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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HOT RODS Crankshaft Kit CBK0102
HOT RODS
$368.95HOT RODS Crankshaft Kit CBK0102Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely...09210344- SKU:
- 09210344
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$368.95 -
HOT RODS Crankshaft 4075
HOT RODS
$306.95HOT RODS Crankshaft 4075Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and ready for...09210127- SKU:
- 09210127
- Availability:
- Ships Same Business Day
- Weight:
- 5.25 LBS
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 150 CC
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 43.80 MM
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
$306.95 -
HOT RODS Crankshaft 4083
HOT RODS
$404.95HOT RODS Crankshaft 4083Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and ready for...09210128- SKU:
- 09210128
- Availability:
- Ships Same Business Day
- Weight:
- 7.17 LBS
- STROKE LENGTH METRIC:
- 52.20 MM
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 250 CC
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
$404.95 -
COMETIC Top End Gasket Set - Gas Gas C3261
COMETIC
$56.95COMETIC Top End Gasket Set Gas Gas C3261Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the...09344128- SKU:
- 09344128
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$56.95 -
Hot Cams Cam Chain for Kawasaki KX450F 2006-2008 and KLX450R 2008-2009 HC98XRH2010124
HOT CAMS
$57.95HOT CAMS Cam Chain HC98XRH2010124 Experience unparalleled performance with the HOT CAMS Cam Chain HC98XRH2010124. Designed with exclusive heat-treated links, this silent chain offers superior friction and impact resistance, ensuring a smooth and reliable...09250765- SKU:
- 09250765
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- MODEL:
- SILENT
- RIDING STYLE:
- STREET
- BASE FINISH:
- RAW
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM
- CHAIN SIZE:
- 98XRH2010
- PRODUCT NAME:
- CHAIN
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- UNITS:
- EACH
$57.95Qty in Cart: 0Quantity:Price:$57.95Subtotal: -
Hot Cams Cam Chain for Husqvarna FC450 2016-2018 and KTM 450 SX-F 2016-2018 HC92RH2015108
HOT CAMS
$71.95HOT CAMS Cam Chain HC92RH2015108 Experience superior performance with the HOT CAMS Cam Chain HC92RH2015108, designed for optimal durability and efficiency. Crafted with exclusive heat-treated links, this silent chain ensures minimal friction and...09250822- SKU:
- 09250822
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BASE FINISH:
- RAW
- CHAIN SIZE:
- 92RH2015
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CHAIN
- MODEL:
- SILENT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- UNITS:
- EACH
$71.95 -
Hot Cams Cam Chain for KTM 350 EXC-F 2012-2016 HC98XRH2015112
HOT CAMS
$102.95HOT CAMS Cam Chain HC98XRH2015112 Experience superior performance with the HOT CAMS Cam Chain HC98XRH2015112. Designed for durability and efficiency, this silent chain features advanced heat-treated links that provide exceptional resistance to friction...09250823- SKU:
- 09250823
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BASE FINISH:
- RAW
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- MODEL:
- SILENT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM
- CHAIN SIZE:
- 98XRH2015
- COLOR/FINISH:
- RAW
- PRODUCT NAME:
- CHAIN
- UNITS:
- EACH
$102.95 -
Hot Cams Cam Chain for Yamaha TT 600 1983-1986 HC82RH2015126
HOT CAMS
$51.95HOT CAMS Cam Chain HC82RH2015126 Experience unparalleled performance with the HOT CAMS Cam Chain HC82RH2015126. Designed with exclusive heat-treated links, this silent chain ensures superior friction and impact resistance, making it a top choice for...09250860- SKU:
- 09250860
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- CHAIN SIZE:
- 82RH2015
