Dirt Bike Engine Rebuild Kits
Dirt Bike Engine Rebuild Kits for Kawasaki KX100, KTM XC-W 250 & Honda CRF250R at JJ Motorsports
Revive your dirt bike's engine to factory-fresh performance with premium rebuild kits from JJ Motorsports, featuring forged pistons, crankshafts, bearings, seals, and gaskets for superior compression, reduced vibration, and long-term reliability in motocross, enduro, and trail riding. Our selection includes complete top- and bottom-end kits designed for precise fitment, optimal oil flow, and enhanced power delivery without custom machining. Compatible with popular models like Kawasaki KX100, KTM XC/XC-W 250, Husqvarna TE250, and Honda CRF250R, these high-quality components from trusted brands ensure leak-free assembly, better heat management, and race-ready durability in dusty, high-RPM conditions. From Wiseco's comprehensive KX100 kits with hour meters to Vertex's all-in-one KTM rebuilds and Athena's high-performance CRF pistons, get everything needed for a pro-level refresh—pistons, rings, bearings, and gaskets—to restore throttle snap, efficiency, and confidence on every rip.
Shop brands like Wiseco, Vertex, and Athena for race-proven quality. Explore related categories such as dirt bike piston and ring kits for top-end focus or dirt bike engine for cylinders and valves.
Top Dirt Bike Engine Rebuild Kits
- Wiseco Engine Rebuild Kit 52.50 mm Kawasaki KX100 1995-2013 PWR173-100 – Comprehensive top- and bottom-end kit with high-quality crankshaft, rod assembly, main bearings, seals, gaskets, and hour meter bracket for Kawasaki KX100 models; ensures optimal performance and easy maintenance.
- VERTEX Engine Rebuild Kit - KTM XC/XC-W 250 | Husqvarna TE250 WR101-091 – All-in-one rebuild kit with Vertex piston, Hot Rods crankshaft, bearings/seals, transmission kit, and complete gaskets; perfect for professional top- and bottom-end refresh on KTM and Husqvarna 250cc models.
- ATHENA Piston Kit with Gaskets - 76.76 mm - CRF250R P5F0768245003B – High-performance 76.76 mm forged aluminum piston kit with rings, gaskets, and coatings for reduced friction; engineered for Honda CRF250R 4-stroke off-road with superior airflow and longevity.
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
-
Wrench Rabbit Complete Engine Rebuild Kit for 2000 Honda CR125R WR101-101
WRENCH RABBIT
$683.95Revitalize your Honda WR101-101 with the WRENCH RABBIT Engine Kit, designed for enthusiasts seeking a comprehensive rebuild solution. This all-in-one kit includes high-quality components that ensure optimal performance and durability, making your engine...09031076- SKU:
- 09031076
- Availability:
- Ships Same Business Day
- Weight:
- 10.45 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$683.95 -
Wrench Rabbit Engine Rebuild Kit for 2003-2004 Honda CR85R WR101-104
WRENCH RABBIT
$526.95Revitalize your Honda WR101-104 with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This comprehensive kit includes all essential components to restore your engine's performance and reliability, ensuring you get back on...09031078- SKU:
- 09031078
- Availability:
- Ships Same Business Day
- Weight:
- 8.40 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$526.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Kawasaki KX80 1991-1997 WR101-105
WRENCH RABBIT
$618.95Revitalize your Kawasaki WR101-105 with the WRENCH RABBIT Engine Kit, designed for a comprehensive and professional rebuild. This all-in-one kit includes high-quality components that ensure optimal performance and durability, making it the perfect choice...09031079- SKU:
- 09031079
- Availability:
- Ships Same Business Day
- Weight:
- 8.00 LBS
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$618.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2001-2004 Kawasaki KX100 WR101-106
WRENCH RABBIT
$711.95Revitalize your Kawasaki WR101-106 with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This all-in-one solution includes high-quality components to ensure your engine runs smoothly and efficiently, making it the perfect...09031080- SKU:
- 09031080
- Availability:
- Ships Same Business Day
- Weight:
- 8.15 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$711.95 -
Wrench Rabbit Complete Engine Rebuild Kit Kawasaki KX100 2005 WR101-107
WRENCH RABBIT
$711.95Revitalize your Kawasaki WR101-107 with the WRENCH RABBIT Engine Kit, designed to provide everything you need for a comprehensive and professional engine rebuild. This all-in-one kit combines high-quality components from trusted brands, ensuring...09031081- SKU:
- 09031081
- Availability:
- Ships Same Business Day
- Weight:
- 8.15 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
$711.95 -
Wrench Rabbit Engine Rebuild Kit Kawasaki KX100 1998-2000 WR101-108
WRENCH RABBIT
$683.95Revitalize your Kawasaki WR101-108 with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This comprehensive kit includes everything you need to restore your engine's performance and reliability, ensuring you get back on the...09031082- SKU:
- 09031082
- Availability:
- Ships Same Business Day
- Weight:
- 8.15 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
$683.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Kawasaki KX85 2001-2004 WR101-109
WRENCH RABBIT
$618.95Revitalize your Kawasaki WR101-109 with the comprehensive WRENCH RABBIT Engine Kit. This all-in-one solution includes everything you need for a professional-grade engine rebuild, ensuring optimal performance and longevity. With high-quality components...09031083- SKU:
- 09031083
- Availability:
- Ships Same Business Day
- Weight:
- 9.25 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$618.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Kawasaki KX85 2005 WR101-110
WRENCH RABBIT
$592.95Transform your Kawasaki WR101-110 with the WRENCH RABBIT Engine Kit, designed for a comprehensive and professional rebuild. This all-inclusive kit provides everything you need to restore your engine's performance and reliability, ensuring a smooth and...09031084- SKU:
- 09031084
- Availability:
- Ships Same Business Day
- Weight:
- 8.10 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$592.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Kawasaki KX250 1997 WR101-112
WRENCH RABBIT
$867.95Revitalize your Kawasaki WR101-112 with the WRENCH RABBIT Engine Kit, designed for both enthusiasts and professionals. This all-in-one kit includes everything you need for a thorough engine rebuild, ensuring optimal performance and reliability. With...09031086- SKU:
- 09031086
- Availability:
- Ships Same Business Day
- Weight:
- 14.25 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$867.95 -
Wrench Rabbit Engine Rebuild Kit Kawasaki KX250 1998-2001 WR101-113
WRENCH RABBIT
$867.95Revitalize your Kawasaki with the WRENCH RABBIT Engine Kit, designed for a seamless and efficient rebuild. This all-in-one kit includes high-quality components to ensure your engine performs at its best, providing durability and reliability for your...09031087- SKU:
- 09031087
- Availability:
- Ships Same Business Day
- Weight:
- 14.20 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$867.95 -
Wrench Rabbit Engine Rebuild Kit for 1993-2001 Yamaha YZ80 WR101-124
WRENCH RABBIT
$592.95Revitalize your Yamaha WR101-124 with the WRENCH RABBIT Engine Kit, designed for a comprehensive and professional rebuild. This all-in-one kit includes high-quality components that ensure optimal performance and durability, making it the perfect choice...09031098- SKU:
- 09031098
- Availability:
- Ships Same Business Day
- Weight:
- 8.00 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
$592.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Yamaha YZ125 1998-2000 WR101-093
WRENCH RABBIT
$737.95Revitalize your Yamaha WR101-125 with the WRENCH RABBIT Engine Kit, a comprehensive solution designed for a complete and professional engine rebuild. This all-in-one kit includes high-quality components to ensure optimal performance and reliability,...09031099- SKU:
- 09031099
- Availability:
- Ships Same Business Day
- Weight:
- 11.45 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
$737.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Yamaha YZ250 1999-2000 WR101-126
WRENCH RABBIT
$867.95Revitalize your Yamaha WR101-126 with the all-inclusive WRENCH RABBIT Engine Kit. This comprehensive package provides everything you need for a professional-grade engine rebuild, ensuring optimal performance and reliability. From high-quality components...09031100- SKU:
- 09031100
- Availability:
- Ships Same Business Day
- Weight:
- 14.20 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- FEATURES:
- STANDARD COMPRESSION PISTON
$867.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2001 Yamaha YZ250 WR101-127
WRENCH RABBIT
$895.95Revitalize your Yamaha WR101-127 with the comprehensive WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This all-in-one solution provides nearly every component necessary to restore your engine to peak performance, ensuring...09031101- SKU:
- 09031101
- Availability:
- Ships Same Business Day
- Weight:
- 15.45 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- ENGINE
$895.95 -
Wrench Rabbit Complete Engine Rebuild Kit for KTM 200 EXC 2003-2005 WR101-129
WRENCH RABBIT
$972.95Revitalize your KTM WR101-129 with the WRENCH RABBIT Engine Kit, your all-in-one solution for a professional-grade engine rebuild. This comprehensive kit includes high-quality components designed for durability and performance, ensuring your bike runs...09031103- SKU:
- 09031103
- Availability:
- Ships Same Business Day
- Weight:
- 11.60 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
$972.95Qty in Cart: 0Quantity:Price:$972.95Subtotal: -
Wrench Rabbit Engine Rebuild Kit for 1990-1991 Honda CR125R WR101-130
WRENCH RABBIT
$711.95Revitalize your Honda WR101-130 with the comprehensive WRENCH RABBIT Engine Kit, designed for enthusiasts seeking a complete and professional rebuild. This all-in-one solution includes high-quality components that ensure optimal performance and...09031104- SKU:
- 09031104
- Availability:
- Ships Same Business Day
- Weight:
- 11.40 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$711.95 -
Wrench Rabbit Engine Rebuild Kit for 1992-1995 Honda CR125R WR101-131
WRENCH RABBIT
$711.95Revitalize your Honda engine with the WRENCH RABBIT Engine Kit, a comprehensive solution designed for a seamless rebuild. This all-in-one kit includes everything you need to restore your engine to peak performance, ensuring reliability and longevity on...09031105- SKU:
- 09031105
- Availability:
- Ships Same Business Day
- Weight:
- 10.32 LBS
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
$711.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 1996-1997 Honda CR125R WR101-132
WRENCH RABBIT
$711.95Revitalize your Honda engine with the WRENCH RABBIT Engine Kit, designed to provide everything you need for a seamless and professional rebuild. This comprehensive kit combines high-quality components to ensure optimal performance and durability, making...09031106- SKU:
- 09031106
- Availability:
- Ships Same Business Day
- Weight:
- 10.40 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$711.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Honda CRF250X 2007-2016 WR101-139
WRENCH RABBIT
$946.95Revitalize your Honda WR101-139 with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This all-in-one kit includes everything you need to restore your engine's performance and reliability, ensuring a smooth ride every time...09031109- SKU:
- 09031109
- Availability:
- Ships Same Business Day
- Weight:
- 12.85 LBS
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$946.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Honda CRF250X 2004-2006 WR101-140
WRENCH RABBIT
$946.95Revitalize your Honda WR101-140 with the WRENCH RABBIT Engine Kit, a comprehensive solution designed for a seamless and professional rebuild. This all-in-one kit includes high-quality components that ensure optimal performance and longevity, making it...09031110- SKU:
- 09031110
- Availability:
- Ships Same Business Day
- Weight:
- 12.80 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
$946.95
