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
-
Wiseco Piston Kit 1995-2021 Kawasaki KX100 RE907M05300
WISECO
$139.95Experience unparalleled performance with the WISECO Racer Elite Piston Kit, engineered for serious racers and enthusiasts. Crafted from advanced 2000 Series alloy, this piston combines exceptional strength with lightweight design, ensuring optimal...09105093- SKU:
- 09105093
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- SKIRT COATING:
- ARMORFIT™
- BORE - OVERSIZE:
- +0,50 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- RACER ELITE
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 53.00 MM
- PISTON MATERIAL:
- 2000 SERIES ALLOY
- PISTON MATERIAL:
- FORGED
$139.95 -
Wossner Connecting Rod Honda CR125R 1981-1984 P2040
WOSSNER
$122.00The WOSSNER Connecting Rod CR125 P2040 is engineered for high-performance crankshaft rebuilds, ensuring durability and reliability on the track. Crafted from premium 8620 forged alloy, this connecting rod is designed to fit OEM bearings and crank pins...09230571- SKU:
- 09230571
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- STYLE:
- STANDARD
$122.00 -
Wossner Connecting Rod Honda CR500R 1987-2001 P2044
WOSSNER
$152.00Elevate your engine's performance with the WOSSNER Connecting Rod CR500 P2044, meticulously engineered for optimal strength and durability. This complete connecting rod kit is designed to seamlessly integrate with OEM components, ensuring a reliable and...09230572- SKU:
- 09230572
- Availability:
- Ships Same Business Day
- Weight:
- 1.51 LBS
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- STYLE:
- STANDARD
$152.00 -
Wossner Connecting Rod for Kawasaki KX60 1983-2003 P2001
WOSSNER
$112.00The WOSSNER Connecting Rod Kit for the KX60 P2001 is engineered to deliver exceptional performance and durability. Crafted from high-quality 8620 forged alloy, this connecting rod ensures a reliable fit and long-lasting strength for your crankshaft...09230388- SKU:
- 09230388
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
$112.00 -
Wossner Connecting Rod Kawasaki KX125 1988-1991 P2033
WOSSNER
$122.00Elevate your engine's performance with the WOSSNER Connecting Rod Kit, meticulously designed for the KX125. This kit ensures a seamless crankshaft rebuild, featuring superior materials and engineering for unmatched durability and efficiency. ...09230391- SKU:
- 09230391
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$122.00 -
Wossner Connecting Rod KTM 300 EXC 1990-2003 P2024
WOSSNER
$122.00Elevate your bike's performance with the WOSSNER Connecting Rod Kit, meticulously engineered for a seamless crankshaft rebuild. Crafted from premium 8620 forged alloy, this connecting rod is designed for durability and precision, ensuring your engine...09230392- SKU:
- 09230392
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$122.00Qty in Cart: 0Quantity:Price:$122.00Subtotal: -
Wossner Connecting Rod Honda CR125R 1988-2007 P2009
WOSSNER
$122.00The WOSSNER Connecting Rod CR125 P2009 is engineered for durability and performance, making it an essential component for your crankshaft rebuild. Crafted from high-quality 8620 forged alloy, this connecting rod guarantees exceptional strength and...09230393- SKU:
- 09230393
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
$122.00 -
Wossner Connecting Rod Yamaha YZ125 2001-2004 P2017
WOSSNER
$122.00Elevate the performance of your YZ125 with the WOSSNER Connecting Rod Kit, meticulously engineered for optimal strength and durability. This comprehensive kit includes everything necessary for a seamless crankshaft rebuild, ensuring compatibility with...09230394- SKU:
- 09230394
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$122.00 -
Wossner Piston Kit 44.45mm Kawasaki KX65 2000-2025 8196DA
WOSSNER
$102.00Elevate your engine's performance with the WOSSNER Piston Kit 8196DA, designed specifically for 2-stroke applications. Crafted from premium materials and engineered to perfection, this piston kit ensures reduced friction, enhanced durability, and optimal...09104873- SKU:
- 09104873
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- STANDARD SERIES
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DISPLACEMENT:
- 64 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- SINGLE RING
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 44.50 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 44.45 MM
$102.00 -
Wossner Piston Kit Yamaha YZ250 1999-2025 66.35mm 8216DA
WOSSNER
$152.00Experience exceptional performance and durability with the WOSSNER Piston Kit 8216DA, meticulously crafted for 2-stroke engines. This comprehensive kit includes everything you need for a seamless installation, ensuring optimal engine efficiency and...09104877- SKU:
- 09104877
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 249 CC
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 66.40 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 66.35 MM
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$152.00 -
Wossner Piston Kit Yamaha YZ250 1999-2026 66.36mm 8216DB
WOSSNER
$152.00Experience unparalleled performance with the WOSSNER Piston Kit 8216DB, meticulously engineered for 2-stroke engines. Crafted from premium materials, this piston kit ensures reduced friction and enhanced durability, delivering a quieter ride and improved...09104878- SKU:
- 09104878
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- DISPLACEMENT:
- 249 CC
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- BORE SIZE METRIC:
- 66.41 MM
- PISTON SIZE METRIC:
- 66.36 MM
- BORE - OVERSIZE:
- +0,01 MM
- BORE - OVERSIZE METRIC:
- +0.01 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$152.00 -
Wossner Piston Kit 71.94mm KTM 300 EXC 2004-2005 8219DA
WOSSNER
