595
MOOSE RACING
$87.05Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as each set is designed for durability and...09341896- SKU:
- 09341896
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$87.05 -
MOOSE RACING Water Pump Rebuild Kit 821302
MOOSE RACING
$63.85Include every gasket, O-ring, bearing and seal required to rebuild a water pump, Typical kit includes the following: bearings where applicable; rubber seals; mechanical water pump seal where applicable; side cover gasket; water pump gasket; snap rings...09345192- SKU:
- 09345192
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$63.85 -
MOOSE RACING Water Pump Rebuild Kit 821312
MOOSE RACING
$57.10Include every gasket, O-ring, bearing and seal required to rebuild a water pump, Typical kit includes the following: bearings where applicable; rubber seals; mechanical water pump seal where applicable; side cover gasket; water pump gasket; snap rings...09345194- SKU:
- 09345194
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$57.10 -
MOOSE RACING Water Pump Rebuild Kit 821318
MOOSE RACING
$36.16Include every gasket, O-ring, bearing and seal required to rebuild a water pump, Typical kit includes the following: bearings where applicable; rubber seals; mechanical water pump seal where applicable; side cover gasket; water pump gasket; snap rings...09345196- SKU:
- 09345196
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$36.16 -
MOOSE RACING Water Pump Rebuild Kit 821319
MOOSE RACING
$46.91Include every gasket, O-ring, bearing and seal required to rebuild a water pump, Typical kit includes the following: bearings where applicable; rubber seals; mechanical water pump seal where applicable; side cover gasket; water pump gasket; snap rings...09345197- SKU:
- 09345197
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$46.91 -
VESRAH Complete Gasket Kit - YZ 85 VG-2149
VESRAH
$48.79Complete gasket sets include all necessary engine gaskets, o-rings and valve guide oil seals to rebuild a complete engine (do not include oil seals); sold each, Top-end gasket sets include all necessary top-end gaskets, o-rings and valve guide oil seals...09340963- SKU:
- 09340963
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
$48.79 -
MOOSE RACING Inner Clutch Cover Gasket 816350
MOOSE RACING
$18.18Moose can now handle all your gasket and seal needs at a fraction of OEM cast, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmissions with total confidence as each set is designed for durability and...09346590- SKU:
- 09346590
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- EACH
- MOUNTING POSITION:
- INNER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$18.18 -
MOOSE RACING Inner Clutch Cover Gasket 816672
MOOSE RACING
$17.12Moose can now handle all your gasket and seal needs at a fraction of OEM cast, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmissions with total confidence as each set is designed for durability and...09346160- SKU:
- 09346160
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
$17.12 -
MOOSE RACING Inner Clutch Cover Gasket 816752
MOOSE RACING
$25.00Moose can now handle all your gasket and seal needs at a fraction of OEM cast, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmissions with total confidence as each set is designed for durability and...09346167- SKU:
- 09346167
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$25.00 -
MOOSE RACING Inner Clutch Cover Gasket 816757
MOOSE RACING
$33.80Moose can now handle all your gasket and seal needs at a fraction of OEM cast, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmissions with total confidence as each set is designed for durability and...09346169- SKU:
- 09346169
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
$33.80 -
MOOSE RACING Exhaust Gasket Kit 823171
MOOSE RACING
$6.85MOOSE RACING Exhaust Gasket Kit09346686- SKU:
- 09346686
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$6.85Qty in Cart: 0Quantity:Price:$6.85Subtotal: -
MOOSE RACING Exhaust Gasket Kit 823002
MOOSE RACING
$9.80MOOSE RACING Exhaust Gasket Kit09345272- SKU:
- 09345272
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$9.80 -
MOOSE RACING Exhaust Gasket Kit 823170
MOOSE RACING
$6.85MOOSE RACING Exhaust Gasket Kit09345350- SKU:
- 09345350
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- EXHAUST
- UNITS:
- KIT
$6.85 -
MOOSE RACING Exhaust Gasket Kit 823176
MOOSE RACING
$21.75MOOSE RACING Exhaust Gasket Kit09345351- SKU:
- 09345351
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$21.75 -
MOOSE RACING Exhaust Gasket Kit 823187
MOOSE RACING
$35.30MOOSE RACING Exhaust Gasket Kit09345352- SKU:
- 09345352
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$35.30 -
MOOSE RACING Complete Gasket Kit 808374
MOOSE RACING
$119.16Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as each set is designed for durability and...09345357- SKU:
- 09345357
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$119.16 -
MOOSE RACING Complete Motor Gasket Kit - KX450F 808485
MOOSE RACING
$166.38Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as each set is designed for durability and...09345358- SKU:
- 09345358
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$166.38 -
MOOSE RACING Motor Gasket Kit with Seal - KDX/JR 811416
MOOSE RACING
$40.80Moose 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 are genuine OEM replacement seals, Sets include...09340485- SKU:
- 09340485
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$40.80 -
MOOSE RACING Top End Gasket Kit - RM125 810550
MOOSE RACING
$29.88Moose can now handle all your gasket and seal needs at a fraction of OEM cost, High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as each set is designed for durability and...09340486- SKU:
- 09340486
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$29.88Qty in Cart: 0Quantity:Price:$29.88Subtotal: -
MOOSE RACING Complete Motor Gasket Kit - RM125 808550
MOOSE RACING
$78.97Moose can now handle all your gasket and seal needs at a fraction of OEM cost., High-tech materials provide unmatched reliability and performance, Rebuild the engine and transmission with total confidence as each set is designed for durability and...09340487- SKU:
- 09340487
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- COMPLETE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
$78.97
