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 Top End Gasket Kit - YZ 426 F 810676
MOOSE RACING
$68.81When you're rebuilding a YZ 426F top end, precision gaskets and seals are non-negotiable—they're the difference between a reliable engine and a catastrophic failure. The MOOSE RACING Top End Gasket...M810676- SKU:
- M810676
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$68.81 -
MOOSE RACING Top End Gasket Kit - YZ/IT490 810680
MOOSE RACING
$21.90A top-end rebuild demands precision gasket selection—mismatched seals lead to leaks, compression loss, and catastrophic engine failure. The MOOSE RACING Top End Gasket Kit eliminates guesswork by...M810680- SKU:
- M810680
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$21.90 -
MOOSE RACING Top End Gasket Kit - YZ 490 810683
MOOSE RACING
$24.85A top-end rebuild demands precision and reliability—cheap gasket sets lead to oil leaks, compression loss, and costly engine damage. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals and...M810683- SKU:
- M810683
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$24.85 -
MOOSE RACING Top End Gasket Kit - WR 500 810684
MOOSE RACING
$24.85A top-end rebuild demands precision—gasket failure can compromise compression, leak oil, and undo all your work. The MOOSE RACING Top End Gasket Kit delivers OEM-quality seals and gaskets at a...M810684- SKU:
- M810684
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$24.85Qty in Cart: 0Quantity:Price:$24.85Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - YZ85 811614
MOOSE RACING
$55.26A complete engine and transmission rebuild demands precision components that won't compromise performance or reliability. This MOOSE RACING gasket kit delivers genuine OEM-quality seals at a fraction...M811614- SKU:
- M811614
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$55.26 -
MOOSE RACING Motor Gasket Kit with Seal - YZ125 811631
MOOSE RACING
$70.33A complete engine and transmission rebuild demands precision-fit gaskets and seals—factory tolerances won't accept substitutes. The MOOSE RACING Motor Gasket Kit delivers OEM-equivalent performance...M811631- SKU:
- M811631
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- TYPE:
- ENGINE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$70.33 -
MOOSE RACING Motor Gasket Kit with Seal - YZ250 811662
MOOSE RACING
$66.13A complete engine and transmission rebuild demands precision-fit gaskets and seals—any leak or misalignment compromises performance and reliability. The MOOSE RACING Motor Gasket Kit delivers...M811662- SKU:
- M811662
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$66.13 -
MOOSE RACING Motor Gasket Kit with Seal - YZ250 811670
MOOSE RACING
$71.82A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work or your budget. This Moose Racing Motor Gasket Kit delivers OEM-quality components at a...M811670- SKU:
- M811670
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- UNITS:
- KIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$71.82 -
MOOSE RACING Top End Gasket Kit Honda 810989
MOOSE RACING
$77.45A top-end rebuild demands precision components that won't compromise engine integrity or drain your wallet. The MOOSE RACING Gasket Kit delivers OEM-equivalent sealing performance at a fraction of...09345886- SKU:
- 09345886
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- UNITS:
- SET
$77.45 -
MOOSE RACING Top End Gasket - KTM/Husqvarna 810991
MOOSE RACING
$98.96A top-end rebuild demands precision—mismatched or worn gaskets will compromise compression, leak oil, and undermine all your other work. The MOOSE RACING Top End Gasket set eliminates guesswork by...09345887- SKU:
- 09345887
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- SET
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
$98.96 -
MOOSE RACING Motor Gasket Kit with Seal 811376
MOOSE RACING
$182.97A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or your wallet. The MOOSE RACING Motor Gasket Kit delivers OEM-quality components at...09345888- SKU:
- 09345888
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- TYPE:
- COMPLETE
$182.97Qty in Cart: 0Quantity:Price:$182.97Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal 811984
MOOSE RACING
$198.99A complete engine and transmission rebuild requires gaskets and seals that match OEM specifications without the premium price tag. MOOSE RACING's Motor Gasket Kit delivers genuine OEM-quality seals...09345889- SKU:
- 09345889
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$198.99 -
MOOSE RACING Motor Gasket Kit with Seal 811989
MOOSE RACING
$210.06A complete engine and transmission rebuild demands precision-fit gaskets and seals—and OEM replacements often come with OEM pricing. The MOOSE RACING Motor Gasket Kit delivers genuine OEM-quality...09345890- SKU:
- 09345890
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
$210.06 -
MOOSE RACING Ignition Cover Gasket 816098
MOOSE RACING
$6.09A leaking ignition cover gasket compromises engine reliability and can lead to oil seepage that damages surrounding components. The MOOSE RACING Ignition Cover Gasket delivers OEM-quality sealing at...09345892- SKU:
- 09345892
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
$6.09 -
MOOSE RACING Ignition Cover Gasket 816295
MOOSE RACING
$13.64Ignition cover gaskets fail silently, often leaving you stranded with oil leaks that compromise engine integrity and performance. The MOOSE RACING 816295 delivers OEM-quality sealing at a fraction of...09345893- SKU:
- 09345893
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- TYPE:
- IGNITION COVER
$13.64 -
MOOSE RACING Ignition Cover Gasket 816299
MOOSE RACING
$13.64A leaking ignition cover gasket compromises engine sealing and can lead to oil weeping that attracts dirt and debris into critical engine components. The MOOSE RACING Ignition Cover Gasket delivers...09345894- SKU:
- 09345894
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
- ENGINE TYPE:
- 4-STROKE
$13.64 -
MOOSE RACING Ignition Cover Gasket 816317
MOOSE RACING
$13.64A leaking ignition cover gasket compromises engine sealing and can lead to oil contamination and performance loss. The MOOSE RACING 816317 delivers OEM-level fit and durability at a fraction of OEM...09345895- SKU:
- 09345895
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
$13.64 -
MOOSE RACING Ignition Cover Gasket 816749
MOOSE RACING
$11.24A leaking ignition cover gasket compromises engine sealing and can lead to oil seepage that damages surrounding components. The MOOSE RACING Ignition Cover Gasket (816749) delivers OEM-equivalent...09345896- SKU:
- 09345896
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- IGNITION COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$11.24 -
MOOSE RACING Ignition Cover Gasket 816755
MOOSE RACING
$14.83A leaking ignition cover gasket compromises engine sealing and can lead to oil contamination and performance loss. The MOOSE RACING Ignition Cover Gasket delivers OEM-quality sealing at a fraction of...09345897- SKU:
- 09345897
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- IGNITION COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$14.83Qty in Cart: 0Quantity:Price:$14.83Subtotal: -
MOOSE RACING Complete Motor Gasket Kit - KX250 808455
MOOSE RACING
$58.40A complete engine and transmission rebuild demands precision gasket sealing—any leak or premature failure compromises performance and reliability. The MOOSE RACING Complete Motor Gasket Kit delivers...M808455- SKU:
- M808455
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$58.40
