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 - YZ80 808613
MOOSE RACING
$43.80A complete engine rebuild demands precision gaskets and seals that won't compromise your YZ80's performance or longevity. The MOOSE RACING Complete Motor Gasket Kit eliminates the hassle of sourcing individual components while delivering the reliability...M808613- SKU:
- M808613
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$43.80 -
MOOSE RACING Motor Gasket Kit with Seal - KDX250 811458
MOOSE RACING
$108.33A complete engine and transmission rebuild demands precision-fitted gaskets and seals—any mismatch or failure can compromise performance and reliability. The MOOSE RACING Motor Gasket Kit delivers OEM-equivalent sealing at a fraction of dealer pricing,...M811458- SKU:
- M811458
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- KIT
- TYPE:
- ENGINE
$108.33 -
MOOSE RACING Motor Gasket Kit with Seal - KLX300 811461
MOOSE RACING
$98.45A complete engine and transmission rebuild demands precision gaskets and seals that fit right the first time—OEM quality without the OEM price tag. This Moose Racing kit eliminates the frustration of sourcing individual components, giving you every...M811461- SKU:
- M811461
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$98.45 -
MOOSE RACING Motor Gasket Kit with Seal - RM250 811577
MOOSE RACING
$90.04Engine and transmission rebuilds demand precision-fit gaskets and seals that won't compromise reliability or break your budget. The MOOSE RACING Motor Gasket Kit delivers OEM-equivalent quality at a fraction of dealer pricing, giving you the confidence...M811577- SKU:
- M811577
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$90.04 -
MOOSE RACING Motor Gasket Kit with Seal - RMX250 811578
MOOSE RACING
$90.04A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or your wallet. This MOOSE RACING kit delivers OEM-equivalent quality at a fraction of the cost, letting you rebuild with confidence...M811578- SKU:
- M811578
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- UNITS:
- KIT
$90.04 -
MOOSE RACING Complete Motor Gasket Kit - YZ250 808664
MOOSE RACING
$51.07A complete engine rebuild demands precision gaskets and seals that won't fail under race conditions or heavy use. This Moose Racing kit eliminates the guesswork of sourcing individual components—you get every gasket, o-ring, and seal needed for the...M808664- SKU:
- M808664
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$51.07Qty in Cart: 0Quantity:Price:$51.07Subtotal: -
MOOSE RACING Complete Motor Gasket Kit - YZ250 808665
MOOSE RACING
$51.07A complete engine and transmission rebuild demands gasket and seal integrity—factory tolerances leave no room for compromise. This Moose Racing kit delivers OEM-equivalent reliability at a fraction of the cost, giving you confidence that every critical...M808665- SKU:
- M808665
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$51.07 -
MOOSE RACING Complete Motor Gasket Kit - YZ250 808666
MOOSE RACING
$48.17A complete engine and transmission rebuild demands precision gasket and seal replacement—compromised sealing surfaces invite oil leaks, contamination, and catastrophic failure. The MOOSE RACING Complete Motor Gasket Kit eliminates guesswork by bundling...M808666- SKU:
- M808666
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$48.17 -
MOOSE RACING Complete Motor Gasket Kit - YZ250 808668
MOOSE RACING
$61.34A complete engine and transmission rebuild demands gasket and seal integrity—any compromise leads to leaks, loss of compression, and catastrophic failure. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-quality sealing components at a fraction of...M808668- SKU:
- M808668
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$61.34 -
MOOSE RACING Top End Gasket Kit - YZ 80 810611
MOOSE RACING
$18.96A top-end rebuild demands precision gaskets and seals that won't compromise your engine's integrity or your wallet. The MOOSE RACING Top End Gasket Kit delivers OEM-quality components at a fraction of the cost, giving you the confidence to reassemble...M810611- SKU:
- M810611
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$18.96 -
MOOSE RACING Top End Gasket Kit - YZ 80 810612
MOOSE RACING
$18.96A top-end rebuild demands precision gaskets and seals that won't compromise your engine's integrity or your wallet. The MOOSE RACING Top End Gasket Kit delivers OEM-quality components at a fraction of the cost, using high-tech materials engineered for...M810612- SKU:
- M810612
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$18.96Qty in Cart: 0Quantity:Price:$18.96Subtotal: -
MOOSE RACING Top End Gasket Kit - YZ 80 810613
MOOSE RACING
$21.90When you're rebuilding a YZ 80 top end, using OEM-equivalent gaskets and seals isn't optional—it's essential for preventing oil leaks, maintaining compression, and ensuring your engine performs reliably. The MOOSE RACING Top End Gasket Kit gives you...M810613- SKU:
- M810613
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$21.90Qty in Cart: 0Quantity:Price:$21.90Subtotal: -
MOOSE RACING Top End Gasket Kit - YZ 85 810614
MOOSE RACING
$24.35A top-end rebuild demands precision gaskets and seals that won't compromise your engine's integrity or your wallet. The MOOSE RACING Top End Gasket Kit delivers OEM-quality components at a fraction of the cost, allowing you to confidently refresh your YZ...M810614- SKU:
- M810614
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$24.35 -
MOOSE RACING Complete Motor Gasket Kit 808372
MOOSE RACING
$127.66A complete engine and transmission rebuild demands 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...09345878- SKU:
- 09345878
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- TYPE:
- COMPLETE
$127.66 -
MOOSE RACING Complete Motor Gasket Kit - KTM/Husqvarna 808376
MOOSE RACING
$130.03A complete engine and transmission rebuild demands precision gaskets and seals that won't fail under load. The MOOSE RACING Complete Motor Gasket Kit eliminates the guesswork of sourcing individual components, giving you every gasket, o-ring, and seal...09345879- SKU:
- 09345879
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$130.03Qty in Cart: 0Quantity:Price:$130.03Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - RM125 811549
MOOSE RACING
$102.28A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or your budget. This MOOSE RACING gasket kit eliminates the guesswork and expense of sourcing OEM components individually, giving you...M811549- SKU:
- M811549
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$102.28 -
MOOSE RACING Motor Gasket Kit with Seal - RM250 811574
MOOSE RACING
$80.18A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or your wallet. Moose Racing's motor gasket kit delivers OEM-quality components at a fraction of dealership pricing, so you can rebuild...M811574- SKU:
- M811574
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$80.18 -
MOOSE RACING Motor Gasket Kit with Seal - RM250 811575
MOOSE RACING
$90.04A complete engine and transmission rebuild demands gaskets and seals that match OEM specifications without the OEM price tag. This MOOSE RACING kit eliminates sourcing individual components by bundling everything you need in one purchase, letting you...M811575- SKU:
- M811575
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$90.04 -
MOOSE RACING Motor Gasket Kit with Seal - YZ80 811612
MOOSE RACING
$49.23A complete engine and transmission rebuild demands precision components that won't compromise your performance or reliability. MOOSE Racing's gasket and seal kit eliminates the guesswork of sourcing individual seals and gaskets, delivering genuine...M811612- SKU:
- M811612
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$49.23 -
MOOSE RACING Motor Gasket Kit with Oil Seal - 50 Adventure A/C 811314
MOOSE RACING
$40.75A complete engine and transmission rebuild demands precision components that won't compromise reliability or drain your wallet. This MOOSE RACING Motor Gasket Kit delivers OEM-quality seals and gaskets at a fraction of dealership pricing, letting you...09340467- SKU:
- 09340467
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
$40.75
