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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On Sale
ATHENA Top End Gasket Kit - Honda P400210600221
ATHENA
MSRP: $76.95Now: $69.00Was: $76.95Whether you're prepping for race day or executing a midseason engine refresh, the ATHENA Top End Gasket Kit delivers the precision sealing your engine demands under high-load conditions. This kit gives you the flexibility to run either pump gas with...400210600221- SKU:
- 400210600221
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
MSRP: $76.95Now: $69.00Was: $76.95 -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600220
ATHENA
MSRP: $84.95Now: $76.00Was: $84.95Whether you're prepping for race day or executing a midseason engine refresh, the ATHENA Top End Gasket Kit ensures your Honda engine maintains peak sealing integrity under demanding conditions. This kit gives you the flexibility to run either standard...400210600220- SKU:
- 400210600220
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
MSRP: $84.95Now: $76.00Was: $84.95 -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600214
ATHENA
MSRP: $53.95Now: $49.00Was: $53.95Whether you're prepping for race day or performing a midseason engine refresh, the ATHENA Top End Gasket Kit ensures a proper seal across your engine's critical compression chamber. This kit gives you the flexibility to run standard pump gas with stock...400210600214- SKU:
- 400210600214
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $53.95Now: $49.00Was: $53.95Qty in Cart: 0Quantity:Price:MSRP: $53.95Now: $49.00Was: $53.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600210
ATHENA
MSRP: $34.95Now: $31.00Was: $34.95Engine freshness directly impacts race day performance, and the ATHENA Top End Gasket Kit gives you the precision sealing needed to maximize compression and fuel efficiency. Whether you're running stock gas with standard compression or stepping up to...400210600210- SKU:
- 400210600210
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
MSRP: $34.95Now: $31.00Was: $34.95 -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600126
ATHENA
MSRP: $33.95Now: $31.00Was: $33.95A fresh top end gasket kit is essential before hitting the track, ensuring a proper seal that maintains compression integrity and prevents mid-race failures. The ATHENA P400210600126 gives you the flexibility to optimize your engine for either pump gas...400210600126- SKU:
- 400210600126
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
MSRP: $33.95Now: $31.00Was: $33.95 -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600103
ATHENA
MSRP: $27.95Now: $25.00Was: $27.95When race season demands peak performance, engine reliability becomes non-negotiable. The ATHENA Top End Gasket Kit is engineered for riders who won't compromise on compression ratios or fuel choice—giving you the flexibility to run standard fuel with...400210600103- SKU:
- 400210600103
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
MSRP: $27.95Now: $25.00Was: $27.95 -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600087
ATHENA
MSRP: $18.85Now: $16.00Was: $18.85Whether you're prepping for race day or executing a midseason engine refresh, the ATHENA Top End Gasket Kit delivers the reliability you need when it matters most. This kit is engineered for pros and amateurs alike who demand precision between cylinder...400210600087- SKU:
- 400210600087
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
MSRP: $18.85Now: $16.00Was: $18.85Qty in Cart: 0Quantity:Price:MSRP: $18.85Now: $16.00Was: $18.85Subtotal: -
MOOSE RACING Gasket set with oil seal - YZ65 8110008
MOOSE RACING
$73.20A complete engine and transmission rebuild demands precision-fit components that won't compromise your reliability. MOOSE RACING's gasket and oil seal set delivers OEM-quality replacement parts at a fraction of the cost, allowing you to restore your YZ65...09346582- SKU:
- 09346582
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- ENGINE
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
$73.20 -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475014
ATHENA
MSRP: $47.95Now: $43.00Was: $47.95Coolant leaks and oil seepage compromise engine reliability and performance—two things you can't afford to ignore on the track or in your build. The ATHENA Water Pump Gasket Kit addresses these critical sealing points with OEM-quality gaskets and seals...09346062- SKU:
- 09346062
- Availability:
- Ships Same Business Day
- Weight:
- 0.27 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 2-STROKE
- TYPE:
- WATER PUMP
- UNITS:
- KIT
MSRP: $47.95Now: $43.00Was: $47.95 -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475013
ATHENA
MSRP: $27.95Now: $25.00Was: $27.95Proper gasket and seal integrity is critical to maintaining coolant circulation and preventing oil contamination in your Kawasaki engine. The ATHENA Water Pump Gasket Kit delivers OEM-equivalent sealing performance with quality materials designed to...09346061- SKU:
- 09346061
