Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Wiseco Engine Kit Kawasaki KX100 2006 PWR164-100
WISECO
$479.95Revitalize your KX100 with the WISECO Engine Kit, meticulously engineered for a complete top and bottom-end rebuild. This comprehensive kit ensures optimal performance and longevity, featuring a crankshaft and rod assembly that meets rigorous durability...09031542- SKU:
- 09031542
- Availability:
- Ships Same Business Day
- Weight:
- 7.55 LBS
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE METRIC:
- 52.50 MM
- DISPLACEMENT:
- 100 CC
- ENGINE TYPE:
- 2-STROKE
- TYPE:
- ENGINE
- FEATURES:
- PROLITE® PISTON
- OVERBORE METRIC:
- STANDARD
- MODEL:
- GARAGE BUDDY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$479.95 -
Wiseco Engine Rebuild Kit for 2010-2013 Honda CRF250R PWR168-100
WISECO
$864.95Revitalize your CRF250 with the WISECO Engine Kit, meticulously designed for a complete top and bottom-end rebuild. Each component, from the crankshaft to the seals, is rigorously inspected to ensure maximum performance and durability, making it the...09031546- SKU:
- 09031546
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
$864.95 -
Wiseco Engine Rebuild Kit for 2005-2007 Honda CR250R PWR172-100
WISECO
$694.95Revitalize your CRF250R with the WISECO Engine Kit, meticulously crafted for a complete engine rebuild. This comprehensive kit combines top-quality components to ensure optimal performance and longevity, making it the perfect choice for both enthusiasts...09031548- SKU:
- 09031548
- Availability:
- Ships Same Business Day
- Weight:
- 13.15 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- DISPLACEMENT:
- 250 CC
- ENGINE TYPE:
- 2-STROKE
- BORE SIZE METRIC:
- 66.40 MM
- FEATURES:
- GP SERIES PISTON
- OVERBORE METRIC:
- STANDARD
- MODEL:
- GARAGE BUDDY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$694.95 -
Wiseco Steel Exhaust Valve for Honda CRF70F 2004-2012 VES022
WISECO
$24.99The WISECO Exhaust Valve VES022 is engineered for high-performance applications, offering exceptional durability and efficiency. With advanced treatments such as CVD or CNI, this valve minimizes wear and friction while effectively resisting heat...09262233- SKU:
- 09262233
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- VALVE
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$24.99 -
Wiseco Steel Exhaust Valve Honda CRF250R 2008-2009 VES023
WISECO
$44.95The WISECO Exhaust Valve VES023 is engineered for high-performance applications, offering exceptional durability and efficiency. Treated with advanced CVD or CNI technologies, this valve minimizes wear and friction while effectively resisting heat...09262234- SKU:
- 09262234
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
$44.95 -
Wiseco Honda XR250R 1996-2004 Exhaust Valve VES024
WISECO
$29.95The WISECO Exhaust Valve VES024 is engineered for optimal performance and durability in high-temperature environments. Utilizing advanced CVD or CNI treatments, this valve significantly reduces wear and friction while effectively resisting heat...09262235- SKU:
- 09262235
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
$29.95 -
Wiseco Exhaust Valve Yamaha YZ400F 1998-1999 VES006
WISECO
$34.95The WISECO Exhaust Valve VES006 is engineered for optimal performance in high-stress environments. Utilizing advanced CVD or CNI treatments, this valve significantly enhances durability and reduces friction, ensuring efficient heat management during...09260261- SKU:
- 09260261
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$34.95 -
Wiseco Exhaust Valve for Suzuki DR-Z400S 2000-2024 VES009
WISECO
$44.95The WISECO Exhaust Valve VES009 is engineered for optimal performance, utilizing advanced treatment technologies like CVD and CNI to enhance durability and efficiency. These coatings significantly reduce wear and friction while providing excellent...09260262- SKU:
- 09260262
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
$44.95 -
Wiseco Intake Valve Honda TRX400X 2012-2014 VIS003
WISECO
$29.95The WISECO Intake Valve VIS003 is engineered for high-performance applications, utilizing advanced CVD or CNI treatments tailored to specific needs. These innovative coatings significantly reduce wear and friction, ensuring optimal engine efficiency...09260272- SKU:
- 09260272
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
$29.95 -
Wiseco Intake Valve for Yamaha YZ400F 1998-1999 VIS006
WISECO
$24.99The WISECO Intake Valve VIS006 is engineered for high-performance applications, utilizing advanced CVD or CNI treatments tailored to specific needs. These innovative coatings enhance durability by significantly reducing wear and friction while...09260274- SKU:
- 09260274
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
$24.99 -
Wiseco Intake Valve Yamaha WR 400 F 1998-2000 VIS006C
WISECO
$24.99The WISECO Intake Valve VIS006C is engineered for high-performance applications, utilizing advanced CVD or CNI treatments tailored to specific needs. These innovative coatings significantly reduce wear and friction, ensuring optimal durability and heat...09260275- SKU:
- 09260275
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- CENTER INTAKE
$24.99 -
