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 - Husqvarna P400270600077
ATHENA
MSRP: $98.95Now: $85.00Was: $98.95Head gasket failure can sideline your engine and drain your wallet—the ATHENA Top End Gasket Kit is engineered to prevent catastrophic leaks and maintain compression integrity across extreme...09345465- SKU:
- 09345465
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
MSRP: $98.95Now: $85.00Was: $98.95 -
On Sale
ATHENA Complete Gasket Kit - Husqvarna P400270900077
ATHENA
MSRP: $243.95Now: $209.00Was: $243.95A complete gasket kit is your engine's first line of defense against compression loss, coolant leaks, and thermal stress. The ATHENA P400270900077 delivers OEM-equivalent sealing performance with...09345466- SKU:
- 09345466
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $243.95Now: $209.00Was: $243.95 -
On Sale
ATHENA Top End Gasket Kit - Husqvarna P400270600078
ATHENA
MSRP: $102.95Now: $88.00Was: $102.95A quality top-end gasket kit is essential for maintaining cylinder head integrity and preventing coolant or oil leakage under high-temperature operating conditions. The ATHENA P400270600078 combines...09345471- SKU:
- 09345471
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $102.95Now: $88.00Was: $102.95 -
On Sale
ATHENA Complete Gasket Kit - Husqvarna P400270900078
ATHENA
MSRP: $192.95Now: $165.00Was: $192.95Gasket failure is one of the most common culprits behind coolant leaks, compression loss, and catastrophic engine damage—especially under high heat and boost conditions. The ATHENA Complete Gasket...09345472- SKU:
- 09345472
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $192.95Now: $165.00Was: $192.95Qty in Cart: 0Quantity:Price:MSRP: $192.95Now: $165.00Was: $192.95Subtotal: -
On Sale
ATHENA Race Gasket Kit - Husqvarna R2706-079
ATHENA
MSRP: $57.95Now: $52.00Was: $57.95Factory gasket seals degrade under sustained high-temperature racing conditions, leading to compression loss and potential engine damage. The ATHENA Race Gasket Kit delivers the thermal stability and...09345474- SKU:
- 09345474
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $57.95Now: $52.00Was: $57.95 -
On Sale
ATHENA Top End Gasket Kit - Husqvarna P400270600079
ATHENA
MSRP: $129.95Now: $117.00Was: $129.95Head gasket failure can strand you trackside or leave your engine compromised. The ATHENA Top End Gasket Kit delivers dependable sealing across extreme temperature swings, ensuring your Husqvarna...09345475- SKU:
- 09345475
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $129.95Now: $117.00Was: $129.95 -
On Sale
ATHENA Race Gasket Kit - Husqvarna R2706-081
ATHENA
MSRP: $71.95Now: $61.00Was: $71.95Head gasket failure can end your race day before it starts—and the ATHENA Race Gasket Kit R2706-081 is engineered to prevent that. Built with rubber-coated spring steel construction and...09345478- SKU:
- 09345478
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
MSRP: $71.95Now: $61.00Was: $71.95 -
On Sale
ATHENA Top End Gasket Kit - Husqvarna P400270600081
ATHENA
MSRP: $103.95Now: $89.00Was: $103.95Head gasket failure can cost you races and credibility. The ATHENA Top End Gasket Kit is engineered to maintain a perfect seal under extreme combustion pressures and thermal cycling, ensuring your...09345479- SKU:
- 09345479
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $103.95Now: $89.00Was: $103.95 -
On Sale
ATHENA Complete Gasket Kit - Husqvarna P400270900081
ATHENA
MSRP: $188.95Now: $170.00Was: $188.95A complete gasket kit is the foundation of a reliable engine—seal failure leads to oil leaks, compression loss, and catastrophic damage. The ATHENA Complete Gasket Kit for your Husqvarna...09345480- SKU:
- 09345480
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
MSRP: $188.95Now: $170.00Was: $188.95 -
On Sale
ATHENA Top End Gasket Kit - Kawasaki P400250600067
ATHENA
MSRP: $87.95Now: $79.00Was: $87.95Head gasket failure means downtime and costly engine damage—especially when you're pushing performance limits. The ATHENA Top End Gasket Kit delivers reliable sealing across extreme temperature...09345484- SKU:
- 09345484
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $87.95Now: $79.00Was: $87.95Qty in Cart: 0Quantity:Price:MSRP: $87.95Now: $79.00Was: $87.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Kawasaki P400250900067
ATHENA
