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 48.50mm Yamaha YZ80 1985-1987 520M04850
WISECO
$134.95A worn or damaged piston directly cuts into your YZ80's power output and engine reliability. The Wiseco 520M04850 restores—or exceeds—OEM performance with aerospace-grade construction and precision tolerances that maximize combustion efficiency. This...520M04850- SKU:
- 520M04850
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 48.50 MM
- DISPLACEMENT:
- 82 CC
- STROKE LENGTH:
- 45,60 MM
- BORE - OVERSIZE:
- +0,50 MM
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 45.60 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- UNITS:
- EACH
$134.95 -
Wiseco Piston Standard Yamaha IT 200 1984 522M06600
WISECO
$184.95When your Yamaha IT200's original piston shows wear, combustion efficiency drops and power delivery suffers. The Wiseco 522M06600 restores—and exceeds—stock performance with forged aluminum construction engineered to handle the demands of serious...522M06600- SKU:
- 522M06600
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 195 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- STROKE LENGTH:
- 57,00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 66.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 57.00 MM
$184.95 -
Wiseco Piston Kit 67.00mm Oversize Yamaha IT200 1984-1986 522M06700
WISECO
$193.95If you're running a 1984-1986 Yamaha IT200, a worn or damaged piston directly impacts throttle response, power delivery, and engine reliability. The Wiseco 522M06700 restores—and exceeds—OEM performance with aerospace-grade 4032 aluminum and a precision...522M06700- SKU:
- 522M06700
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- BORE - OVERSIZE:
- +1,00 MM
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 57.00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 67.00 MM
- DISPLACEMENT:
- 195 CC
- STROKE LENGTH:
- 57,00 MM
$193.95 -
Wiseco Piston Kit Standard Bore 66mm Kawasaki KDX 200 1986-2006 711M06600
WISECO
$199.95If your Kawasaki KDX200 is losing compression, burning oil, or showing signs of worn ring wear, a piston kit refresh is essential to restore power delivery and engine reliability. Wiseco's 711M06600 is CNC-machined to OEM specifications with premium...711M06600- SKU:
- 711M06600
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- ENGINE TYPE:
- 2-STROKE
- STROKE LENGTH:
- 58,00 MM
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 66.00 MM
- DISPLACEMENT:
- 198 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 58.00 MM
$199.95 -
Wiseco Piston Kit 66.50mm Oversize Kawasaki KDX200 1986-1988 711M06650
WISECO
$199.95The Wiseco 711M06650 is engineered for riders who demand precision and reliability from their 2-stroke engine. If you're rebuilding a KDX200 or pushing for better throttle response and peak power, this complete piston kit delivers the CNC-machined...711M06650- SKU:
- 711M06650
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE - OVERSIZE:
- +0,50 MM
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH:
- 58,00 MM
- STROKE LENGTH METRIC:
- 58.00 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 66.50 MM
- DISPLACEMENT:
- 198 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
$199.95 -
Wiseco Piston Kit Standard 66.40mm Bore Honda CR250R 1997-2001 702M06640
WISECO
$221.95If you're running a CR250R at the track or on the trail, piston durability and consistent power delivery directly impact your lap times and engine longevity. Wiseco's forged high-silicon aluminum construction delivers the strength needed for sustained...702M06640- SKU:
- 702M06640
- Availability:
- Ships Same Business Day
- Weight:
- 0.64 LBS
- STROKE LENGTH:
- 72,00 MM
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE SIZE METRIC:
- 66.40 MM
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- FORGED
$221.95 -
Wiseco Piston 1.10mm Oversize for 2001 Honda CR250R 702M06750
WISECO
$199.95When you're pushing your CR250 to the edge, your factory piston becomes the weakest link. The Wiseco 702M06750 is built to handle the demands of high-RPM racing with a high-silicon aluminum forging that resists detonation and thermal stress far better...702M06750- SKU:
- 702M06750
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- DISPLACEMENT:
- 249 CC
- BORE - OVERSIZE:
- +1,10 MM
- BORE - OVERSIZE METRIC:
- +1.10 MM
- BORE SIZE METRIC:
- 67.50 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- STROKE LENGTH:
- 72,00 MM
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 72.00 MM
$199.95 -
Wiseco Piston Kit 77mm 13.4:1 Compression for Suzuki RM-Z250 2010-2018 PK1877
WISECO
$291.95When you're rebuilding your RM-Z250's top end, you need a piston kit that delivers repeatable power and reliability without compromise. Wiseco's forged aluminum construction and 13.4:1 compression ratio give you the horsepower and torque gains you're...09031166- SKU:
- 09031166
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- SKIRT COATING:
- ARMORGLIDE®
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 77.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.4:1
- DISPLACEMENT:
- 250 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 76.96 MM
- MODEL:
- FORGED SERIES
- STROKE LENGTH METRIC:
- 53.60 MM
- TYPE:
- TOP END
$291.95 -
Wiseco Top End Bearing for Kawasaki KDX175 1980-1981 B1016
WISECO
$25.95The Wiseco B1016 top end bearing is engineered to handle sustained high-RPM performance on your KDX175, delivering the reliability you need when every tenth of a second counts. Built from high-silicon aluminum with case-hardened construction, this...B1016- SKU:
- B1016
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- PISTON
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- OUTSIDE DIAMETER METRIC:
- 20 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- SNOW
- INSIDE DIAMETER METRIC:
- 16 MM
- LENGTH METRIC:
- 19.5 MM
- MATERIAL:
- SILICONE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$25.95 -
Wiseco Cam Chain for Honda XR650R 2000-2007 CC006
WISECO
$87.95A worn or compromised cam chain can lead to timing slippage and catastrophic engine damage—especially critical on high-revving machines like the XR650R. The Wiseco CC006 delivers the precision fitment and material integrity needed to maintain accurate...09250306- SKU:
- 09250306
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- TYPE:
- CAM
- PRODUCT NAME:
- CHAIN
- CHAIN SIZE:
- 92RH2010
- NUMBER OF LINKS:
- 122
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$87.95 -
Wiseco Cam Chain for Kawasaki KX250F 2004-2016 CC007
WISECO
$82.95Stock cam chains wear under the demands of high-performance riding, leading to slack, noise, and potential valve timing issues that rob power and reliability. The Wiseco CC007 replaces that worn chain with precision-engineered strength, designed to...09250307- SKU:
- 09250307
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- TYPE:
- CAM
- CHAIN SIZE:
- 92RH2010
- PRODUCT NAME:
- CHAIN
- NUMBER OF LINKS:
- 114
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$82.95 -
Wiseco Cam Chain for Yamaha YZ400F 1998-1999 YZ426F 2000-2002 WR400F 1998-2000 WR426F 2001-2002 CC008
WISECO
$87.95A worn or stretched cam chain compromises valve timing precision and can lead to catastrophic engine damage if left unchecked. The Wiseco CC008 delivers OEM-exceeding strength and reliability across multiple Yamaha 4-stroke models, ensuring consistent...09250308- SKU:
- 09250308
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- CHAIN
- CHAIN SIZE:
- 92RH2010
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM
- NUMBER OF LINKS:
- 120
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$87.95 -
Wiseco Cam Chain for Kawasaki KFX400 2003-2005 and Suzuki DR-Z400S 2000-2022 CC010
WISECO
$92.95A worn or failing cam chain compromises valve timing precision, leading to power loss, rough idle, and potential engine damage. The Wiseco CC010 delivers OEM-exceeding durability with premium construction that minimizes friction and extends service life,...09250310- SKU:
- 09250310
- Availability:
- Ships Same Business Day
- Weight:
- 0.47 LBS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- CHAIN
- CHAIN SIZE:
- 82RH2010
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM
- NUMBER OF LINKS:
- 128
- RIDING STYLE:
- STREET
$92.95 -
Wiseco Cam Chain for Suzuki RM-Z450 2005-2020 RMX450Z 2010-2019 CC011
WISECO
$92.95Cam chain wear directly impacts valve timing accuracy and engine reliability—especially critical in high-revving performance engines where timing drift causes power loss and potential valve damage. The Wiseco CC011 replaces worn OEM chains with...09250311- SKU:
- 09250311
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 82RH2010
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM
- PRODUCT NAME:
- CHAIN
- NUMBER OF LINKS:
- 124
$92.95 -
Wiseco Cam Chain Yamaha YZ450F 2003-2022 CC015
WISECO
$103.95The stock cam chain on your YZ450F will eventually stretch and wear under the demands of racing and high-RPM riding. Wiseco's CC015 replaces that weak link with a purpose-built chain that runs tighter, lasts longer, and maintains precise valve timing...09250315- SKU:
- 09250315
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
- CHAIN SIZE:
- 98XRH2010
- PRODUCT NAME:
- CHAIN
- TYPE:
- CAM
- NUMBER OF LINKS:
- 118
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$103.95 -
Wiseco Ring Set 66.25mm for Honda CR250R 1981-1985 2608CD
WISECO
$52.95Worn or damaged piston rings directly kill engine performance, allowing combustion pressure to escape past the piston and into the crankcase—a condition called "blow-by." The Wiseco 2608CD Ring Set restores proper compression, sealing efficiency, and...2608CD- SKU:
- 2608CD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- SNOW
- BORE SIZE METRIC:
- 66.25 MM
- DISPLACEMENT:
- 195 CC
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 246 CC
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- SET
$52.95 -
Wiseco CR500R 1984-2000 Ring Set 3544TD
WISECO
$57.95Engine ring sets are critical to combustion efficiency and longevity—they seal combustion pressure, control oil consumption, and manage heat dissipation. The Wiseco CR500R 3544TD is engineered to OEM or better specifications, making it the ideal choice...3544TD- SKU:
- 3544TD
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- BORE SIZE METRIC:
- 90.00 MM
- RIDING STYLE:
- OFF-ROAD
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
$57.95 -
Wiseco 91.00mm Piston Ring Set for 1984-2001 Honda CR500R 1982-1983 Honda CR480R 3583TD
WISECO
$49.56Piston rings are critical to engine sealing and combustion efficiency—worn or improper rings lead to blow-by, power loss, and accelerated engine wear. The Wiseco 3583TD ring set delivers precision-engineered sealing for CR500R and CR480R engines,...3583TD- SKU:
- 3583TD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- BORE SIZE METRIC:
- 91.00 MM
- UNITS:
- SET
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
$49.56 -
Wiseco 88.50mm Ring Set for Yamaha YZ490 1982-1990 3484TD
WISECO
$49.56A worn or damaged ring set compromises compression, increases blow-by, and kills both power and fuel economy. The Wiseco 3484TD delivers precision-engineered sealing geometry built specifically for your YZ490, restoring cylinder integrity and maximizing...3484TD- SKU:
- 3484TD
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- BORE SIZE METRIC:
- 88.50 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
$49.56 -
Wiseco Ring Set 73.50mm Honda XR250R 1986-2004 2894XC
WISECO
$52.95Proper ring sealing is critical to engine efficiency and longevity—worn or inadequate rings allow compression loss and increased blow-by, robbing your XR250R of power and damaging your engine oil. The Wiseco 2894XC ring set restores factory sealing...2894XC- SKU:
- 2894XC
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- UNITS:
- SET
- BORE SIZE METRIC:
- 73.50 MM
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 250 CC
$52.95
