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
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Wrench Rabbit Complete Engine Rebuild Kit for 1994-1996 Kawasaki KX250 WR101-117
WRENCH RABBIT
$867.95Revitalize your Kawasaki WR101-117 with the WRENCH RABBIT Engine Kit, a comprehensive solution designed for both amateur and professional mechanics. This all-in-one kit includes high-quality components to ensure a seamless and efficient engine rebuild,...09031091- SKU:
- 09031091
- Availability:
- Ships Same Business Day
- Weight:
- 14.25 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$867.95 -
Wrench Rabbit Engine Rebuild Kit KTM 144 SX 2007-2008 WR101-119
WRENCH RABBIT
$985.95Revitalize your KTM WR101-119 with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This comprehensive kit includes all essential components, ensuring you have everything needed for optimal performance and reliability. ...09031093- SKU:
- 09031093
- Availability:
- Ships Same Business Day
- Weight:
- 11.30 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- UNITS:
- KIT
$985.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Kawasaki KX85 2006 WR101-133
WRENCH RABBIT
$618.95Revitalize your Kawasaki WR with the WRENCH RABBIT Engine Kit, designed to provide all the essential components for a thorough and professional engine rebuild. This comprehensive kit ensures you have everything you need for a seamless installation,...09031107- SKU:
- 09031107
- Availability:
- Ships Same Business Day
- Weight:
- 9.25 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
$618.95 -
Wrench Rabbit Engine Rebuild Kit for KTM 250 SX-F 2011 WR101-143
WRENCH RABBIT
$1,249.95Revitalize your KTM WR101-143 with the WRENCH RABBIT Engine Kit, designed for seamless, professional-grade rebuilds. This comprehensive kit includes everything you need to restore your engine's performance, ensuring durability and reliability with...09031113- SKU:
- 09031113
- Availability:
- Ships Same Business Day
- Weight:
- 12.45 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$1,249.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2013-2017 KTM 85 SX WR101-148
WRENCH RABBIT
$867.95Revitalize your KTM WR with the WRENCH RABBIT Engine Kit, designed for enthusiasts seeking a complete and professional rebuild. This all-inclusive kit provides everything you need for a seamless installation, ensuring your engine performs at its peak...09031117- SKU:
- 09031117
- Availability:
- Ships Same Business Day
- Weight:
- 8.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$867.95Qty in Cart: 0Quantity:Price:$867.95Subtotal: -
Wrench Rabbit Engine Rebuild Kit Honda CRF450R 2002-2003 WR101-152
WRENCH RABBIT
$985.95Revitalize your Honda WR101-152 with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This comprehensive kit includes all essential components, ensuring your engine performs at its best. Experience reliability and...09031121- SKU:
- 09031121
- Availability:
- Ships Same Business Day
- Weight:
- 16.25 LBS
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
$985.95 -
Wrench Rabbit Engine Rebuild Kit for 2014-2015 Honda CRF250R WR101-153
WRENCH RABBIT
$1,052.95Revitalize your Honda WR101-153 with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild experience. This all-inclusive kit offers everything you need to restore your engine to peak performance, ensuring reliability and...09031122- SKU:
- 09031122
- Availability:
- Ships Same Business Day
- Weight:
- 12.90 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$1,052.95 -
Wrench Rabbit Engine Rebuild Kit KTM 200 XC-W 2013-2014 WR101-154
WRENCH RABBIT
$985.95Revitalize your KTM WR101-154 with the WRENCH RABBIT Engine Kit, designed for enthusiasts seeking a comprehensive and professional rebuild solution. This all-in-one kit includes high-quality components to ensure your engine performs at its best, making...09031123- SKU:
- 09031123
- Availability:
- Ships Same Business Day
- Weight:
- 11.45 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$985.95 -
Wiseco Engine Rebuild Kit for Suzuki RM250 2003-2004 PWR165A-100
WISECO
$664.95Revitalize your RM250 with the WISECO Engine Kit, engineered for optimal performance and longevity. This comprehensive kit includes everything you need for a complete engine rebuild, ensuring your bike runs smoothly and efficiently. Each component is...09031544- SKU:
- 09031544
- Availability:
- Ships Same Business Day
- Weight:
- 13.65 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- DISPLACEMENT:
- 250 CC
- ENGINE TYPE:
- 2-STROKE
- BORE SIZE METRIC:
- 66.40 MM
- OVERBORE METRIC:
- STANDARD
- UNITS:
- KIT
- FEATURES:
- PROLITE® PISTON
- MODEL:
- GARAGE BUDDY
- RIDING STYLE:
- OFF-ROAD
$664.95 -
Wrench Rabbit Engine Rebuild Kit for Suzuki RMZ450 2008-2012 WR101-076
WRENCH RABBIT
$1,288.95Revitalize your Suzuki 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 for your engine. ...09031011- SKU:
- 09031011
- Availability:
- Ships Same Business Day
- Weight:
- 15.95 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$1,288.95 -
Wrench Rabbit Yamaha YZ125 2005-2016 Complete Engine Rebuild Kit WR101-081
WRENCH RABBIT
$737.95Revitalize your Yamaha WR 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 durability, making it the...09031016- SKU:
- 09031016
- Availability:
- Ships Same Business Day
- Weight:
- 10.30 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
$737.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Kawasaki KX80 1998-2000 WR101-011
WRENCH RABBIT
$592.95Revitalize your Kawasaki with the WRENCH RABBIT Engine Kit, designed for a comprehensive and professional rebuild. This all-in-one solution includes high-quality components to ensure optimal performance and reliability, making it the perfect choice for...09031058- SKU:
- 09031058
- Availability:
- Ships Same Business Day
- Weight:
- 8.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
$592.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2007-2015 KTM 125 SX WR101-216
WRENCH RABBIT
$985.95Revitalize your KTM with the WRENCH RABBIT Engine Kit, designed for a seamless and professional engine rebuild. This comprehensive kit includes everything you need for optimal performance and reliability, ensuring your bike runs like new. Complete...09031060- SKU:
- 09031060
- Availability:
- Ships Same Business Day
- Weight:
- 11.00 LBS
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$985.95 -
Wrench Rabbit Engine Rebuild Kit for KTM 250 SX 2007-2015 WR101-067
WRENCH RABBIT
$985.95Revitalize your KTM with the WRENCH RABBIT Engine Kit, the ultimate solution for a complete and professional rebuild. This all-in-one package includes everything you need to restore your engine to peak performance, ensuring reliability and durability on...09031063- SKU:
- 09031063
- Availability:
- Ships Same Business Day
- Weight:
- 13.95 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
$985.95 -
Wrench Rabbit Engine Rebuild Kit for KTM 200 EXC 2003 WR101-090
WRENCH RABBIT
$985.95Revitalize your KTM with the WRENCH RABBIT Engine Kit, a comprehensive solution for a complete and professional engine rebuild. This all-in-one kit includes high-quality components designed to restore your engine's performance and reliability, ensuring...09031065- SKU:
- 09031065
- Availability:
- Ships Same Business Day
- Weight:
- 15.23 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$985.95 -
Wrench Rabbit Complete Engine Rebuild Kit Kawasaki KX250 2002-2003 WR101-114
WRENCH RABBIT
$867.95Revitalize your Kawasaki with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This comprehensive kit includes all essential components, ensuring your engine performs at its best with reliability and power. Vertex...09031088- SKU:
- 09031088
- Availability:
- Ships Same Business Day
- Weight:
- 14.35 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
$867.95 -
Wiseco Engine Rebuild Kit for 2009-2020 KTM 65 SX PWR161B-100
WISECO
$469.95Revitalize your engine with the WISECO Engine Kit 65SX PWR161B-100, expertly crafted to provide everything you need for a complete rebuild. This comprehensive kit ensures optimal performance and longevity, featuring high-quality components designed for...09031539- SKU:
- 09031539
- Availability:
- Ships Same Business Day
- Weight:
- 7.05 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- OVERBORE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 45.00 MM
- DISPLACEMENT:
- 65 CC
- FEATURES:
- PROLITE® PISTON
- MODEL:
- GARAGE BUDDY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$469.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 1992-2002 Honda CR80R WR101-010
WRENCH RABBIT
$526.95Revitalize your Honda engine with the WRENCH RABBIT Engine Kit, an all-in-one solution designed for a seamless and professional rebuild. This comprehensive kit includes high-quality components that ensure optimal performance and durability, making it...09031057- SKU:
- 09031057
- Availability:
- Ships Same Business Day
- Weight:
- 8.40 LBS
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
$526.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2007-2009 Honda CRF150R WR101-177
WRENCH RABBIT
$867.95Revitalize your Honda engine with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild experience. This all-in-one solution includes high-quality components to ensure optimal performance and longevity, making it the ideal choice...09031305- SKU:
- 09031305
- Availability:
- Ships Same Business Day
- Weight:
- 10.80 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$867.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Honda CRF150R 2012-2016 WR101-178
WRENCH RABBIT
$867.95Revitalize your Honda with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This comprehensive kit includes all essential components, ensuring your engine operates at peak performance. With high-quality parts from trusted...09031306- SKU:
- 09031306
- Availability:
- Ships Same Business Day
- Weight:
- 9.15 LBS
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$867.95