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $27.95Now: $25.00Was: $27.95 -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475010
ATHENA
MSRP: $61.95Now: $56.00Was: $61.95Kawasaki water pump gaskets deteriorate with heat cycles and mileage, leading to coolant leaks that compromise engine temperature regulation and risking overheating. The ATHENA Water Pump Gasket Kit provides OEM-equivalent sealing surfaces and shaft oil...09346058- SKU:
- 09346058
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $61.95Now: $56.00Was: $61.95Qty in Cart: 0Quantity:Price:MSRP: $61.95Now: $56.00Was: $61.95Subtotal: -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475008
ATHENA
MSRP: $50.95Now: $46.00Was: $50.95Gasket and seal failures are a common source of coolant leaks and oil seepage in high-performance Kawasaki engines—problems that can quickly escalate into catastrophic engine damage if left unaddressed. The ATHENA Water Pump Gasket Kit consolidates all...09346056- SKU:
- 09346056
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
MSRP: $50.95Now: $46.00Was: $50.95 -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475007
ATHENA
MSRP: $60.95Now: $55.00Was: $60.95Water pump gasket failure is one of the most common culprits behind coolant leaks and engine overheating in high-performance applications. The ATHENA Water Pump Gasket Kit delivers OEM-quality sealing surfaces with precision-engineered gaskets and shaft...09346055- SKU:
- 09346055
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- TYPE:
- WATER PUMP
MSRP: $60.95Now: $55.00Was: $60.95 -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475006
ATHENA
MSRP: $50.95Now: $46.00Was: $50.95Water pump gasket failure is one of the most common culprits behind coolant leaks and engine overheating, especially in high-performance applications where thermal stress is constant. The ATHENA Water Pump Gasket Kit gives you everything needed to...09346054- SKU:
- 09346054
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $50.95Now: $46.00Was: $50.95 -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475005
ATHENA
MSRP: $42.95Now: $39.00Was: $42.95Seal leaks before they start. The ATHENA Water Pump Gasket Kit provides all the critical gaskets and seals needed to maintain a watertight engine and prevent coolant loss that compromises performance and reliability. Whether you're rebuilding after...09346053- SKU:
- 09346053
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
MSRP: $42.95Now: $39.00Was: $42.95 -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475003
ATHENA
MSRP: $28.95Now: $26.00Was: $28.95Water pump gasket failure is a common culprit behind coolant leaks and engine overheating on high-performance Kawasaki engines. This OEM-equivalent kit provides all the gaskets and seals needed to restore a watertight seal, eliminating leaks that can...09346051- SKU:
- 09346051
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $28.95Now: $26.00Was: $28.95Qty in Cart: 0Quantity:Price:MSRP: $28.95Now: $26.00Was: $28.95Subtotal: -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475002
ATHENA
MSRP: $40.95Now: $37.00Was: $40.95A failing water pump gasket kit compromises your cooling system's integrity, leading to coolant leaks, overheating, and potential engine damage. The ATHENA Water Pump Gasket Kit restores a complete seal across critical pump and clutch cover interfaces,...09346050- SKU:
- 09346050
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
MSRP: $40.95Now: $37.00Was: $40.95 -
On Sale
ATHENA Water Pump Gasket Kit - Kawasaki P400250475001
ATHENA
MSRP: $40.95Now: $37.00Was: $40.95Water pump gasket failure is one of the most common causes of coolant leaks in Kawasaki engines, often going unnoticed until serious overheating occurs. This OEM gasket kit from ATHENA gives you all the sealing components needed for a complete water pump...09346049- SKU:
- 09346049
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $40.95Now: $37.00Was: $40.95 -
On Sale
ATHENA Complete Gasket Kit - Honda P400210850318
ATHENA
MSRP: $172.95Now: $156.00Was: $172.95A failed gasket can sideline your engine and compromise reliability when you need it most. The ATHENA Complete Gasket Kit delivers OEM-quality sealing across all critical surfaces, engineered with high-temperature materials and precision construction to...09345913- SKU:
- 09345913
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $172.95Now: $156.00Was: $172.95Qty in Cart: 0Quantity:Price:MSRP: $172.95Now: $156.00Was: $172.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Husqvarna P400270900083
ATHENA
MSRP: $210.95Now: $190.00Was: $210.95A complete gasket kit is essential for maintaining a reliable seal across all critical engine surfaces—especially when running high temperatures or pushing performance limits. The ATHENA P400270900083 combines proven gasket materials with precision...09345469- SKU:
- 09345469
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $210.95Now: $190.00Was: $210.95Qty in Cart: 0Quantity:Price:MSRP: $210.95Now: $190.00Was: $210.95Subtotal:
