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 - XR80 811207
MOOSE RACING
$70.33A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work—OEM-spec components at a fraction of the cost. MOOSE Racing delivers genuine...M811207- SKU:
- M811207
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$70.33 -
MOOSE RACING Motor Gasket Kit with Seal - XR80 811208
MOOSE RACING
$89.83A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work or drain your budget. The MOOSE RACING Motor Gasket Kit delivers OEM-quality replacement...M811208- SKU:
- M811208
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- UNITS:
- KIT
$89.83 -
MOOSE RACING Motor Gasket Kit with Seal - XR100 811221
MOOSE RACING
$92.89A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work—or your wallet. This MOOSE RACING kit delivers OEM-quality components at a fraction of...M811221- SKU:
- M811221
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$92.89 -
MOOSE RACING Motor Gasket Kit with Seal - CR125 811236
MOOSE RACING
$102.70A complete engine and transmission rebuild demands gaskets and seals that match OEM precision without the premium price tag. This MOOSE RACING kit eliminates the need to source components piecemeal,...M811236- SKU:
- M811236
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
$102.70 -
MOOSE RACING Complete Motor Gasket Kit - KX250F 808984
MOOSE RACING
$142.06A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work. The MOOSE RACING Complete Motor Gasket Kit delivers OEM-quality components at a...09345881- SKU:
- 09345881
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$142.06Qty in Cart: 0Quantity:Price:$142.06Subtotal: -
MOOSE RACING Complete Motor Gasket Kit - CRF450R/RX 808989
MOOSE RACING
$179.72A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise performance or longevity. The MOOSE RACING Complete Motor Gasket Kit eliminates the guesswork and...09345882- SKU:
- 09345882
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$179.72 -
MOOSE RACING Complete Motor Gasket Kit - 250 EXC-F 808990
MOOSE RACING
$130.03A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work. This MOOSE RACING kit eliminates the frustration of sourcing individual components,...09345883- SKU:
- 09345883
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$130.03 -
MOOSE RACING Top End Gasket Kit Yamaha 810977
MOOSE RACING
$67.11A top-end rebuild demands precision-fit gaskets and seals that won't compromise your engine's integrity or performance. The MOOSE RACING Top End Gasket Kit delivers OEM-quality replacement seals at a...09345884- SKU:
- 09345884
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$67.11 -
MOOSE RACING Top End Gasket Kit Kawasaki 810984
MOOSE RACING
$93.21A top-end rebuild demands precision-fit gaskets and seals that won't compromise your engine's integrity or performance. The MOOSE RACING Top End Gasket Kit delivers OEM-equivalent quality at a...09345885- SKU:
- 09345885
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
$93.21 -
MOOSE RACING Top End Gasket Kit - KLX/DRZ 810585
MOOSE RACING
$57.30A 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 gives you every component needed for a...M810585- SKU:
- M810585
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 94.00 MM
- BORE SIZE:
- 94,00 MM
- ENGINE TYPE:
- 4-STROKE
- UNITS:
- KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
$57.30 -
MOOSE RACING Top End Gasket Kit - DR 650 810586
MOOSE RACING
$35.01A top-end rebuild demands precision and reliability—any compromise on gasket quality will compromise your engine's integrity. The MOOSE RACING Top End Gasket Kit eliminates guesswork by providing...M810586- SKU:
- M810586
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$35.01 -
MOOSE RACING Top End Gasket Kit - YZ 125 810630
MOOSE RACING
$21.90A top-end rebuild demands precision gaskets and seals that won't compromise your engine's reliability or performance. The MOOSE RACING Top End Gasket Kit delivers OEM-quality components at a fraction...M810630- SKU:
- M810630
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$21.90 -
MOOSE RACING Top End Gasket Kit - YZ 125 810631
MOOSE RACING
$24.85A top-end rebuild demands precision gaskets and seals that won't compromise your engine's integrity or cost you a fortune. This Moose Racing kit gives you every component needed to reassemble your YZ...M810631- SKU:
- M810631
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$24.85 -
MOOSE RACING Top End Gasket Kit - YZ 125 810632
MOOSE RACING
$24.85When you're rebuilding a YZ 125 top end, gasket integrity determines whether your engine runs flawlessly or develops leaks that compromise performance. This Moose Racing gasket kit delivers...M810632- SKU:
- M810632
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$24.85Qty in Cart: 0Quantity:Price:$24.85Subtotal: -
MOOSE RACING Top End Gasket Kit - YZ 125 810633
MOOSE RACING
$24.85A top-end rebuild demands precision-fit gaskets and seals—any compromise risks oil leaks, compression loss, and premature wear. The MOOSE RACING Top End Gasket Kit delivers OEM-quality replacement...M810633- SKU:
- M810633
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$24.85 -
MOOSE RACING Top End Gasket Kit - YZ 250 810661
MOOSE RACING
$29.14A top-end rebuild demands precision gaskets and seals that won't compromise reliability or performance. The MOOSE RACING Top End Gasket Kit delivers OEM-quality components at a fraction of the cost,...M810661- SKU:
- M810661
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$29.14 -
MOOSE RACING Top End Gasket Kit - CR80 810205
MOOSE RACING
$24.85A top-end rebuild demands precision and reliability—and OEM gasket kits come with OEM pricing. The MOOSE RACING Top End Gasket Kit delivers genuine OEM replacement seals paired with high-tech...M810205- SKU:
- M810205
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$24.85Qty in Cart: 0Quantity:Price:$24.85Subtotal: -
MOOSE RACING Top End Gasket Kit - CR80R 810206
MOOSE RACING
$26.26A top-end rebuild demands precision and reliability—cutting corners on gaskets and seals is how engines fail. This Moose Racing kit gives you OEM-quality seals and gaskets at a fraction of the cost,...M810206- SKU:
- M810206
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$26.26 -
MOOSE RACING Top End Gasket Kit - XR80 810207
MOOSE RACING
$26.26A quality gasket kit is essential when rebuilding your XR80's top end—OEM replacements come with premium pricing, but this Moose Racing set delivers the same reliability at a fraction of the cost...M810207- SKU:
- M810207
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$26.26 -
MOOSE RACING Top End Gasket Kit - CR250R 810255
MOOSE RACING
$26.26A 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...M810255- SKU:
- M810255
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$26.26Qty in Cart: 0Quantity:Price:$26.26Subtotal:
