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 Complete Motor Gasket Kit - KDX200 808442
MOOSE RACING
$70.11A complete engine and transmission rebuild requires precision gaskets and seals that won't compromise your work. This Moose Racing kit eliminates the hassle of sourcing individual components, giving you every gasket, o-ring, and seal needed in one...M808442- SKU:
- M808442
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- KIT
$70.11 -
MOOSE RACING Ignition Cover Gasket 816100
MOOSE RACING
$7.81A failing ignition cover gasket compromises engine sealing and can lead to oil leakage, reduced performance, and potential engine damage. The MOOSE RACING Ignition Cover Gasket delivers OEM-quality sealing at a fraction of dealership pricing, making it...09340567- SKU:
- 09340567
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- IGNITION COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$7.81 -
MOOSE RACING Clutch Cover Gasket 816057
MOOSE RACING
$12.69A leaking clutch cover gasket compromises engine sealing and can lead to oil weeping that accelerates wear on internal components. The MOOSE RACING Clutch Cover Gasket 816057 delivers OEM-equivalent sealing performance at a fraction of OEM pricing,...09340568- SKU:
- 09340568
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$12.69 -
MOOSE RACING Top End Gasket Kit - CR250R 810264
MOOSE RACING
$54.00A top-end rebuild demands precision gaskets and seals that won't compromise engine integrity or cost you a fortune. This Moose Racing kit delivers OEM-quality components at a fraction of OEM pricing, giving you the confidence to execute a complete...09340457- SKU:
- 09340457
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
$54.00 -
MOOSE RACING Motor Gasket Kit with Seal - CR250 811264
MOOSE RACING
$126.65A 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...09340459- SKU:
- 09340459
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$126.65 -
MOOSE RACING Complete Motor Gasket Kit - CRF250R/X 808262
MOOSE RACING
$169.24A complete engine rebuild demands precision gaskets and seals that won't compromise your work—OEM replacements often come at premium prices, but Moose Racing delivers the same reliability at a fraction of the cost. This comprehensive kit includes every...09340460- SKU:
- 09340460
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$169.24 -
MOOSE RACING Top End Gasket Kit - KX250 810465
MOOSE RACING
$35.01A top-end rebuild demands precision gaskets and seals that won't fail under race conditions or high compression. The MOOSE RACING Top End Gasket Kit delivers OEM-quality components at a fraction of OEM pricing, giving you the confidence to push your...09340462- SKU:
- 09340462
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$35.01Qty in Cart: 0Quantity:Price:$35.01Subtotal: -
MOOSE RACING Complete Motor Gasket Kit - KX250 808465
MOOSE RACING
$93.43A complete engine and transmission rebuild demands gaskets and seals that won't fail under the stress of high-RPM operation. The MOOSE RACING Complete Motor Gasket Kit eliminates guesswork by bundling every gasket, o-ring, and valve seal you need for a...09340463- SKU:
- 09340463
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$93.43Qty in Cart: 0Quantity:Price:$93.43Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - KX250 811465
MOOSE RACING
$123.84A complete engine and transmission rebuild demands precision-fit gaskets and seals—any compromise risks leaks, performance loss, and catastrophic damage. The MOOSE RACING Motor Gasket Kit eliminates guesswork by providing every gasket and seal needed for...09340464- SKU:
- 09340464
- Availability:
- Ships Same Business Day
- Weight:
- 0.27 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$123.84 -
MOOSE RACING Top End Gasket Kit - 50 Adventure 810314
MOOSE RACING
$27.72A top-end rebuild demands precision gaskets and seals that won't fail under load. The MOOSE RACING Top End Gasket Kit delivers OEM-quality replacement seals at a fraction of OEM pricing, giving you the confidence to go deep on a piston replacement or...09340465- SKU:
- 09340465
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$27.72 -
MOOSE RACING Top End Gasket Kit - 200/SX/EXC 810319
MOOSE RACING
$32.09A top-end rebuild demands gasket and seal components that match OEM quality without the OEM price tag. The MOOSE RACING Top End Gasket Kit delivers genuine replacement seals paired with high-tech gasket materials engineered for durability and precise...09340468- SKU:
- 09340468
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$32.09 -
MOOSE RACING Complete Motor Gasket Kit - KTM 200/250 808319
MOOSE RACING
$74.51A complete engine and transmission rebuild demands gasket integrity that matches OEM specifications without the OEM price tag. This Moose Racing kit delivers genuine oil seals and precision-engineered gaskets across your entire powertrain, eliminating...09340469- SKU:
- 09340469
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$74.51 -
MOOSE RACING Motor Gasket Kit with Seal - 200SX/EXC 811319
MOOSE RACING
$98.45A complete engine and transmission rebuild demands precision gaskets and seals that fit right the first time—OEM quality without the premium price tag. This Moose Racing kit gives you everything needed for a full rebuild, engineered for durability and...09340470- SKU:
- 09340470
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$98.45 -
MOOSE RACING Top End Gasket Kit - 250SX/EXC 810323
MOOSE RACING
$32.09A top-end rebuild demands precision and reliability—and OEM gasket kits come with OEM pricing. The MOOSE RACING Top End Gasket Kit delivers complete engine sealing with U.S.-made materials at a fraction of the cost, so you can restore your 250SX/EXC...09340471- SKU:
- 09340471
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TOP END
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$32.09Qty in Cart: 0Quantity:Price:$32.09Subtotal: -
MOOSE RACING Top End Gasket Kit - RM250 810593
MOOSE RACING
$47.28A 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 OEM pricing, giving you the reliability needed for...09340973- SKU:
- 09340973
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- TOP END
$47.28 -
MOOSE RACING Inner Clutch Cover Gasket 816099
MOOSE RACING
$19.22A leaking clutch cover gasket compromises engine sealing and can lead to oil contamination and performance degradation. The MOOSE RACING Inner Clutch Cover Gasket (816099) delivers OEM-equivalent reliability at a fraction of OEM pricing, using high-tech...09346121- SKU:
- 09346121
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$19.22 -
MOOSE RACING Inner Clutch Cover Gasket 816130
MOOSE RACING
$8.55A failing clutch cover gasket leads to oil leakage, contamination, and potential engine damage—exactly what you can't afford during competition or a critical rebuild. The MOOSE RACING Inner Clutch Cover Gasket delivers OEM-equivalent sealing performance...09346122- SKU:
- 09346122
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$8.55 -
MOOSE RACING Inner Clutch Cover Gasket 816138
MOOSE RACING
$13.91Clutch cover gasket failures lead to oil seepage, loss of compression, and potential engine damage—especially critical if you're running a rebuilt or high-mileage engine. The MOOSE RACING Inner Clutch Cover Gasket delivers OEM-equivalent sealing...09346123- SKU:
- 09346123
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
$13.91Qty in Cart: 0Quantity:Price:$13.91Subtotal: -
MOOSE RACING Inner Clutch Cover Gasket 816149
MOOSE RACING
$12.69A leaking clutch cover gasket compromises engine sealing and invites oil contamination into your clutch assembly—a costly problem if left unaddressed. The MOOSE RACING Inner Clutch Cover Gasket delivers OEM-specification sealing at a fraction of OEM...09346124- SKU:
- 09346124
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CLUTCH COVER
- UNITS:
- EACH
- PRODUCT NAME:
- GASKET
$12.69 -
MOOSE RACING Motor Gasket Kit with Seal - Husqvarna/KTM 811373
MOOSE RACING
$179.68A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise durability or reliability. This MOOSE RACING kit eliminates the frustration of sourcing individual components at inflated OEM prices, giving you...09345369- SKU:
- 09345369
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$179.68Qty in Cart: 0Quantity:Price:$179.68Subtotal:
