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 Ring Set 86.50mm Kawasaki KX500 1988-2004 3405TD
WISECO
$54.95The WISECO Ring Set 3405TD is engineered for high-performance applications, ensuring optimal sealing and durability for your piston. Designed with precision, this ring set enhances engine efficiency and longevity, making it an essential upgrade for...3405TD- SKU:
- 3405TD
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PISTON RING
- BORE SIZE METRIC:
- 86.50 MM
- RIDING STYLE:
- ATV
- UNITS:
- SET
$54.95 -
Wiseco 80.50mm Ring Set for Arctic Cat Thundercat 900 1993-1997 3169TD
WISECO
$54.95The WISECO Ring Set 3169TD is engineered for optimal performance, providing a perfect fit for your piston. Designed with precision, these rings enhance engine efficiency and durability, ensuring a reliable operation under demanding conditions. ...3169TD- SKU:
- 3169TD
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 80.50 MM
- UNITS:
- SET
- PISTON MATERIAL:
- ALUMINUM
$54.95 -
WISECO Ring Set 3307XC
WISECO
$49.95Each ring set is for one piston3307XC- SKU:
- 3307XC
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- BORE SIZE METRIC:
- 84.00 MM
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- STREET
- UNITS:
- SET
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$49.95 -
Wiseco 83mm Piston Ring Set for Kawasaki ZX-12R 2000-2005 3268XG
WISECO
$49.95The WISECO Ring Set 3268XG is engineered for optimal performance and durability, designed specifically for one piston. This premium ring set ensures a perfect fit and enhances the efficiency of your engine, making it ideal for both street and racing...3268XG- SKU:
- 3268XG
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- BORE SIZE METRIC:
- 83.00 MM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- ATV
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
$49.95 -
Wiseco Piston Kit Suzuki DR650S 1990-1993 4597M09600
WISECO
$239.95Elevate your Suzuki motorcycle’s performance with the Wiseco Piston Kit, meticulously designed for both trail adventurers and street riders. This kit combines advanced engineering with high-grade materials, ensuring your engine achieves optimal power and...09101659- SKU:
- 09101659
- Availability:
- Ships Same Business Day
- Weight:
- 1.27 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- DISPLACEMENT:
- 654 CC
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 90.40 MM
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 96.00 MM
- PISTON MATERIAL:
- FORGED
$239.95 -
Wiseco Piston Kit Yamaha XT500 1976-1981 87.50mm 9:1 4764M08750
WISECO
$239.95Transform your Yamaha TT500, XT500, or SR500 into a powerhouse with the Wiseco Piston Kit. Designed for enthusiasts seeking peak performance, this kit combines cutting-edge technology with unmatched durability, ensuring your bike excels on both rugged...09101666- SKU:
- 09101666
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- BORE - OVERSIZE METRIC:
- +0.05 MM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 505 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- +0,05 MM
- BORE SIZE METRIC:
- 87.50 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 84.00 MM
- UNITS:
- EACH
$239.95 -
Wiseco Piston Kit 69mm 1989-1995 Suzuki RM250 642M06900
WISECO
$224.95Elevate your Suzuki's performance with the Wiseco Piston Kit, meticulously crafted to enhance power and reliability. This kit is designed for serious riders who demand excellence, offering unmatched durability and precision for every ride. Advanced...09101220- SKU:
- 09101220
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE - OVERSIZE:
- +2,00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE METRIC:
- +2.00 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 69.00 MM
- DISPLACEMENT:
- 246 CC
- STROKE LENGTH METRIC:
- 70.80 MM
$224.95 -
Wiseco 200 EXC 1998-2002 Piston Kit with Gaskets PK1369
WISECO
$239.95Unleash the full potential of your KTM with the Wiseco Piston Kit. Designed for performance enthusiasts, this kit combines cutting-edge engineering with durable materials, ensuring your engine operates at peak efficiency. Experience enhanced power...09030512- SKU:
- 09030512
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- DISPLACEMENT:
- 193 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 64.00 MM
- PISTON DIAMETER METRIC:
- 63.95 MM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 60.00 MM
- BORE - OVERSIZE METRIC:
- STANDARD
- SKIRT COATING:
- ARMORGLIDE®
$239.95 -
Wiseco Piston Kit for Yamaha YZ125 2005-2021 PK1390
WISECO
$224.95Elevate the performance of your Yamaha YZ125 or YZ125X with the Wiseco Piston Kit PK1390. This premium kit is designed for serious riders seeking unmatched power and reliability, ensuring your bike performs at its best in any situation. High-Performance...09030513- SKU:
- 09030513
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- MODEL:
- RACER'S CHOICE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
- COOLING SYSTEM:
- LIQUID COOLED
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- DISPLACEMENT:
- 125 CC
- STROKE LENGTH METRIC:
- 54.50 MM
$224.95 -
Wiseco Piston Kit Yamaha YZ85 2002-2021 5.50mm Oversize 767M05250
WISECO
$169.95Elevate your Yamaha YZ80 or YZ85's performance with the premium Wiseco Piston Kit. Designed specifically for 2-stroke engines, this kit offers superior strength and reliability, ensuring you get the most out of every ride. Experience enhanced power...09100366- SKU:
- 09100366
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE - OVERSIZE METRIC:
- +5.50 MM
- DISPLACEMENT:
- 103,5 CC
- STROKE LENGTH METRIC:
- 47.80 MM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 52.50 MM
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- EACH
- BORE - OVERSIZE:
- +5,50 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
Wiseco Piston Kit 47.50mm 11:1 Yamaha TT-R90 2003 4840M04750
WISECO
$154.95Transform your riding experience with the Wiseco Piston Kit, expertly engineered for the Yamaha TTR90. This kit is designed for riders seeking peak performance and durability, ensuring that your engine operates at its best in any environment. Precision...09100369- SKU:
- 09100369
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- BORE SIZE METRIC:
- 47.50 MM
- DISPLACEMENT:
- 92 CC
- STROKE LENGTH METRIC:
- 51.80 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- RIDING STYLE:
- OFF-ROAD
$154.95 -
Wiseco Piston Kit Standard Yamaha XT 350 1985-2000 4674M08700
WISECO
$174.95Elevate your riding experience with the Wiseco Piston Kit, engineered specifically for the Yamaha TT350 and XT350. This high-performance kit combines advanced materials and innovative design to enhance engine efficiency and power, ensuring you get the...09101661- SKU:
- 09101661
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BORE SIZE METRIC:
- 87.00 MM
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 354 CC
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 59.60 MM
$174.95 -
Wiseco Piston Kit Standard Suzuki RM-Z 450 2008-2012 4953M09600
WISECO
$239.95Unlock the full potential of your Suzuki RMZ450 or RMX450Z with the Wiseco Piston Kit. Engineered for riders who seek exceptional power and reliability, this kit enhances performance through cutting-edge technology and superior materials, ensuring an...09101679- SKU:
- 09101679
- Availability:
- Ships Same Business Day
- Weight:
- 0.98 LBS
- BORE - OVERSIZE:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 62.80 MM
- UNITS:
- EACH
- BORE SIZE METRIC:
- 96.00 MM
- DISPLACEMENT:
- 450 CC
- SKIRT COATING:
- MOLY COATED
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- STOCK
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
$239.95 -
Wiseco 50cc Piston for KTM 50 SX 1998-2008 698M03900
WISECO
$104.95Unleash the power of your bike with the Wiseco Piston Kit, designed for riders who demand the best in performance and reliability. This high-quality piston kit enhances your engine's efficiency and ensures a smooth, powerful ride, whether on the track or...09101692- SKU:
- 09101692
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 41.70 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON
- DISPLACEMENT:
- 50 CC
- BORE SIZE METRIC:
- 39.00 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$104.95 -
Wiseco Piston Kit +2.10 Kawasaki KX 250 2004 843M06850
WISECO
$184.95Elevate your motorcycle's performance with the Wiseco Piston Kit, meticulously crafted for riders who demand excellence. This kit combines cutting-edge technology with premium materials to ensure your engine operates at its peak, delivering unmatched...09100664- SKU:
- 09100664
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE SIZE METRIC:
- 68.50 MM
- ENGINE TYPE:
- 2-STROKE
- BORE - OVERSIZE:
- +2,10 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +2.10 MM
- DISPLACEMENT:
- 265 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
$184.95 -
WISECO Piston Kit - +4.50 mm - CR 85/80 766M05200
WISECO
$169.95Unleash the full potential of your Honda motocross bike with the Wiseco Piston Kit. Engineered for performance and reliability, this kit is designed to provide riders with the power and durability needed for trail and track dominance. Key...09100322- SKU:
- 09100322
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +4.50 MM
- BORE SIZE METRIC:
- 52.00 MM
- DISPLACEMENT:
- 101,50 CC
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- EACH
- BORE - OVERSIZE:
- +4,50 MM
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH METRIC:
- 47.80 MM
$169.95 -
Wiseco Piston Kit 0.50mm Oversize for 2004-2013 Honda CRF80F 4665M04800
WISECO
$154.95Enhance your engine's capabilities with the Wiseco Piston Kit, meticulously engineered for superior performance and reliability. Ideal for both competitive racing and adventurous trail riding, this kit is designed to optimize engine efficiency while...09100324- SKU:
- 09100324
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- BORE SIZE METRIC:
- 48.00 MM
- DISPLACEMENT:
- 81 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 45.00 MM
- UNITS:
- EACH
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- RIDING STYLE:
- OFF-ROAD
$154.95Qty in Cart: 0Quantity:Price:$154.95Subtotal: -
Wiseco Piston Kit 78mm 10.5:1 Compression for 1986-2004 Honda XR250R 4466M07800
WISECO
$219.95Elevate your riding experience with the Wiseco Piston Kit, meticulously crafted for Honda XR250R and XR250L models. This high-performance kit is designed to enhance engine efficiency and power, making it a must-have for serious off-road enthusiasts...09100755- SKU:
- 09100755
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE - OVERSIZE:
- +5,00 MM
- BORE SIZE METRIC:
- 78.00 MM
- DISPLACEMENT:
- 250 CC
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE METRIC:
- +5.00 MM
- PRODUCT NAME:
- PISTON
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 59.50 MM
- UNITS:
- EACH
$219.95 -
Wiseco Piston Kit Honda CRF450R 2017-2025 4823M09600
WISECO
$269.95Elevate your riding experience with the Wiseco Piston Kit, meticulously crafted for dedicated off-road riders. This performance-enhancing kit integrates advanced materials and engineering to provide a significant boost in power and reliability for your...09100758- SKU:
- 09100758
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 96.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- SKIRT COATING:
- ARMORGLIDE®
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 62.10 MM
- UNITS:
- EACH
$269.95 -
Wiseco Piston Kit 52mm 2003-2018 KTM 85/105 SX 855M05200
WISECO
$169.95Elevate your motorcycle's performance with the Wiseco Piston Kit. Designed for high-demand 2-stroke engines, this advanced kit enhances power delivery and reliability, making it an essential upgrade for both competitive racers and weekend riders...09030587- SKU:
- 09030587
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BORE - OVERSIZE:
- STANDARD
- DISPLACEMENT:
- 104 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- ARMORGLIDE®
- STROKE LENGTH METRIC:
- 48.95 MM
- BORE SIZE METRIC:
- 52.00 MM
- ENGINE TYPE:
- 2-STROKE
$169.95
