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 Clutch Cover Gasket 819193
MOOSE RACING
$7.23A leaking clutch cover gasket can compromise engine sealing and lead to oil loss—exactly what you want to avoid during critical race sessions or long-distance driving. The MOOSE RACING Clutch Cover Gasket delivers OEM-equivalent sealing performance at a...09346539- SKU:
- 09346539
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$7.23 -
MOOSE RACING Inner Clutch Cover Gasket 816354
MOOSE RACING
$20.12A leaking clutch cover gasket compromises engine sealing and can lead to oil loss and contamination. The MOOSE RACING Inner Clutch Cover Gasket delivers OEM-equivalent fitment and reliability at a fraction of OEM pricing, making it the smart choice for...09346540- SKU:
- 09346540
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
$20.12 -
MOOSE RACING Complete Gasket Set 8110012
MOOSE RACING
$242.14A complete gasket set is the foundation of engine reliability—sealing critical junctions where combustion pressure, coolant, and oil demand absolute integrity. Whether you're rebuilding after high-mileage wear or assembling a freshly-machined block, the...09346916- SKU:
- 09346916
- Availability:
- Ships Same Business Day
- Weight:
- 0.42 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
$242.14 -
MOOSE RACING Gasket Clutch Inner - Yamaha 816322
MOOSE RACING
$15.13A worn or damaged clutch inner gasket compromises your clutch pack's seal integrity, leading to fluid leakage, slippage, and unpredictable engagement—all of which threaten your ride's reliability and performance. The MOOSE RACING Gasket Clutch Inner is...09346937- SKU:
- 09346937
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- TYPE:
- CLUTCH INNER
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$15.13Qty in Cart: 0Quantity:Price:$15.13Subtotal: -
MOOSE RACING Ignition Cover Gasket 816605
MOOSE RACING
$6.67A compromised ignition cover gasket can lead to oil seepage, contamination of your ignition system, and potential performance loss at critical moments. The MOOSE RACING Ignition Cover Gasket 816605 delivers OEM-equivalent sealing reliability with the...09346940- SKU:
- 09346940
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- TYPE:
- IGNITION COVER
$6.67 -
MOOSE RACING Gasket Clutch Inner - Yamaha 817676
MOOSE RACING
$13.64A worn or damaged clutch inner gasket compromises your clutch assembly's sealing integrity, leading to fluid leakage, slippage, and potential drivetrain failure. MOOSE RACING's precision gasket clutch inner restores a reliable seal and consistent clutch...09346942- SKU:
- 09346942
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- ENGINE TYPE:
- 4-STROKE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH INNER
$13.64 -
MOOSE RACING Complete Gasket Set - KTM 125 808309
MOOSE RACING
$74.51A complete gasket set is essential maintenance for any KTM 125 engine that's been rebuilt, bored, or heavily raced. Worn or compromised gaskets lead to compression loss, oil seepage, and unreliable performance on the track or trail. MOOSE RACING's...09346944- SKU:
- 09346944
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET SET
$74.51Qty in Cart: 0Quantity:Price:$74.51Subtotal: -
MOOSE RACING Complete Gasket Set - KTM 85 808315
MOOSE RACING
$74.51A complete gasket set is essential maintenance for any KTM 85 engine rebuild or top-end service, ensuring proper sealing and preventing fluid leaks that compromise performance and reliability. MOOSE RACING's OEM-quality gasket set eliminates guesswork by...09346945- SKU:
- 09346945
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET SET
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$74.51Qty in Cart: 0Quantity:Price:$74.51Subtotal: -
MOOSE RACING Complete Gasket Set - KTM 250 808328
MOOSE RACING
$146.11A complete gasket set is essential for any KTM 250 engine rebuild or top-end service—worn or damaged gaskets are a leading cause of compression loss, oil leaks, and coolant seepage that compromise performance and reliability. MOOSE RACING gaskets are...09346946- SKU:
- 09346946
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
$146.11 -
MOOSE RACING Complete Gasket Set - Suzuki 808531
MOOSE RACING
$70.11A complete gasket set is essential for any engine rebuild or top-end overhaul—it ensures a perfect seal across all critical engine surfaces and eliminates the risk of oil leaks, coolant seepage, or combustion blowby that can compromise performance and...09346947- SKU:
- 09346947
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- SET
$70.11 -
MOOSE RACING Gasket Clutch Inner - KTM 816212
MOOSE RACING
$15.18A worn or damaged clutch inner gasket compromises your KTM's sealing integrity, leading to oil leakage and potential clutch slippage during aggressive riding. The MOOSE RACING Gasket Clutch Inner restores proper pressure containment and maintains...09346963- SKU:
- 09346963
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH INNER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$15.18 -
MOOSE RACING Ignition Cover Gasket 816629
MOOSE RACING
$5.58A quality ignition cover gasket is critical to preventing oil leaks and maintaining proper engine sealing on your race engine or high-performance build. The MOOSE Racing Ignition Cover Gasket delivers reliable, long-lasting sealing that withstands the...09346965- SKU:
- 09346965
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$5.58 -
MOOSE RACING Ignition Cover Gasket 816735
MOOSE RACING
$10.90A reliable ignition cover gasket is critical to preventing oil seepage and maintaining proper engine sealing—especially under high-RPM racing conditions where heat and pressure stress every component. The MOOSE Racing gasket delivers OEM-equivalent...09346967- SKU:
- 09346967
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- IGNITION COVER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$10.90 -
MOOSE RACING Ignition Cover Gasket 816748
MOOSE RACING
$7.28A failing ignition cover gasket will leak oil, compromise engine sealing, and leave you stranded trackside. The MOOSE RACING 816748 delivers OEM-grade sealing reliability without the OEM price tag, keeping your ignition system dry and your engine...09346968- SKU:
- 09346968
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- IGNITION COVER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$7.28 -
MOOSE RACING Head Cover Gasket - KTM 817843
MOOSE RACING
$10.95A leaking valve cover gasket compromises engine sealing and invites oil contamination into your combustion chamber—a problem that gets expensive fast. Moose Racing's OEM-equivalent head cover gasket restores a reliable seal at a fraction of what KTM...09346969- SKU:
- 09346969
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- HEAD COVER
$10.95 -
MOOSE RACING Clutch Outer Gasket - KTM 817885
MOOSE RACING
$6.83A worn or damaged clutch outer gasket compromises your KTM's clutch seal integrity, leading to oil leakage and potential clutch slippage during aggressive riding. This OEM-equivalent MOOSE RACING gasket restores a proper seal without requiring internal...09346970- SKU:
- 09346970
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- CLUTCH OUTER
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$6.83 -
MOOSE RACING Clutch Outer Gasket - KTM 817987
MOOSE RACING
$8.29A leaking clutch housing will compromise your bike's performance and reliability faster than you'd expect. The MOOSE RACING Clutch Outer Gasket seals the critical interface between your clutch cover and engine cases, preventing oil seepage that can...09346972- SKU:
- 09346972
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- TYPE:
- CLUTCH OUTER
- RIDING STYLE:
- OFF-ROAD
$8.29 -
MOOSE RACING Head Cover Gasket - KTM 819056
MOOSE RACING
$8.96A leaking valve cover gasket compromises engine sealing and can lead to oil contamination or loss. The OEM Moose Racing Head Cover Gasket for your KTM delivers genuine OEM-specification sealing at a fraction of dealer pricing, allowing you to rebuild...09346973- SKU:
- 09346973
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- HEAD COVER
- UNITS:
- EACH
$8.96 -
MOOSE RACING Ignition Cover Gasket 816249
MOOSE RACING
$18.60A leaking ignition cover doesn't just waste oil—it compromises engine bay cleanliness and can lead to costly secondary damage if fluid reaches electrical components. The MOOSE RACING Ignition Cover Gasket 816249 delivers genuine OEM-quality sealing at a...09342128- SKU:
- 09342128
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- IGNITION COVER
$18.60 -
MOOSE RACING Clutch Cover Gasket 816240
MOOSE RACING
$13.42A leaking clutch cover gasket compromises engine sealing and can lead to oil contamination and loss of pressure—exactly what you don't want mid-race or mid-project. The MOOSE RACING 816240 clutch cover gasket delivers OEM-equivalent sealing performance...09342129- SKU:
- 09342129
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
$13.42
