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 - CR125R 810233
MOOSE RACING
$42.36When you're rebuilding a CR125R top end, gasket failure isn't an option—it compromises compression, invites oil leakage, and can sideline your bike mid-season. The MOOSE RACING Top End Gasket Kit...M810233- SKU:
- M810233
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$42.36 -
MOOSE RACING Top End Gasket Kit - CR125 810235
MOOSE RACING
$37.29A top-end rebuild demands precision components that won't compromise reliability or performance. The MOOSE RACING Gasket Kit delivers OEM-quality seals at a fraction of the cost, giving you complete...M810235- SKU:
- M810235
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$37.29Qty in Cart: 0Quantity:Price:$37.29Subtotal: -
MOOSE RACING Top End Gasket Kit - CR250 810251
MOOSE RACING
$17.46A top-end rebuild demands precision gaskets and seals that match OEM specifications without the premium OEM price tag. The MOOSE RACING gasket kit delivers complete coverage for CR250 rebuilds—every...M810251- SKU:
- M810251
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$17.46 -
MOOSE RACING Top End Gasket Kit - CR250R 810252
MOOSE RACING
$21.90When you're rebuilding a CR250R top end, gasket failure isn't an option. This Moose Racing kit eliminates the guesswork by delivering every seal, O-ring, and gasket you need in one package—all...M810252- SKU:
- M810252
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$21.90 -
MOOSE RACING Top End Gasket Kit - CR250R 810253
MOOSE RACING
$23.33A top-end rebuild demands precision and reliability—cutting corners on gaskets and seals will cost you on track or trail. This Moose Racing kit eliminates the guesswork by bundling every gasket,...M810253- SKU:
- M810253
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$23.33 -
K&S TECHNOLOGIES Water Pump Repair Kit - CR85R 75-1008
K&S TECHNOLOGIES
$32.95A leaking water pump doesn't just waste coolant—it compromises engine temperature stability and can lead to catastrophic overheating on the track or trail. The K&S Technologies Water Pump Repair Kit...09342879- SKU:
- 09342879
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP REPAIR
- UNITS:
- KIT
$32.95Qty in Cart: 0Quantity:Price:$32.95Subtotal: -
MOOSE RACING Complete Motor Gasket Kit with Oil Seals - KTM/Husqvarna 8110009
MOOSE RACING
$135.40A complete engine and transmission rebuild demands precision gaskets and seals that won't fail under racing conditions or heavy use. This Moose Racing kit eliminates the guesswork of sourcing...09346448- SKU:
- 09346448
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$135.40 -
On Sale
VESRAH Complete Gasket Kit - YZ100 VG-2010
VESRAH
MSRP: $30.81Now: $29.27Was: $30.81A complete engine rebuild demands precision sealing at every junction, and substandard gaskets compromise compression, leak oil, and fail prematurely. The VESRAH Complete Gasket Kit VG-2010 supplies...VG2010- SKU:
- VG2010
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
MSRP: $30.81Now: $29.27Was: $30.81 -
WINDEROSA Complete Gasket Kit - Yamaha 1100 611604
WINDEROSA
$190.78Engine gasket failure is one of the fastest paths to catastrophic engine damage—and the last thing you need mid-season is oil leaking past a degraded seal or coolant seeping through a failed head...PD811540- SKU:
- PD811540
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- COMPLETE
- UNITS:
- SET
$190.78 -
MOOSE RACING Complete Gasket Kit with Oil Seal - KX 811417
MOOSE RACING
$73.14A complete engine and transmission rebuild requires 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...09340875- SKU:
- 09340875
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$73.14 -
MOOSE RACING Complete Gasket and Oil Seal Kit 811337
MOOSE RACING
$107.09A complete engine and transmission rebuild requires precision-fit gaskets and seals that won't compromise your work or reliability. The MOOSE RACING Complete Gasket and Oil Seal Kit eliminates the...09341905- SKU:
- 09341905
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$107.09 -
MOOSE RACING Motor Gasket Kit with Seal - CR125 811231
MOOSE RACING
$90.04A complete engine and transmission rebuild demands precision-fit gaskets and seals that won't compromise your work or wallet. MOOSE Racing delivers genuine OEM-equivalent seals at a fraction of OEM...M811231- SKU:
- M811231
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- TYPE:
- ENGINE
$90.04 -
MOOSE RACING Motor Gasket Kit with Seal - CR125 811232
MOOSE RACING
$91.46A complete engine and transmission rebuild demands precision gaskets and seals—factory tolerances won't tolerate improvisation. The MOOSE RACING Motor Gasket Kit delivers OEM-equivalent performance...M811232- SKU:
- M811232
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET
- TYPE:
- ENGINE
- UNITS:
- KIT
$91.46 -
MOOSE RACING Motor Gasket Kit with Seal - CR125 811233
MOOSE RACING
$99.86A complete engine and transmission rebuild requires gaskets and seals that won't fail under load. The MOOSE RACING Motor Gasket Kit eliminates the frustration of sourcing individual components from...M811233- SKU:
- M811233
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$99.86Qty in Cart: 0Quantity:Price:$99.86Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - YZ250 811663
MOOSE RACING
$68.97A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work or your wallet. This MOOSE RACING Motor Gasket Kit delivers OEM-quality components at a...M811663- SKU:
- M811663
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- UNITS:
- KIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$68.97 -
MOOSE RACING Motor Gasket Kit with Seal - YZ250 811664
MOOSE RACING
$68.97A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your work—and OEM replacements drain your budget fast. The MOOSE RACING Motor Gasket Kit delivers...M811664- SKU:
- M811664
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- TYPE:
- ENGINE
$68.97 -
MOOSE RACING Motor Gasket Kit with Seal - YZ250 811666
MOOSE RACING
$64.70A complete engine and transmission rebuild demands precision-fit gaskets and seals—and OEM pricing shouldn't dictate your budget. This Moose Racing Motor Gasket Kit delivers genuine OEM-quality...M811666- SKU:
- M811666
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- TYPE:
- ENGINE
$64.70 -
MOOSE RACING Motor Gasket Kit with Seal - YZ250 811667
MOOSE RACING
$84.39A complete engine and transmission rebuild demands precision gaskets and seals that won't compromise your YZ250's reliability or performance. This Moose Racing kit eliminates the guesswork of...M811667- SKU:
- M811667
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- COMPLETE
$84.39 -
MOOSE RACING Motor Gasket Kit with Seal - YZ250 811668
MOOSE RACING
$81.65A complete engine and transmission rebuild demands OEM-quality gaskets and seals without the OEM price tag. This Moose Racing Motor Gasket Kit delivers genuine oil seals paired with precision-formed...M811668- SKU:
- M811668
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- ENGINE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$81.65Qty in Cart: 0Quantity:Price:$81.65Subtotal: -
MOOSE RACING Motor Gasket Kit with Seal - YZ250 811669
MOOSE RACING
$80.18A complete engine and transmission rebuild demands precision components that won't compromise durability or break your budget. The MOOSE RACING Motor Gasket Kit eliminates the guesswork by bundling...M811669- SKU:
- M811669
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$80.18