$192.00Experience unparalleled performance with the WOSSNER Piston Kit 8219DA, expertly crafted for 2-stroke engines. This high-quality kit includes everything you need for a seamless installation, ensuring optimal efficiency and durability in your engine...09104880- SKU:
- 09104880
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- BORE SIZE METRIC:
- 72.00 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 249 CC
- RIDING STYLE:
- STREET
- TYPE:
- DUAL RING
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 71.94 MM
- UNITS:
- KIT
- DISPLACEMENT:
- 293 CC
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
$192.00 -
Wossner Piston Kit 71.95mm KTM 300 EXC 2004-2005 8219DB
WOSSNER
$192.00Experience unparalleled performance with the WOSSNER Piston Kit 8219DB, designed specifically for 2-stroke engines. Crafted from premium materials, this piston kit ensures reduced friction and enhanced durability, delivering a quieter and more efficient...09104881- SKU:
- 09104881
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- BORE - OVERSIZE:
- +0,01 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 71.95 MM
- BORE SIZE METRIC:
- 72.01 MM
- MODEL:
- STANDARD SERIES
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- TYPE:
- DUAL RING
- BORE - OVERSIZE METRIC:
- +0.01 MM
- DISPLACEMENT:
- 293 CC
$192.00 -
Wossner Piston Kit 53.95mm 2014-2025 Husqvarna TC125 8220DA
WOSSNER
$122.00Elevate your engine's performance with the WOSSNER Piston Kit 8220DA, expertly engineered for 2-stroke applications. Crafted from high-quality 4032 T6 forged aluminum alloy, this piston kit ensures durability and efficiency, providing a quieter ride and...09104884- SKU:
- 09104884
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- BORE SIZE METRIC:
- 54.00 MM
- TYPE:
- SINGLE RING
- UNITS:
- KIT
- DISPLACEMENT:
- 124 CC
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 53.95 MM
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
$122.00 -
Wossner Piston Kit 53.96mm 2007-2023 KTM 125 SX 8220DB
WOSSNER
$122.00Experience unparalleled performance with the WOSSNER Piston Kit 8220DB, designed specifically for 2-stroke engines. This premium piston kit combines advanced engineering and high-quality materials to enhance your engine's efficiency and longevity. ...09104885- SKU:
- 09104885
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- DISPLACEMENT:
- 124 CC
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SINGLE RING
- UNITS:
- KIT
- BORE - OVERSIZE:
- +0,01 MM
- BORE - OVERSIZE METRIC:
- +0.01 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- BORE SIZE METRIC:
- 54.01 MM
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 53.96 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
$122.00 -
Wossner 85.93mm Piston Kit Kawasaki KX500 1988-2004 8228DA
WOSSNER
$192.00Experience unparalleled performance with the WOSSNER Piston Kit 8228DA, designed specifically for 2-stroke engines. Crafted with precision engineering and high-quality materials, this piston kit enhances your engine's efficiency and durability, ensuring...09104889- SKU:
- 09104889
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- DISPLACEMENT:
- 499 CC
- MODEL:
- STANDARD SERIES
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 86.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 85.93 MM
$192.00 -
Wossner Piston Kit for KTM 65 SX 2009-2025 8241DA
WOSSNER
$102.00Experience unparalleled performance with the WOSSNER Piston Kit 8241DA, meticulously engineered for 2-stroke engines. Crafted from premium materials, this piston kit enhances your engine's efficiency while minimizing friction and noise, ensuring a...09104890- SKU:
- 09104890
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE SIZE METRIC:
- 45.02 MM
- DISPLACEMENT:
- 64 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- SINGLE RING
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 44.96 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
$102.00 -
Wossner Piston Kit 45.03mm for KTM 65 SX 2009-2025 Husqvarna TC65 2017-2025 GasGas MC65 2021-2025 8241DB
WOSSNER
$102.00Experience unmatched performance with the WOSSNER Piston Kit 8241DB, expertly engineered for 2-stroke engines. This premium piston kit combines advanced materials and innovative design to enhance engine efficiency and durability, ensuring a smoother and...09104891- SKU:
- 09104891
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 45.03 MM
- TYPE:
- SINGLE RING
- DISPLACEMENT:
- 64 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON SIZE METRIC:
- 44.97 MM
- RIDING STYLE:
- OFF-ROAD
$102.00 -
Wossner Piston Kit Honda CR125R 1985-1986 8127DA
WOSSNER
$132.00Elevate your engine's performance with the WOSSNER Piston Kit 8127DA, designed for optimal efficiency and durability. Crafted from high-quality 4032 T6 forged aluminum alloy, this piston kit ensures reduced friction and noise, enhancing your ride's...09105542- SKU:
- 09105542
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 123 CC
- MODEL:
- STANDARD SERIES
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 54.00 MM
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- DUAL RING
- PISTON SIZE METRIC:
- 53.94 MM
$132.00 -
Wossner Piston Kit Kawasaki KX250 1987-1989 67.35mm 8129DB
WOSSNER
$162.00Experience unparalleled performance with the WOSSNER Piston Kit 8129DB, expertly crafted for two-stroke engines. This high-quality piston kit features advanced engineering and materials, ensuring optimal efficiency and durability for high-load...09105545- SKU:
- 09105545
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- BORE SIZE METRIC:
- 67.41 MM
- UNITS:
- KIT
- MODEL:
- STANDARD SERIES
- PISTON SIZE METRIC:
- 67.35 MM
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +0.01 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- +0,01 MM
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- FORGED
- TYPE:
- DUAL RING
$162.00
