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
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MOOSE RACING Motor Gasket Kit with Seal - RM125 811550
MOOSE RACING
$102.70A complete engine and transmission rebuild demands precision gaskets and seals that match OEM specifications—without the OEM price tag. This MOOSE RACING Motor Gasket Kit delivers genuine replacement seals and factory-engineered gaskets designed for...09340488- SKU:
- 09340488
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
$102.70 -
MOOSE RACING Complete Motor Gasket Kit - TTR125 808640
MOOSE RACING
$73.01A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-quality replacement seals and gaskets at a fraction of OEM pricing, allowing you to...09340489- SKU:
- 09340489
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
$73.01 -
MOOSE RACING Motor Gasket Kit with Seal - TTR125 811640
MOOSE RACING
$88.62A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your investment or performance. MOOSE Racing delivers OEM-equivalent fitment at a fraction of the cost, eliminating the need to source components...09340490- SKU:
- 09340490
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
$88.62 -
MOOSE RACING Top End Gasket Kit - YZ125 810641
MOOSE RACING
$28.10A top-end rebuild demands precision gaskets and seals that won't compromise your engine's integrity or your wallet. The MOOSE RACING Top End Gasket Kit gives you OEM-quality components at a fraction of OEM pricing, so you can confidently reassemble your...09340491- SKU:
- 09340491
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
$28.10 -
MOOSE RACING Inner Clutch Cover Gasket 816274
MOOSE RACING
$17.74A failing clutch cover gasket compromises engine sealing and invites oil leakage that can damage surrounding components. The MOOSE RACING Inner Clutch Cover Gasket delivers OEM-equivalent sealing performance at a fraction of OEM pricing, using high-tech...09346137- SKU:
- 09346137
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- TYPE:
- CLUTCH COVER
$17.74 -
MOOSE RACING Inner Clutch Cover Gasket 816281
MOOSE RACING
$16.37A failing clutch cover gasket compromises your engine's oil containment and invites costly leaks that can damage surrounding components. The MOOSE RACING Inner Clutch Cover Gasket delivers OEM-equivalent sealing performance at a fraction of OEM pricing,...09346138- SKU:
- 09346138
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$16.37 -
MOOSE RACING Inner Clutch Cover Gasket 816282
MOOSE RACING
$15.18A leaking clutch cover gasket compromises both performance and engine longevity—this OEM-spec replacement from Moose Racing seals critical contact points with precision-engineered materials that outlast inferior aftermarket options. Whether you're...09346139- SKU:
- 09346139
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$15.18 -
MOOSE RACING Inner Clutch Cover Gasket 816285
MOOSE RACING
$15.18A failing clutch cover gasket compromises engine sealing and invites costly oil leaks that can damage bearings and internal components. The MOOSE RACING Inner Clutch Cover Gasket delivers OEM-equivalent sealing performance at a fraction of OEM pricing,...09346140- SKU:
- 09346140
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$15.18 -
MOOSE RACING Outer Clutch Cover Gasket 816286
MOOSE RACING
$13.64A leaking clutch cover gasket compromises engine sealing and can lead to oil loss and contamination over time. The MOOSE RACING Outer Clutch Cover Gasket delivers OEM-equivalent sealing performance at a fraction of the cost, using high-tech materials...09346141- SKU:
- 09346141
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$13.64Qty in Cart: 0Quantity:Price:$13.64Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - KX125 811427
MOOSE RACING
$92.89A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work—OEM-quality components at a fraction of dealership pricing. This MOOSE RACING kit eliminates the frustration of sourcing individual seals and...M811427- SKU:
- M811427
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- UNITS:
- KIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$92.89 -
MOOSE RACING Water Pump Rebuild Kit 821213
MOOSE RACING
$38.48A failing water pump can sideline your engine and compromise cooling system integrity—this MOOSE RACING rebuild kit gives you everything needed to restore your pump to OEM specifications without unnecessary downtime or expense. Rather than replacing the...09345179- SKU:
- 09345179
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$38.48 -
MOOSE RACING Water Pump Rebuild Kit 821233
MOOSE RACING
$53.09A failing water pump can compromise your entire cooling system, leaving you stranded trackside or worse. This MOOSE RACING rebuild kit supplies every gasket, seal, bearing, and O-ring needed to restore your water pump to OEM specifications—saving you the...09345181- SKU:
- 09345181
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$53.09 -
MOOSE RACING Water Pump Rebuild Kit 821243
MOOSE RACING
$52.37A failing water pump doesn't just reduce cooling efficiency—it can cause catastrophic engine damage in minutes. This MOOSE RACING rebuild kit gives you all the OEM-quality components needed to restore your water pump to factory specifications without...09345182- SKU:
- 09345182
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$52.37 -
MOOSE RACING Water Pump Rebuild Kit 821259
MOOSE RACING
$40.88A failing water pump can sideline your engine and compromise cooling system integrity—exactly what you can't afford during competition or demanding track sessions. This MOOSE RACING rebuild kit gives you everything needed to restore your water pump to...09345184- SKU:
- 09345184
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$40.88 -
MOOSE RACING Motor Gasket Kit with Seal - KTM360/380 811307
MOOSE RACING
$92.89A complete engine and transmission rebuild demands gaskets and seals that fit precisely and last through countless heat cycles. The MOOSE RACING Motor Gasket Kit eliminates the frustration of sourcing individual components from multiple suppliers while...09340110- SKU:
- 09340110
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
$92.89 -
MOOSE RACING Complete Motor Gasket Kit - CR500 808273
MOOSE RACING
$81.27A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise reliability or performance. The MOOSE RACING Complete Motor Gasket Kit eliminates the frustration of sourcing individual components by bundling...M808273- SKU:
- M808273
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$81.27 -
MOOSE RACING Complete Motor Gasket Kit - XR600 808280
MOOSE RACING
$102.28A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or wallet. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-quality components at a fraction of dealership pricing, letting you...M808280- SKU:
- M808280
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$102.28Qty in Cart: 0Quantity:Price:$102.28Subtotal: -
MOOSE RACING Complete Motor Gasket Kit - KLR110/DRZ110 808415
MOOSE RACING
$71.55A 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 frustration of sourcing individual components at premium OEM prices, giving you every...09340131- SKU:
- 09340131
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$71.55 -
MOOSE RACING Complete Motor Gasket Kit - KX/RM100 808411
MOOSE RACING
$62.78A complete engine rebuild demands precision gaskets and seals that won't compromise your motor's integrity or your wallet. This Moose Racing kit eliminates the guesswork of sourcing individual components, giving you every gasket and seal needed for...M808411- SKU:
- M808411
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- UNITS:
- KIT
$62.78 -
MOOSE RACING Ignition Cover Gasket 816058
MOOSE RACING
$11.65A compromised ignition cover gasket can lead to oil seepage, contamination, and potential engine damage—precisely why OEM-quality replacement is non-negotiable for serious builders. The MOOSE RACING 816058 delivers genuine sealing performance at a...09340570- SKU:
- 09340570
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- IGNITION COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
$11.65