Wiseco Intake Valve for Kawasaki KFX400 2003-2005 and Suzuki DR-Z400S 2000-2020 VIS009
WISECO
$34.95The WISECO Intake Valve VIS009 is engineered for optimal performance and durability in high-demand applications. Utilizing advanced CVD or CNI treatments, this valve significantly reduces wear and friction while effectively resisting heat penetration,...09260276- SKU:
- 09260276
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$34.95 -
Wiseco Ring Set 62.5mm Gas Gas EC 200 2000-2014 2461CD
WISECO
$49.95Enhance your engine's performance with the WISECO Ring Set 2461CD, designed specifically for optimal fit and durability. Each set includes rings tailored for a single piston, ensuring precise sealing and improved combustion efficiency. Upgrade your...2461CD- SKU:
- 2461CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- DISPLACEMENT:
- 172 CC
- RIDING STYLE:
- SNOW
- BORE SIZE METRIC:
- 62.50 MM
- UNITS:
- SET
- DISPLACEMENT:
- 199 CC
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
$49.95 -
Wiseco 2-Stroke Piston Ring Set 68.25mm 1986-1989 Honda TRX250R 2687CD
WISECO
$49.95The WISECO Ring Set 2687CD is expertly crafted to enhance engine performance and longevity. Designed specifically for one piston, this ring set ensures optimal sealing and reduced friction, making it an essential upgrade for any high-performance engine...2687CD- SKU:
- 2687CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- BORE SIZE METRIC:
- 68.25 MM
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- PISTON MATERIAL:
- ALUMINUM
- DISPLACEMENT:
- 436 CC
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$49.95 -
Wiseco Ring Set 68.50mm Honda TRX250R 1986-1989 2697CD
WISECO
$49.95The WISECO Ring Set 2697CD is engineered for optimal performance and durability, designed specifically for high-performance pistons. With precision manufacturing, these rings ensure a perfect seal and enhanced engine efficiency, making them an essential...2697CD- SKU:
- 2697CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 436 CC
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 68.50 MM
- RIDING STYLE:
- SNOW
- UNITS:
- SET
$49.95 -
Wiseco 2-Stroke Piston Ring Set 67mm Bore Honda CR250R 1984-2001 2638CD
WISECO
$49.95The WISECO Ring Set 2638CD is engineered for optimal performance and durability, designed specifically for a single piston. This high-quality ring set ensures a perfect fit and enhanced engine efficiency, making it an essential upgrade for any serious...2638CD- SKU:
- 2638CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- WATERCRAFT
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- BORE SIZE METRIC:
- 67.00 MM
- DISPLACEMENT:
- 195 CC
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 171 CC
- UNITS:
- SET
$49.95 -
Wiseco 2-Stroke Piston Ring Set 49mm Honda CR80R 1986-2002 Kawasaki KX85 2014-2023 Suzuki RM80 1986-2001 Yamaha YZ80 1984-2001 1929CS
WISECO
$24.95The WISECO Ring Set 1929CS is expertly engineered for high-performance applications, ensuring optimal piston sealing and engine efficiency. Designed for durability and precision, this ring set enhances your engine's performance while providing reliable...1929CS- SKU:
- 1929CS
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- UNITS:
- SET
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- BORE SIZE METRIC:
- 49.00 MM
- DISPLACEMENT:
- 82,9 CC
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
$24.95 -
Wiseco YZ85 2002-2024 Ring Set 49.50mm 1949CS
WISECO
$24.95The WISECO Ring Set 1949CS is engineered for optimal performance and durability, ensuring your piston operates at peak efficiency. Designed specifically for a single piston, this ring set provides a perfect fit and reliable sealing, enhancing engine...1949CS- SKU:
- 1949CS
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- DISPLACEMENT:
- 84,7 CC
- UNITS:
- SET
- BORE SIZE METRIC:
- 49.50 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PISTON RING
$24.95 -
Wiseco Ring Set 50mm Kawasaki KE100 1976-2000 1969CD
WISECO
$49.95The WISECO Ring Set 1969CD is engineered for optimal performance and durability, ensuring your engine runs smoothly and efficiently. Designed for a perfect fit with your piston, this ring set enhances compression and reduces oil consumption, making it an...1969CD- SKU:
- 1969CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 50.00 MM
- DISPLACEMENT:
- 79,7 CC
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- SET
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
- PISTON MATERIAL:
- ALUMINUM
$49.95 -
Wiseco Suzuki RM125 2004-2008 GP Series Piston Kit PK1412
WISECO
$284.95Engineered for performance and durability, the WISECO Piston Kit with Gaskets PK1412 is perfect for those looking to enhance their engine's capabilities. Crafted from a high-silicon aluminum alloy, this kit ensures maximum strength and reliability during...09030687- SKU:
- 09030687
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 54.50 MM
- BORE - OVERSIZE:
- +4,00 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 58.00 MM
- MODEL:
- RACER'S CHOICE
- PISTON MATERIAL:
- FORGED
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +4.00 MM
- COOLING SYSTEM:
- AIR COOLED
- DISPLACEMENT:
- 125 CC
$284.95Qty in Cart: 0Quantity:Price:$284.95Subtotal:
