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
-
PROX Water Pump Rebuild Kit - Yamaha 57.2122
PROX
$36.95A failing water pump compromises engine cooling efficiency and risks catastrophic overheating—especially critical under racing conditions or sustained high-performance driving. The PROX 57.2122...09347005- SKU:
- 09347005
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$36.95 -
PROX Water Pump Rebuild Kit - Yamaha 57.2218
PROX
$36.95A worn water pump compromises cooling efficiency and risks catastrophic engine damage—especially critical in high-performance applications where thermal management directly impacts reliability and...09347006- SKU:
- 09347006
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$36.95Qty in Cart: 0Quantity:Price:$36.95Subtotal: -
PROX Water Pump Rebuild Kit - Yamaha 57.2225
PROX
$36.95Water pump failure can leave you stranded and cause catastrophic engine damage from overheating. The PROX Water Pump Rebuild Kit gives you factory-quality internal components to restore cooling...09347007- SKU:
- 09347007
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$36.95 -
PROX Water Pump Rebuild Kit - Yamaha 57.2318
PROX
$44.95A failing water pump can compromise your engine's thermal stability and lead to catastrophic overheating—especially under racing conditions or extended high-load operation. The PROX Water Pump...09347009- SKU:
- 09347009
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$44.95 -
PROX Water Pump Rebuild Kit - Yamaha 57.2319
PROX
$36.95A failing water pump compromises your engine's cooling efficiency, risking catastrophic overheating during high-performance operation. The PROX 57.2319 Rebuild Kit lets you restore your Yamaha water...09347010- SKU:
- 09347010
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$36.95 -
PROX Water Pump Rebuild Kit - Yamaha 57.2320
PROX
$34.95A failing water pump compromises engine cooling efficiency and risks catastrophic overheating—especially under racing conditions or sustained high-RPM operation. The PROX Water Pump Rebuild Kit for...09347011- SKU:
- 09347011
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$34.95Qty in Cart: 0Quantity:Price:$34.95Subtotal: -
PROX Water Pump Rebuild Kit - Yamaha 57.2321
PROX
$36.95A failing water pump compromises engine cooling efficiency and risks catastrophic overheating, especially under racing conditions or sustained high-RPM operation. This PROX rebuild kit restores your...09347012- SKU:
- 09347012
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- REPAIR KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$36.95 -
PROX Water Pump Rebuild Kit - Yamaha 57.2324
PROX
$36.95A failing water pump compromises your engine's cooling efficiency and risks catastrophic overheating during high-performance operation. The PROX Water Pump Rebuild Kit restores OEM cooling...09347013- SKU:
- 09347013
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$36.95 -
PROX Water Pump Rebuild Kit - Yamaha 57.2423
PROX
$36.95A failing water pump can silently compromise your engine's cooling system, leading to thermal stress and catastrophic failure during peak performance. The PROX Water Pump Rebuild Kit restores your...09347014- SKU:
- 09347014
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$36.95 -
PROX Water Pump Rebuild Kit - Yamaha 57.2424
PROX
$36.95A failing water pump compromises your engine's cooling efficiency and can lead to catastrophic overheating during critical race conditions or extended ride sessions. The PROX Water Pump Rebuild Kit...09347015- SKU:
- 09347015
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- TYPE:
- WATER PUMP
$36.95 -
PROX Water Pump Rebuild Kit - Yamaha 57.2425
PROX
$31.95A failing water pump compromises engine cooling efficiency and risks catastrophic overheating—especially critical in high-performance or race applications where thermal management directly impacts...09347016- SKU:
- 09347016
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$31.95 -
PROX Water Pump Rebuild Kit - Yamaha 57.2426
PROX
$36.95A water pump failure can leave you stranded on the track or trail, and replacement costs add up fast. The PROX Water Pump Rebuild Kit for Yamaha gives you a cost-effective way to restore your pump to...09347017- SKU:
- 09347017
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$36.95 -
PROX Water Pump Rebuild Kit - Suzuki 57.3023
PROX
$43.74A failing water pump compromises cooling efficiency and risks catastrophic engine damage—especially under racing conditions where thermal management is non-negotiable. The PROX 57.3023 Rebuild Kit...09347024- SKU:
- 09347024
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$43.74Qty in Cart: 0Quantity:Price:$43.74Subtotal: -
PROX Water Pump Rebuild Kit - Suzuki 57.3111
PROX
$34.95A failing water pump compromises engine cooling efficiency and risks catastrophic overheating, especially under racing conditions or sustained high-performance driving. The PROX Water Pump Rebuild...09347025- SKU:
- 09347025
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$34.95 -
PROX Water Pump Rebuild Kit - Suzuki 57.3122
PROX
$34.95Water pump failure can strand you mid-race or leave your engine overheating on the track. This PROX rebuild kit gives you OEM-quality seals, gaskets, and internal components to restore your water...09347026- SKU:
- 09347026
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$34.95Qty in Cart: 0Quantity:Price:$34.95Subtotal: -
PROX Water Pump Rebuild Kit - Suzuki 57.3212
PROX
$52.95A worn water pump compromises cooling efficiency and risks catastrophic engine failure. This PROX rebuild kit restores your Suzuki's cooling system to OEM specifications with precision-engineered...09347027- SKU:
- 09347027
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REPAIR KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$52.95 -
PROX Water Pump Rebuild Kit - Suzuki 57.3327
PROX
$25.95A failing water pump doesn't just compromise cooling efficiency—it risks catastrophic engine damage. The PROX Water Pump Rebuild Kit for Suzuki gives you OEM-equivalent performance and reliability...09347031- SKU:
- 09347031
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$25.95 -
PROX Water Pump Rebuild Kit - Suzuki 57.3420
PROX
$67.95A failing water pump can silently compromise your engine's thermal management, leading to overheating and catastrophic failure during critical race sessions or trail runs. The PROX Water Pump Rebuild...09347032- SKU:
- 09347032
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- KIT
- TYPE:
- WATER PUMP
- PRODUCT NAME:
- REPAIR KIT
- RIDING STYLE:
- STREET
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
$67.95 -
PROX Water Pump Rebuild Kit - Suzuki 57.3423
PROX
$34.95A water pump failure can sideline your engine and derail race day plans. The PROX Water Pump Rebuild Kit for Suzuki engines gives you OEM-quality replacement seals, bearings, and gaskets to restore...09347034- SKU:
- 09347034
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
- PRODUCT NAME:
- REPAIR KIT
$34.95Qty in Cart: 0Quantity:Price:$34.95Subtotal: -
PROX Water Pump Rebuild Kit - Kawasaki 57.4023
PROX
$39.95A failing water pump can compromise your engine's thermal management and lead to costly damage—especially in high-performance applications where precision cooling is critical. The PROX Water Pump...09347039- SKU:
- 09347039
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- REPAIR KIT
$39.95Qty in Cart: 0Quantity:Price:$39.95Subtotal:
