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 Piston Kit Yamaha YZ 250 1988-1991 605M06800
WISECO
$199.95Transform your Yamaha's performance with the Wiseco Piston Kit. Engineered for riders who demand excellence, this kit offers superior durability and power, ensuring you maximize your bike's potential on every ride. High-Performance Alloy: Crafted from...605M06800- SKU:
- 605M06800
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH:
- 68,00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 246,8 CC
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- STROKE LENGTH METRIC:
- 68.00 MM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 68.00 MM
$199.95 -
Wiseco Piston Kit 68.50mm for 2002-2004 Honda CR250R 801M06850
WISECO
$224.95Transform your Honda CR250R into a powerhouse with the Wiseco Piston Kit. Crafted for riders who demand peak performance, this kit enhances engine efficiency and responsiveness, ensuring every ride is exhilarating. Experience the thrill of improved...09100201- SKU:
- 09100201
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE - OVERSIZE:
- +2,10 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 72.00 MM
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +2.10 MM
- DISPLACEMENT:
- 265 CC
- PISTON MATERIAL:
- FORGED
- BORE SIZE METRIC:
- 68.50 MM
$224.95 -
Wiseco Piston Kit 39mm 11:1 Compression Honda CRF50F 2004-2013 4798M03900
WISECO
$119.95Unleash the full potential of your Honda with the Wiseco Piston Kit, meticulously engineered for riders who seek top-tier performance and reliability. This premium piston kit is designed to enhance your bike's power delivery, making it an essential...09100202- SKU:
- 09100202
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.1:1
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 39.00 MM
- BORE - OVERSIZE:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 49.5 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 41.40 MM
$119.95 -
Wiseco Piston Kit 68.50mm 2.10mm Oversize Yamaha YZ250 1999-2020 804M06850
WISECO
$224.95Transform your Yamaha's performance with the Wiseco Pro-Lite Piston Kit, engineered for those who demand excellence on the track and trails. This kit promises to elevate your riding experience with unmatched power and reliability, making it an essential...09100207- SKU:
- 09100207
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE SIZE METRIC:
- 68.50 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- BORE - OVERSIZE:
- +2,10 MM
- BORE - OVERSIZE METRIC:
- +2.10 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 265 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
$224.95 -
Wiseco Piston Kit with Gasket for Suzuki RM-Z250 2010-2018 PK1878
WISECO
$324.95Elevate your riding experience with the Wiseco Performance Piston Kit, meticulously crafted for the Suzuki RMZ250. This kit combines cutting-edge engineering with high-quality materials to enhance your bike's power, efficiency, and longevity, making it...09031167- SKU:
- 09031167
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 77.00 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- STROKE LENGTH METRIC:
- 53.60 MM
- DISPLACEMENT:
- 250 CC
- SKIRT COATING:
- ARMORGLIDE®
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- BORE - OVERSIZE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.9:1
- PISTON DIAMETER METRIC:
- 76.96 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$324.95 -
Wiseco Cam Chain Husqvarna FE 350S 2015-2016 CC033
WISECO
$104.95Engineered for performance and longevity, the WISECO Cam Chain CC033 is crafted from high-quality materials that minimize friction and enhance durability. This "M" style chain is designed to deliver exceptional strength, ensuring your engine operates at...09250651- SKU:
- 09250651
- Availability:
- Ships Same Business Day
- Weight:
- 0.59 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM
- PRODUCT NAME:
- CHAIN
- CHAIN SIZE:
- 98XRH2015
- NUMBER OF LINKS:
- 112
$104.95Qty in Cart: 0Quantity:Price:$104.95Subtotal: -
Wiseco Top End Bearing 19x24x24.8 for Kawasaki KX500 1988-2004 B1036
WISECO
$23.99Engineered for peak performance, the WISECO Top End Bearing combines advanced materials with precision manufacturing to ensure reliability and efficiency. Its high-silicon aluminum alloy construction provides exceptional strength, while the case-hardened...09240123- SKU:
- 09240123
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- SILICONE
- OUTSIDE DIAMETER METRIC:
- 24 MM
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- INSIDE DIAMETER METRIC:
- 19 MM
- LENGTH METRIC:
- 24.8 MM
- PRODUCT NAME:
- BEARING
- APPLICATION:
- PISTON
$23.99 -
Wiseco Connecting Rod Kit Racer Elite Honda CRF250R 2004-2017 WPR1334
WISECO
$447.06Experience unparalleled performance with the WISECO Racer Elite Connecting Rod Kit WPR1334, expertly crafted from high-quality billet materials in the U.S.A. This kit is designed for racers seeking superior strength and reliability, ensuring your engine...09230590- SKU:
- 09230590
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- UNITS:
- KIT
- TYPE:
- RACER ELITE
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- OFF-ROAD
$447.06 -
Wiseco Engine Rebuild Kit for 2002-2003 Kawasaki KX250 PWR128-100
WISECO
$659.95Revitalize your engine with the WISECO Engine Rebuild Kit PWR128-100, designed for both 4-stroke and 2-stroke applications. This comprehensive kit offers all the essential components needed for a complete engine overhaul, ensuring optimal performance and...09031607- SKU:
- 09031607
- Availability:
- Ships Same Business Day
- Weight:
- 14.00 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- BORE SIZE METRIC:
- 66.40 MM
$659.95Qty in Cart: 0Quantity:Price:$659.95Subtotal: -
Wiseco Engine Rebuild Kit for 2006 KTM 250 SX 66.40mm PWR179-100
WISECO
$831.10Revitalize your engine with the WISECO Engine Rebuild Kit PWR179-100, designed for both performance and reliability. This comprehensive kit includes everything needed for a full engine overhaul, ensuring your machine runs at its best. With high-quality...09031660- SKU:
- 09031660
- Availability:
- Ships Same Business Day
- Weight:
- 13.10 LBS
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 66.40 MM
$831.10 -
Wiseco Engine Rebuild Kit for KTM 300 XC 2008-2015 PWR238-101
WISECO
$967.55Revitalize your engine with the WISECO Engine Rebuild Kit PWR238-101, designed for optimal performance and longevity. This comprehensive kit includes everything you need for a complete engine rebuild, ensuring your machine runs like new. Whether you’re...09031666- SKU:
- 09031666
- Availability:
- Ships Same Business Day
- Weight:
- 14.20 LBS
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- BORE SIZE METRIC:
- 72.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$967.55 -
Wiseco Ring Set 66.75mm Honda CR250R 1984-1985 2628CD
WISECO
$49.95The WISECO Ring Set 2628CD is expertly designed to enhance the performance and longevity of your engine. Each set is meticulously crafted for a single piston, ensuring a precise fit and optimal sealing. Upgrade your engine's efficiency and reliability...2628CD- SKU:
- 2628CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PISTON MATERIAL:
- ALUMINUM
- DISPLACEMENT:
- 195 CC
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 66.75 MM
- UNITS:
- SET
- DISPLACEMENT:
- 246 CC
$49.95 -
Wiseco Ring Set 67.25mm Honda TRX250R 1986-1989 Suzuki LT250R 1987-1992 2648CD
WISECO
$49.95The WISECO Ring Set 2648CD is engineered for optimal performance and durability, making it an essential upgrade for your engine. Designed specifically for one piston, this ring set ensures a precise fit and reliable sealing, enhancing overall engine...2648CD- SKU:
- 2648CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- BORE SIZE METRIC:
- 67.25 MM
- PRODUCT NAME:
- PISTON RING
- DISPLACEMENT:
- 67,25 CC
- UNITS:
- SET
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$49.95 -
Wiseco Piston Ring Set 67.40mm for Kawasaki KX250 1987-1991 2652CD
WISECO
$49.95The WISECO Ring Set 2652CD is engineered for optimal performance and durability, tailored specifically for high-performance engines. Each set is designed for a single piston, ensuring a precise fit that enhances engine efficiency and longevity. ...2652CD- SKU:
- 2652CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- DISPLACEMENT:
- 249 CC
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- PISTON MATERIAL:
- ALUMINUM
- BORE SIZE METRIC:
- 67.40 MM
$49.95 -
Wiseco Piston Ring Set 67.5mm Bore Honda CR250R 1984-2004 2658CD
WISECO
$49.95The WISECO Ring Set 2658CD is engineered for optimal performance and durability, making it an essential upgrade for your engine. Designed specifically for one piston, this ring set ensures a precise fit and reliable sealing under extreme conditions...2658CD- SKU:
- 2658CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 67.50 MM
- DISPLACEMENT:
- 612 CC
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 594 CC
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- UNITS:
- SET
$49.95 -
Wiseco Ring Set 67.75mm Kawasaki KX250 1987-1989 2668CD
WISECO
$49.95The WISECO Ring Set 2668CD is engineered for optimal performance and durability, designed specifically for a single piston. This high-quality ring set ensures a reliable seal and improved engine efficiency, making it an essential upgrade for any serious...2668CD- SKU:
- 2668CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- SNOW
- UNITS:
- SET
- BORE SIZE METRIC:
- 67.75 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 246,8 CC
$49.95 -
Wiseco 68mm Piston Ring Set for Arctic Cat Cheetah Touring 1991-1993 2677CD
WISECO
$49.95The WISECO Ring Set 2677CD is engineered for optimal performance and durability, designed specifically for a single piston application. Each set provides precision fit and enhanced sealing, ensuring your engine runs smoothly and efficiently. ...2677CD- SKU:
- 2677CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- DISPLACEMENT:
- 195 CC
- RIDING STYLE:
- ATV
- DISPLACEMENT:
- 246,8 CC
- UNITS:
- SET
- BORE SIZE METRIC:
- 68.00 MM
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- WATERCRAFT
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
$49.95 -
Wiseco Piston Ring Set 79mm Bore for Suzuki DR350 1990-1999 3110XG
WISECO
$49.95The WISECO Ring Set 3110XG is engineered for optimal performance and durability, designed specifically for one piston. Each set ensures a precise fit and enhanced sealing capabilities, making it an essential component for high-performance engines. ...3110XG- SKU:
- 3110XG
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- STREET
- UNITS:
- SET
- PRODUCT NAME:
- PISTON RING
- BORE SIZE METRIC:
- 79.00 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$49.95 -
Wiseco 82.00mm 2-Stroke Piston Ring Set for Arctic Cat Wildcat 700 1991-1993 3228TD
WISECO
$54.95The WISECO Ring Set 3228TD is engineered for optimal performance and longevity, designed specifically for one piston. This high-quality ring set ensures a perfect seal, enhancing engine efficiency and power output. Precision-engineered for a perfect...3228TD- SKU:
- 3228TD
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- BORE SIZE METRIC:
- 82.00 MM
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- WATERCRAFT
$54.95 -
Wiseco Ring Set 83.50mm for Polaris Xplorer 400 4x4 1995-2001 3287TD
WISECO
$54.95The WISECO Ring Set 3287TD is designed for optimal performance and durability in high-performance engines. Each ring set is tailored for a single piston, ensuring a precise fit that enhances engine efficiency and longevity. Upgrade your engine's...3287TD- SKU:
- 3287TD
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- UNITS:
- SET
- BORE SIZE METRIC:
- 83.50 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- ATV
$54.95
