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
-
Wiseco Engine Rebuild Kit Yamaha YZ450F 2006-2009 PWR151-100
WISECO
$994.95WISECO Engine Kit for YZ450F (2006-2009) Revitalize your YZ450F with the WISECO Engine Kit, offering everything you need for a complete engine rebuild. Designed for durability and performance, this comprehensive kit ensures your bike runs smoothly and...09031535- SKU:
- 09031535
- Availability:
- Ships Same Business Day
- Weight:
- 14.00 LBS
$994.95Qty in Cart: 0Quantity:Price:$994.95Subtotal: -
Wiseco Engine Rebuild Kit KTM 125 SX 2007-2015 PWR153-102
WISECO
$664.95WISECO Complete Engine Rebuild Kit for KTM/TC125 (2007-2015) Revitalize your KTM/TC125 with the WISECO Engine Kit, meticulously crafted for a seamless rebuild experience. This comprehensive kit includes all essential components for both top and...09031536- SKU:
- 09031536
- Availability:
- Ships Same Business Day
- Weight:
- 10.65 LBS
- DISPLACEMENT:
- 125 CC
- FEATURES:
- PROLITE® PISTON
- TYPE:
- ENGINE
- BORE SIZE METRIC:
- 54.00 MM
- OVERBORE METRIC:
- STANDARD
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- GARAGE BUDDY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$664.95 -
Wiseco Engine Rebuild Kit Honda CRF250R 2008-2009 PWR159-100
WISECO
$879.95WISECO Engine Kit for CRF250 (2008-2009) PWR159-100 Elevate your bike's performance with the WISECO Engine Kit, designed specifically for the CRF250 models from 2008 to 2009. This comprehensive kit includes everything you need for a complete engine...09031537- SKU:
- 09031537
- Availability:
- Ships Same Business Day
- Weight:
- 11.25 LBS
$879.95 -
Wiseco Engine Rebuild Kit for KTM 125 SX 2016-2017 PWR213-100
WISECO
$884.95WISECO Engine Rebuild Kit PWR213-100 Revitalize your engine with the WISECO Engine Rebuild Kit PWR213-100, designed for both 4-stroke and 2-stroke applications. This comprehensive kit ensures optimal performance and longevity, featuring high-quality...09031672- SKU:
- 09031672
- Availability:
- Ships Same Business Day
- Weight:
- 8.75 LBS
- BORE SIZE METRIC:
- 54.00 MM
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$884.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2004-2005 KTM 300 EXC WR00002
WRENCH RABBIT
$974.95WRENCH RABBIT Engine Kit KTM WR00002 Revitalize your KTM engine with the WRENCH RABBIT Engine Kit WR00002, designed for a comprehensive rebuild. This all-inclusive kit ensures optimal performance and durability, featuring high-quality components tailored...09031629- SKU:
- 09031629
- Availability:
- Ships Same Business Day
- Weight:
- 15.35 LBS
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$974.95Qty in Cart: 0Quantity:Price:$974.95Subtotal: -
Wrench Rabbit Complete Engine Rebuild Kit for 2006-2008 KTM 50 SX WR00003
WRENCH RABBIT
$548.95WRENCH RABBIT Engine Kit WR00003 Revitalize your engine with the WRENCH RABBIT Engine Kit WR00003. This comprehensive rebuild kit is designed to restore performance and reliability, ensuring your engine runs smoothly for miles to come. With all essential...09031630- SKU:
- 09031630
- Availability:
- Ships Same Business Day
- Weight:
- 5.70 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$548.95 -
WRENCH RABBIT Engine Kit - Kawasaki WR00004
WRENCH RABBIT
$938.95WRENCH RABBIT Engine Kit Kawasaki WR00004Complete engine rebuild kit, Includes crankshaft, piston kit, complete engine gasket kit with oil seals, main bearings and seals, water pump rebuild kit, transmission bearings, countershaft bushing/seal kit, wrist...09031631- SKU:
- 09031631
- Availability:
- Ships Same Business Day
- Weight:
- 15.65 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$938.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Kawasaki KX60 1985-2003 WR00005
WRENCH RABBIT
$522.95WRENCH RABBIT Engine Kit Kawasaki WR00005 Revitalize your Kawasaki engine with the WRENCH RABBIT Engine Kit, designed for a comprehensive rebuild that ensures optimal performance and longevity. This all-inclusive kit features high-quality components...09031632- SKU:
- 09031632
- Availability:
- Ships Same Business Day
- Weight:
- 7.50 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$522.95 -
Wrench Rabbit Complete Engine Rebuild Kit for Yamaha YZ250F 2016-2018 WR00008
WRENCH RABBIT
$1,048.95WRENCH RABBIT Engine Kit WR00008 Revitalize your engine with the WRENCH RABBIT Engine Kit WR00008, designed for a comprehensive rebuild that ensures peak performance and longevity. This all-inclusive kit provides everything you need for a seamless engine...09031634- SKU:
- 09031634
- Availability:
- Ships Same Business Day
- Weight:
- 12.30 LBS
- RIDING STYLE:
- UTV
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$1,048.95 -
Wrench Rabbit Engine Rebuild Kit for 2014-2015 KTM 250 SX-F WR101-161
WRENCH RABBIT
$1,218.95WRENCH RABBIT Engine Kit KTM WR101-161 Revitalize your KTM WR101-161 with the WRENCH RABBIT Engine Kit, designed for those seeking a comprehensive and professional rebuild. This all-in-one solution provides everything you need to restore your engine's...09031262- SKU:
- 09031262
- Availability:
- Ships Same Business Day
- Weight:
- 12.75 LBS
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$1,218.95 -
Wrench Rabbit Engine Rebuild Kit for Kawasaki KX100 2014-2016 WR101-163
WRENCH RABBIT
$658.95WRENCH RABBIT Engine Kit for Kawasaki WR101-163 Revitalize 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 runs smoothly and...09031264- SKU:
- 09031264
- Availability:
- Ships Same Business Day
- Weight:
- 8.10 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
$658.95 -
Wrench Rabbit Engine Rebuild Kit for KTM 200 EXC 2000-2002 WR101-180
WRENCH RABBIT
$938.95WRENCH RABBIT Engine Rebuild Kit WR101-180 Revitalize your engine with the WRENCH RABBIT Engine Rebuild Kit WR101-180, your all-in-one solution for a professional-grade rebuild. This comprehensive kit includes top-quality components designed to restore...09031436- SKU:
- 09031436
- Availability:
- Ships Same Business Day
- Weight:
- 11.70 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$938.95 -
Wrench Rabbit Engine Rebuild Kit 2014-2016 Yamaha YZ450F WR101-181
WRENCH RABBIT
$1,156.95WRENCH RABBIT Engine Rebuild Kit WR101-181 Revitalize your engine with the WRENCH RABBIT Engine Rebuild Kit WR101-181, your all-in-one solution for a professional-grade rebuild. This comprehensive kit includes high-quality components designed to restore...09031437- SKU:
- 09031437
- Availability:
- Ships Same Business Day
- Weight:
- 16.25 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$1,156.95 -
Wrench Rabbit Engine Rebuild Kit 2004-2007 Yamaha YFZ450 WR101-186
WRENCH RABBIT
$974.95WRENCH RABBIT Engine Rebuild Kit WR101-186 Revitalize your engine with the WRENCH RABBIT Engine Rebuild Kit WR101-186, designed for those who demand quality and performance. This comprehensive kit includes all the essential components for a complete...09031438- SKU:
- 09031438
- Availability:
- Ships Same Business Day
- Weight:
- 10.70 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$974.95 -
Wrench Rabbit Engine Rebuild Kit for Suzuki RM125 2004-2007 WR101-187
WRENCH RABBIT
$938.95WRENCH RABBIT Engine Rebuild Kit WR101-187 Revitalize your engine with the WRENCH RABBIT Engine Rebuild Kit WR101-187, the comprehensive solution for a professional-grade rebuild. This all-in-one kit provides everything you need for a thorough...09031439- SKU:
- 09031439
- Availability:
- Ships Same Business Day
- Weight:
- 10.85 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
$938.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 2016-2017 Honda CRF250R WR101-219
WRENCH RABBIT
$1,011.95WRENCH RABBIT Engine Kit for Honda WR101-219 Transform your Honda's performance with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This comprehensive kit includes all essential components to ensure your engine runs like...09031549- SKU:
- 09031549
- Availability:
- Ships Same Business Day
- Weight:
- 13.20 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- UNITS:
- KIT
$1,011.95Qty in Cart: 0Quantity:Price:$1,011.95Subtotal: -
Wrench Rabbit Complete Engine Rebuild Kit for 1995-1996 Honda CR250R WR101-013
WRENCH RABBIT
$767.95WRENCH RABBIT Engine Kit Honda WR101-013 Revitalize your Honda engine 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, ensuring...09030953- SKU:
- 09030953
- Availability:
- Ships Same Business Day
- Weight:
- 14.65 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- REBUILD KIT
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- FEATURES:
- STANDARD COMPRESSION PISTON
- UNITS:
- KIT
$767.95 -
Wrench Rabbit Engine Rebuild Kit for 1997-2001 Honda CR250R WR101-014
WRENCH RABBIT
$803.95WRENCH RABBIT Engine Kit for Honda WR101-014 Revitalize your Honda engine with the WRENCH RABBIT Engine Kit, designed for a seamless and professional rebuild. This comprehensive kit includes all essential components, ensuring you have everything you need...09030954- SKU:
- 09030954
- Availability:
- Ships Same Business Day
- Weight:
- 14.65 LBS
- MODEL:
- WRENCH RABBIT
- UNITS:
- KIT
- TYPE:
- ENGINE
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
$803.95 -
WRENCH RABBIT Engine Kit - Honda WR101-016
WRENCH RABBIT
$803.95WRENCH RABBIT Engine Kit Honda WR101-016Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuild, Vertex piston kit (standard compression piston, rings, pin and clips), Hot Rods heavy-duty crank (stock...09030956- SKU:
- 09030956
- Availability:
- Ships Same Business Day
- Weight:
- 13.64 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 2-STROKE
- FEATURES:
- STANDARD COMPRESSION PISTON
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
$803.95 -
Wrench Rabbit Complete Engine Rebuild Kit for 1989-2001 Honda CR500R WR101-017
WRENCH RABBIT
$852.95WRENCH RABBIT Engine Kit for Honda WR101-017 Revitalize your Honda engine with the WRENCH RABBIT Engine Kit, a comprehensive solution designed for a professional-grade rebuild. This all-in-one kit includes high-quality components that ensure durability...09030957- SKU:
- 09030957
- Availability:
- Ships Same Business Day
- Weight:
- 18.70 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
$852.95