- COLOR/FINISH:
- RAW
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- CHAIN
- BASE FINISH:
- RAW
- RIDING STYLE:
- STREET
- TYPE:
- CAM
- MODEL:
- SILENT
$51.95 -
Hot Cams Cam Chain Yamaha YFZ450R 2009-2018 HC98XRH2010120
HOT CAMS
$43.95HOT CAMS Cam Chain HC98XRH2010120 Experience superior performance with the HOT CAMS Cam Chain HC98XRH2010120, designed for enhanced durability and reliability. Its exclusive heat-treated links provide exceptional resistance to friction and impact,...09250864- SKU:
- 09250864
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- BASE FINISH:
- RAW
- MATERIAL:
- STEEL
- MODEL:
- SILENT
- TYPE:
- CAM
- CHAIN SIZE:
- 98XRH2010
- RIDING STYLE:
- ATV
- COLOR/FINISH:
- RAW
- PRODUCT NAME:
- CHAIN
- UNITS:
- EACH
$43.95 -
Hot Cams Camshaft for Honda CRF250R 2010-2015 1264-1
HOT CAMS
$362.95HOT CAMS Camshaft 1264-1 Elevate your engine's performance with the HOT CAMS Camshaft 1264-1, engineered for high-octane racing applications. These precision-crafted camshafts offer a seamless drop-in installation, enhancing both torque and horsepower...09250865- SKU:
- 09250865
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 266°
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- ITR DESIGN
- APPLICATION:
- INTAKE
- EXHAUST LIFT METRIC:
- 8.84 MM
- UNITS:
- EACH
- INTAKE DURATION IMPERIAL:
- 241°
- INTAKE LIFT METRIC:
- 8.26 MM
- PRODUCT NAME:
- CAMSHAFT
$362.95 -
Hot Cams Stage 1 Intake Camshaft for 2010-2018 Suzuki RM-Z250 2200-1IN
HOT CAMS
$264.95HOT CAMS Camshaft 2200-1IN Elevate your engine's performance with the HOT CAMS 2200-1IN Camshaft, engineered for high-performance racing applications. Available in Stage 1 and Stage 2 options, these camshafts are designed for seamless installation with...09250656- SKU:
- 09250656
- Availability:
- Ships Same Business Day
- Weight:
- 0.87 LBS
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CAMSHAFT
- INTAKE LIFT METRIC:
- 9.40 MM
- UNITS:
- EACH
- INTAKE DURATION IMPERIAL:
- 237°
$264.95Qty in Cart: 0Quantity:Price:$264.95Subtotal: -
Hot Cams Exhaust Camshaft for Suzuki RM-Z250 2010-2018 2201-1E
HOT CAMS
$289.95HOT CAMS Exhaust Camshaft 2201-1E Elevate your engine's performance with the HOT CAMS Exhaust Camshaft 2201-1E, designed for high-performance racing applications. This camshaft optimizes torque and horsepower, ensuring your vehicle delivers exceptional...09250657- SKU:
- 09250657
- Availability:
- Ships Same Business Day
- Weight:
- 1.04 LBS
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 1
- EXHAUST DURATION IMPERIAL:
- 239°
- UNITS:
- EACH
- EXHAUST LIFT METRIC:
- 8.38 MM
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
$289.95Qty in Cart: 0Quantity:Price:$289.95Subtotal: -
Hot Cams Stage 2 Intake Camshaft for Suzuki RM-Z250 2010-2018 2203-2IN
HOT CAMS
$264.95HOT CAMS Camshaft 2203-2IN Upgrade your engine's performance with the HOT CAMS Camshaft 2203-2IN, engineered for high-performance racing. Designed for enthusiasts seeking optimal torque and horsepower, these camshafts are compatible with stock valve...09250659- SKU:
- 09250659
- Availability:
- Ships Same Business Day
- Weight:
- 0.83 LBS
- INTAKE DURATION IMPERIAL:
- 256°
- INTAKE LIFT METRIC:
- 9.40 MM
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- INTAKE
- UNITS:
- EACH
$264.95Qty in Cart: 0Quantity:Price:$264.95Subtotal: -
Hot Cams Exhaust Camshaft Stage 2 for Suzuki RM-Z 250 2010-2018 2204-2E
HOT CAMS
$297.95HOT CAMS Exhaust Camshaft 2204-2E Elevate your racing performance with the HOT CAMS Exhaust Camshaft 2204-2E, designed for enthusiasts seeking optimal power and torque. This high-performance camshaft enhances throttle response and delivers impressive...09250660- SKU:
- 09250660
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- EXHAUST DURATION IMPERIAL:
- 244°
- EXHAUST LIFT METRIC:
- 8.89 MM
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 2
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$297.95Qty in Cart: 0Quantity:Price:$297.95Subtotal: -
Hot Cams Stage 1 Intake Camshaft for 2011-2016 Kawasaki KX250F 2218-1IN
HOT CAMS
$272.95HOT CAMS Camshaft 2218-1IN Unlock the full potential of your engine with the HOT CAMS Camshaft 2218-1IN. Designed for high-performance racing, these camshafts offer a perfect balance between torque and horsepower, tailored for both street and track...09250661- SKU:
- 09250661
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- INTAKE DURATION IMPERIAL:
- 237°
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 1
- APPLICATION:
- INTAKE
- INTAKE LIFT METRIC:
- 9.14 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$272.95 -
Hot Cams Exhaust Camshaft for Kawasaki KX250F 2011-2016 2219-1E
HOT CAMS
$302.95HOT CAMS Exhaust Camshaft 2219-1E Unlock your engine's full potential with the HOT CAMS Exhaust Camshaft 2219-1E, designed for high-performance racing applications. This camshaft enhances throttle response and power delivery across the entire RPM range,...09250662- SKU:
- 09250662
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 1
- EXHAUST LIFT METRIC:
- 8.38 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 239°
$302.95Qty in Cart: 0Quantity:Price:$302.95Subtotal: -
Hot Cams Stage 1 Intake Camshaft for Kawasaki KX450F 2009-2015 2185-1IN
HOT CAMS
$272.95HOT CAMS Camshaft 2185-1IN Elevate your racing experience with the HOT CAMS 2185-1IN camshaft, engineered for high performance and optimal efficiency. Available in Stage 1 and Stage 2 options, these camshafts are designed for seamless integration with...09250553- SKU:
- 09250553
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- INTAKE DURATION IMPERIAL:
- 234°
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CAM
- UNITS:
- EACH
- PRODUCT NAME:
- CAMSHAFT
- APPLICATION:
- INTAKE
- INTAKE LIFT METRIC:
- 9.14 MM
$272.95 -
Hot Cams Exhaust Camshaft for Kawasaki KX450F 2009-2015 2186-1E
HOT CAMS
$289.95HOT CAMS Exhaust Camshaft 2186-1E Unlock the full potential of your engine with the HOT CAMS Exhaust Camshaft 2186-1E, designed for high-performance racing applications. This camshaft enhances throttle response and delivers impressive power gains, making...09250554- SKU:
- 09250554
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- EXHAUST DURATION IMPERIAL:
- 240°
- EXHAUST LIFT METRIC:
- 8.38 MM
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- STAGE 1
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$289.95 -
Hot Cams Stage 2 Intake Camshaft for 2006-2018 Kawasaki KX450F 2187-2IN
HOT CAMS
$272.95HOT CAMS Camshaft 2187-2IN Unlock the full potential of your engine with the HOT CAMS 2187-2IN camshaft. Engineered for high-performance racing, this camshaft enhances throttle response and delivers impressive power gains across the entire RPM range...09250555- SKU:
- 09250555
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- INTAKE DURATION IMPERIAL:
- 250°
- INTAKE LIFT METRIC:
- 9.91 MM
- TYPE:
- CAM
- UNITS:
- EACH
- PRODUCT NAME:
- CAMSHAFT
- APPLICATION:
- INTAKE
- RIDING STYLE:
- OFF-ROAD
$272.95 -
Hot Cams Exhaust Camshaft for Kawasaki KX 450 F 2006-2015 2188-2E
HOT CAMS
$297.95HOT CAMS Exhaust Camshaft 2188-2E Elevate your engine's performance with the HOT CAMS Exhaust Camshaft 2188-2E, designed for high-performance racing applications. This camshaft optimizes throttle response and enhances power delivery across the entire RPM...09250556- SKU:
- 09250556
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- EXHAUST LIFT METRIC:
- 10.80 MM
- TYPE:
- STAGE 2
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 259°
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- OFF-ROAD
$297.95
