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 - KTM 811317
MOOSE RACING
$165.87A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work—or your wallet. MOOSE Racing delivers OEM-quality components at a fraction of dealership pricing, so you can rebuild with confidence knowing...09340631- SKU:
- 09340631
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
$165.87Qty in Cart: 0Quantity:Price:$165.87Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - KTM 811318
MOOSE RACING
$194.00A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work or your budget. The MOOSE RACING Motor Gasket Kit delivers OEM-equivalent performance at a fraction of the cost, giving you the confidence to...09340632- SKU:
- 09340632
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
$194.00 -
MOOSE RACING Motor Gasket Kit without Seal - TTR 811643
MOOSE RACING
$107.75Engine and transmission rebuilds demand precision components that won't compromise reliability or drain your budget. MOOSE RACING's Motor Gasket Kit delivers OEM-equivalent sealing performance at a fraction of OEM pricing, allowing you to rebuild with...09340634- SKU:
- 09340634
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$107.75 -
MOOSE RACING Clutch Cover Gasket 816176
MOOSE RACING
$15.59A leaking clutch cover gasket compromises engine sealing and can lead to oil loss and contamination during high-performance operation. The MOOSE RACING Clutch Cover Gasket 816176 delivers OEM-quality sealing at a fraction of OEM pricing, using high-tech...09340636- SKU:
- 09340636
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$15.59 -
MOOSE RACING Complete Motor Gasket Kit - CR80 808206
MOOSE RACING
$58.40A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work. This MOOSE RACING kit eliminates the guesswork and expense of sourcing individual gasket components by delivering everything you need in...M808206- SKU:
- M808206
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$58.40 -
MOOSE RACING Clutch Cover Gasket 816516
MOOSE RACING
$5.05A leaking clutch cover gasket compromises engine sealing and can lead to oil loss and potential damage during critical racing or riding conditions. The MOOSE RACING Clutch Cover Gasket (816516) delivers OEM-equivalent sealing performance at a fraction of...M816516- SKU:
- M816516
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$5.05 -
MOOSE RACING Top End Gasket Kit - XR70R 810210
MOOSE RACING
$30.06When you're rebuilding the top end of your XR70R, you need gasket and seal sets engineered for precision fit and durability—not compromise. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals at a fraction of the cost, so you can complete your...09340262- SKU:
- 09340262
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$30.06 -
MOOSE RACING Top End Gasket Kit - CR85R 810211
MOOSE RACING
$26.26A top-end rebuild demands precision-fit gaskets and seals that won't fail under load. The MOOSE RACING gasket kit eliminates the guesswork and expense of sourcing individual components, delivering everything needed for a complete, reliable engine refresh...09340263- SKU:
- 09340263
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$26.26 -
MOOSE RACING Top End Gasket Kit - KXF/RMZ250 810463
MOOSE RACING
$67.59When you're rebuilding a top end, using the wrong gasket kit risks compression loss, oil leaks, and premature failure. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals at a fraction of the cost, with every component engineered for precision...09340276- SKU:
- 09340276
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- TOP END
$67.59 -
MOOSE RACING Complete Motor Gasket Kit - KXF/RMZ250 808463
MOOSE RACING
$117.61A complete engine and transmission rebuild demands gasket and seal integrity that won't compromise your work or wallet. This MOOSE RACING kit delivers OEM-quality components at a fraction of OEM pricing, letting you rebuild with confidence without...09340277- SKU:
- 09340277
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
$117.61 -
MOOSE RACING Top End Gasket Kit - RM250 810589
MOOSE RACING
$48.17A top-end rebuild demands precision gaskets and seals that won't compromise engine integrity or cost you a fortune. The MOOSE RACING Top End Gasket Kit delivers OEM-quality components at a fraction of the price, letting you rebuid with confidence whether...09340282- SKU:
- 09340282
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
$48.17 -
MOOSE RACING Complete Motor Gasket Kit - RM250 808589
MOOSE RACING
$87.56A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your RM250's integrity. This Moose Racing kit eliminates the tedium of sourcing individual components while delivering OEM-quality reliability at a...09340283- SKU:
- 09340283
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- TYPE:
- COMPLETE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$87.56 -
MOOSE RACING Motor Gasket Kit with Seal - RM250 811589
MOOSE RACING
$108.33A complete engine and transmission rebuild requires precision-fit gaskets and seals that won't compromise your work—and OEM replacements often come with OEM pricing. This MOOSE RACING Motor Gasket Kit delivers genuine OEM-quality seals at a fraction of...09340284- SKU:
- 09340284
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$108.33 -
MOOSE RACING Top End Gasket Kit - XR250R 810263
MOOSE RACING
$42.39A top-end rebuild demands precision-matched gaskets and seals—OEM quality at a fraction of the cost. This Moose Racing kit includes every gasket, O-ring, and seal needed for a complete XR250R top-end refresh, so you won't discover missing components...09340286- SKU:
- 09340286
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$42.39 -
MOOSE RACING Top End Gasket Kit - CRF150 810238
MOOSE RACING
$64.00When you're rebuilding a CRF150 top end, using OEM-quality gaskets and seals isn't optional—it's essential. This Moose Racing kit eliminates the guesswork by providing every gasket, O-ring, and seal you need in one package, all manufactured to exacting...09340069- SKU:
- 09340069
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- UNITS:
- KIT
$64.00 -
MOOSE RACING Motor Gasket Kit with Seal - DR350 811584
MOOSE RACING
$118.19A complete engine and transmission rebuild demands gasket and seal components that fit precisely and withstand operating pressures without compromise. This MOOSE RACING Motor Gasket Kit eliminates the frustration of sourcing individual gaskets, seals,...09340115- SKU:
- 09340115
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- KIT
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$118.19Qty in Cart: 0Quantity:Price:$118.19Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - DR650 811586
MOOSE RACING
$131.30A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work or your budget. This Moose Racing kit eliminates the guesswork of sourcing individual components, giving you OEM-quality seals at a fraction of...09340117- SKU:
- 09340117
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$131.30 -
MOOSE RACING Complete Motor Gasket Kit - CR125 808231
MOOSE RACING
$65.73A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your CR125's performance or longevity. The MOOSE RACING Complete Motor Gasket Kit eliminates the guesswork of sourcing individual components, delivering...M808231- SKU:
- M808231
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$65.73 -
MOOSE RACING Motor Gasket Kit with Seal - CR250 811255
MOOSE RACING
$80.18A complete engine and transmission rebuild requires precision components that won't compromise reliability or drain your budget. MOOSE Racing's Motor Gasket Kit delivers OEM-equivalent sealing integrity at a fraction of dealership pricing, letting you...M811255- SKU:
- M811255
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$80.18Qty in Cart: 0Quantity:Price:$80.18Subtotal: -
MOOSE RACING Top End Gasket Kit - KX 125 810429
MOOSE RACING
$45.27A top-end rebuild demands precision-fit gaskets and seals that won't compromise engine integrity or performance. The MOOSE RACING Top End Gasket Kit delivers OEM-equivalent reliability at a fraction of the cost, using high-tech materials engineered...M810429- SKU:
- M810429
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$45.27