MSRP: $245.95Now: $221.00Was: $245.95Gasket failure leads to compression loss, coolant leaks, and catastrophic engine damage—especially under high RPM or forced induction loads. The ATHENA Complete Gasket Kit eliminates these risks with...09345485- SKU:
- 09345485
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $245.95Now: $221.00Was: $245.95 -
On Sale
ATHENA Complete Gasket Kit - Suzuki P400510900095
ATHENA
MSRP: $246.95Now: $222.00Was: $246.95Gasket failure can compromise your engine's integrity and leave you stranded mid-season. The ATHENA Complete Gasket Kit delivers OEM-equivalent sealing performance with premium materials engineered...09345488- SKU:
- 09345488
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $246.95Now: $222.00Was: $246.95Qty in Cart: 0Quantity:Price:MSRP: $246.95Now: $222.00Was: $246.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Suzuki P400510900098
ATHENA
MSRP: $221.95Now: $200.00Was: $221.95Gasket failure can compromise your entire engine's integrity, leading to compression loss, coolant leaks, and catastrophic damage. The ATHENA Complete Gasket Kit is engineered to maintain a reliable...09345489- SKU:
- 09345489
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $221.95Now: $200.00Was: $221.95 -
On Sale
ATHENA Complete Gasket Kit - KTM/Husqvarna P400270160082
ATHENA
MSRP: $71.95Now: $65.00Was: $71.95When rebuilding a KTM or Husqvarna top-end, gasket failure isn't an option. This Athena complete gasket kit eliminates guesswork by delivering OEM-quality seals engineered to withstand extreme...09345491- SKU:
- 09345491
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- ENGINE TYPE:
- -
- UNITS:
- KIT
- BORE SIZE METRIC:
- 82.00 MM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
MSRP: $71.95Now: $65.00Was: $71.95 -
On Sale
ATHENA Race Gasket Kit - Kawasaki R2506-065
ATHENA
MSRP: $44.95Now: $40.00Was: $44.95Whether you're prepping for race day or executing a mid-season engine refresh, compression ratio directly impacts your engine's power delivery and fuel efficiency. The ATHENA Race Gasket Kit gives...09345863- SKU:
- 09345863
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
- TYPE:
- TOP END
MSRP: $44.95Now: $40.00Was: $44.95 -
On Sale
ATHENA Race Gasket Kit - Kawasaki R2506-066
ATHENA
MSRP: $53.95Now: $49.00Was: $53.95Engine gasket condition is critical to maintaining compression integrity and preventing mid-race failures. The ATHENA Race Gasket Kit gives you the flexibility to optimize your compression ratio...09345864- SKU:
- 09345864
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
MSRP: $53.95Now: $49.00Was: $53.95 -
On Sale
ATHENA Complete Gasket Kit - Kawasaki P400250900066
ATHENA
MSRP: $268.95Now: $242.00Was: $268.95Whether you're prepping for race day or executing a mid-season engine refresh, the ATHENA Complete Gasket Kit gives you the flexibility to optimize your compression ratio without a full engine...09345865- SKU:
- 09345865
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
MSRP: $268.95Now: $242.00Was: $268.95Qty in Cart: 0Quantity:Price:MSRP: $268.95Now: $242.00Was: $268.95Subtotal: -
On Sale
ATHENA Water Pump Gasket Kit - Honda P400210475001
ATHENA
MSRP: $39.95Now: $34.00Was: $39.95A failing water pump gasket doesn't just leak—it compromises your engine's cooling efficiency and invites corrosion that spreads throughout your cooling system. The ATHENA Water Pump Gasket Kit gives...09346037- SKU:
- 09346037
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
MSRP: $39.95Now: $34.00Was: $39.95Qty in Cart: 0Quantity:Price:MSRP: $39.95Now: $34.00Was: $39.95Subtotal: -
On Sale
ATHENA Water Pump Gasket Kit - Honda P400210475002
ATHENA
MSRP: $35.95Now: $31.00Was: $35.95Cooling system integrity depends on proper sealing, and worn gaskets are a leading cause of coolant leaks and overheating. The ATHENA Water Pump Gasket Kit delivers OEM-equivalent sealing surfaces...09346038- SKU:
- 09346038
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $35.95Now: $31.00Was: $35.95 -
On Sale
ATHENA Water Pump Gasket Kit - Honda P400210475003
ATHENA
MSRP: $27.95Now: $25.00Was: $27.95Cooling system integrity depends on reliable gasket sealing, and worn or compromised gaskets lead to coolant leaks, overheating, and potential engine damage. The ATHENA Water Pump Gasket Kit supplies...09346039- SKU:
- 09346039
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $27.95Now: $25.00Was: $27.95Qty in Cart: 0Quantity:Price:MSRP: $27.95Now: $25.00Was: $27.95Subtotal:
