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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VESRAH Complete Gasket Kit - KDX80 VG-489
VESRAH
$32.97A complete engine rebuild demands precision—gasket failure is one of the fastest ways to lose compression, leak fluids, and compromise engine integrity. The VESRAH Complete Gasket Kit (VG-489) supplies every seal, o-ring, and gasket your KDX80 needs for...VG489- SKU:
- VG489
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- SET
$32.97 -
MOOSE RACING Inner Clutch Cover Gasket 816194
MOOSE RACING
$18.03A leaking clutch cover gasket compromises engine integrity and invites oil seepage that can damage surrounding components. The MOOSE RACING Inner Clutch Cover Gasket 816194 delivers OEM-equivalent sealing performance at a fraction of OEM pricing, using...09346126- SKU:
- 09346126
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$18.03 -
MOOSE RACING Inner Clutch Cover Gasket 816251
MOOSE RACING
$20.86A leaking clutch cover gasket compromises engine sealing and invites oil contamination into critical drivetrain components. The MOOSE RACING Inner Clutch Cover Gasket 816251 delivers OEM-equivalent sealing performance at a fraction of OEM pricing, using...09346131- SKU:
- 09346131
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$20.86 -
MOOSE RACING Inner Clutch Cover Gasket 816272
MOOSE RACING
$17.74A worn or damaged inner clutch cover gasket will compromise engine sealing and lead to oil leakage, performance loss, and potential internal damage. The MOOSE RACING 816272 delivers OEM-equivalent sealing reliability at a fraction of OEM pricing, using...09346136- SKU:
- 09346136
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$17.74 -
MOOSE RACING Water Pump Rebuild Kit 821998
MOOSE RACING
$53.56A failing water pump doesn't just compromise cooling efficiency—it can leave you stranded mid-race or mid-drive with catastrophic engine damage. The MOOSE RACING Water Pump Rebuild Kit 821998 gives you everything needed to restore your pump to OEM...09346542- SKU:
- 09346542
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
$53.56 -
MOOSE RACING Clutch Cover Gasket 816143
MOOSE RACING
$15.23A leaking clutch cover gasket compromises both engine performance and reliability—oil seepage leads to contamination, wear, and potential catastrophic failure. The MOOSE RACING Clutch Cover Gasket 816143 delivers a precision-engineered OEM replacement...09341449- SKU:
- 09341449
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$15.23 -
MOOSE RACING Ignition Cover Gasket 816144
MOOSE RACING
$8.80Ignition cover gaskets fail silently—until oil starts seeping onto your engine bay and performance suffers. The MOOSE RACING 816144 eliminates guesswork with OEM-spec sealing geometry at a fraction of dealership pricing. Whether you're rebuilding after a...09341450- SKU:
- 09341450
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
$8.80 -
MOOSE RACING Top End Gasket Kit - Husqvarna/KTM 810959
MOOSE RACING
$71.55A top-end rebuild demands precision—incorrect gasket fitment or inferior seal materials will compromise compression, leak oil, and waste your time and money. The MOOSE RACING Top End Gasket Kit eliminates guesswork by including every OEM-spec gasket,...09344771- SKU:
- 09344771
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$71.55 -
MOOSE RACING Top End Gasket Kit - Kawasaki 810483
MOOSE RACING
$30.62A top-end rebuild demands precision components that won't compromise reliability or performance. The MOOSE RACING Gasket Kit delivers OEM-quality seals and gaskets at a fraction of the cost, letting you rebuild with confidence whether you're replacing a...09344772- SKU:
- 09344772
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$30.62 -
MOOSE RACING Top End Gasket Kit - Kawasaki 810484
MOOSE RACING
$30.06When you're rebuilding a top end, cutting corners on gaskets and seals is a guaranteed path to failure. The MOOSE RACING Top End Gasket Kit gives you everything needed for a complete, reliable rebuild at a fraction of OEM pricing—without sacrificing the...09344773- SKU:
- 09344773
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$30.06 -
MOOSE RACING Top End Gasket Kit - Yamaha 810642
MOOSE RACING
$54.04A quality top-end rebuild requires precision gaskets and seals that won't compromise your engine's integrity or cost you a fortune. The MOOSE RACING Top End Gasket Kit delivers OEM-equivalent performance at a fraction of the price, with every component...09344774- SKU:
- 09344774
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
$54.04 -
MOOSE RACING Top End Gasket - CRF250 810262
MOOSE RACING
$76.95A top-end rebuild demands precision gaskets and seals that won't compromise your engine's integrity or cost you a fortune. The MOOSE RACING gasket set gives you OEM-equivalent seals at a fraction of the price, letting you rebuild your CRF250 with...09340071- SKU:
- 09340071
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
$76.95 -
MOOSE RACING Top End Gasket - PW50 810601
MOOSE RACING
$13.39A top-end rebuild demands precision gaskets and seals that won't compromise your engine's integrity or your wallet. MOOSE RACING delivers OEM-equivalent performance at a fraction of the cost, with every gasket, O-ring, and seal you need for a complete,...09340078- SKU:
- 09340078
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$13.39 -
MOOSE RACING Top End Gasket - PW80 810615
MOOSE RACING
$26.26A top-end rebuild demands precision gaskets and seals that won't fail under race conditions or repeated heat cycles. The MOOSE RACING Top End Gasket Set delivers OEM-equivalent reliability at a fraction of the cost, giving you the confidence to push your...09340079- SKU:
- 09340079
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$26.26 -
MOOSE RACING Top End Gasket - TTR125 810640
MOOSE RACING
$39.34When you're rebuilding a TTR125 top end, OEM gasket kits carry a premium price tag—and compromise on quality isn't an option. The MOOSE RACING Top End Gasket Set gives you OEM-spec reliability at a fraction of the cost, with high-tech materials...09340080- SKU:
- 09340080
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$39.34 -
VESRAH Top End Gasket Kit - TW 200 VG-6129-M
VESRAH
$80.28A top-end rebuild demands precision gaskets that seal consistently under extreme combustion pressures—anything less risks compression loss and catastrophic engine failure. The VESRAH Top End Gasket Kit delivers OEM-equivalent sealing across all critical...VG6129M- SKU:
- VG6129M
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- TOP END
- UNITS:
- SET
$80.28 -
VESRAH Top End Gasket Kit - YZ 125 VG-6138
VESRAH
$41.93A top-end rebuild demands precision gaskets that seal consistently under extreme combustion pressures—compromising here means risking blow-by, oil leakage, and lost performance. The VESRAH VG-6138 gasket kit gives you every component needed for a...VG6138- SKU:
- VG6138
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$41.93 -
VESRAH Top End Gasket Kit - Yamaha 500 VG-674
VESRAH
$55.67Engine gasket failure is one of the most common causes of performance loss and reliability issues in rebuilt engines. The VESRAH VG-674 Top End Gasket Kit ensures proper sealing across all critical combustion chamber interfaces, preventing blow-by and...VG674- SKU:
- VG674
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$55.67 -
VESRAH Complete Gasket Kit - CT90 VG-168
VESRAH
$35.95A failed gasket can sideline your engine and drain your wallet fast. This complete gasket kit eliminates guesswork during rebuilds by delivering every seal, o-ring, and gasket you need in one package—saving time and preventing costly comebacks. Whether...VG168- SKU:
- VG168
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- SET
$35.95 -
VESRAH Complete Gasket Kit - XL250S VG-185
VESRAH
$87.40A complete engine rebuild demands precision gaskets that seal reliably under extreme combustion pressures—this VESRAH kit eliminates the risk of hunting down individual components and guarantees compatibility across your entire engine. Whether you're...VG185- SKU:
- VG185
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- SET
$87.40
