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
-
HOT RODS Crankshaft Kit CBK0049
HOT RODS
$370.95If you're building a high-performance engine that demands reliability and power, the HOT RODS Crankshaft Kit CBK0049 delivers factory-matched precision without compromise. This complete assembly arrives pre-assembled and true to OEM specifications,...09210297- SKU:
- 09210297
- Availability:
- Ships Same Business Day
- Weight:
- 6.35 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$370.95 -
HOT RODS Crankshaft Kit CBK0050
HOT RODS
$370.95If you're building a high-performance engine or refreshing a tired bottom end, the HOT RODS Crankshaft Kit CBK0050 delivers factory-matched precision without the OEM price tag. This complete assembly arrives factory-assembled and true to specification,...09210298- SKU:
- 09210298
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$370.95 -
HOT RODS Crankshaft Kit CBK0052
HOT RODS
$397.95If you're building a high-performance engine or restoring a classic with serious power goals, the HOT RODS Crankshaft Kit CBK0052 delivers the durability and precision you need to handle increased displacement and rpm loads. Factory-assembled and tested...09210300- SKU:
- 09210300
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- OEM
$397.95 -
HOT RODS Crankshaft Kit CBK0055
HOT RODS
$662.95If you're building a high-performance engine or restoring a classic, a quality crankshaft assembly is non-negotiable—it's the backbone of reliable power delivery and durability under load. The HOT RODS Crankshaft Kit CBK0055 arrives factory-assembled and...09210303- SKU:
- 09210303
- Availability:
- Ships Same Business Day
- Weight:
- 12.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$662.95 -
HOT RODS Crankshaft Kit CBK0056
HOT RODS
$662.95If you're building a high-performance engine or refreshing a worn bottom end, the HOT RODS Crankshaft Kit CBK0056 delivers the reliability and precision you need for sustained power delivery. Factory-assembled and true to OEM specifications, this...09210304- SKU:
- 09210304
- Availability:
- Ships Same Business Day
- Weight:
- 12.20 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- OEM
$662.95Qty in Cart: 0Quantity:Price:$662.95Subtotal: -
HOT RODS Crankshaft Kit CBK0061
HOT RODS
$835.95If you're building a high-performance engine or restoring a classic with serious power goals, a quality crankshaft assembly is non-negotiable. The HOT RODS CBK0061 kit delivers factory-spec precision with the durability to handle aggressive racing...09210309- SKU:
- 09210309
- Availability:
- Ships Same Business Day
- Weight:
- 10.15 LBS
- TYPE:
- OEM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$835.95 -
HOT RODS Crankshaft Kit CBK0063
HOT RODS
$768.95If you're building a high-performance engine or restoring a classic with serious power in mind, the HOT RODS Crankshaft Kit CBK0063 delivers the durability and precision you need to survive aggressive driving conditions. This factory-assembled unit meets...09210311- SKU:
- 09210311
- Availability:
- Ships Same Business Day
- Weight:
- 9.80 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$768.95 -
HOT RODS Crankshaft Kit CBK0071
HOT RODS
$927.95The HOT RODS Crankshaft Kit CBK0071 delivers factory-matched performance in a complete, ready-to-install assembly—eliminating the guesswork of sourcing individual components and risking compatibility issues. Built to meet or exceed OEM specifications,...09210319- SKU:
- 09210319
- Availability:
- Ships Same Business Day
- Weight:
- 10.41 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$927.95 -
HOT RODS Crankshaft Kit CBK0072
HOT RODS
$595.95If you're building a high-displacement engine or restoring a classic with modern performance expectations, the HOT RODS Crankshaft Kit CBK0072 delivers the durability and precision needed to handle sustained power. This factory-assembled complete...09210320- SKU:
- 09210320
- Availability:
- Ships Same Business Day
- Weight:
- 15.30 LBS
- TYPE:
- OEM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$595.95Qty in Cart: 0Quantity:Price:$595.95Subtotal: -
HOT RODS Crankshaft Kit CBK0073
HOT RODS
$622.95A stroker crankshaft assembly fundamentally increases your engine's displacement and torque output, delivering the bottom-end power gains serious builders demand. The HOT RODS CBK0073 arrives factory-assembled to OEM specifications and ready for...09210321- SKU:
- 09210321
- Availability:
- Ships Same Business Day
- Weight:
- 6.20 LBS
- TYPE:
- OEM
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
$622.95 -
HOT RODS Crankshaft Kit CBK0074
HOT RODS
$622.95If you're building a high-performance engine or restoring a race-proven platform, the HOT RODS Crankshaft Kit CBK0074 delivers the reliability and precision you need to maximize displacement and power output. Factory-assembled and validated to meet or...09210322- SKU:
- 09210322
- Availability:
- Ships Same Business Day
- Weight:
- 9.45 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$622.95 -
HOT RODS Crankshaft Kit CBK0077
HOT RODS
$502.95If you're building a high-performance engine or pushing your current setup to the limit, a quality crankshaft assembly is non-negotiable. The HOT RODS Crankshaft Kit CBK0077 delivers factory-spec precision with performance credentials that meet or exceed...09210325- SKU:
- 09210325
- Availability:
- Ships Same Business Day
- Weight:
- 8.50 LBS
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- UNITS:
- KIT
$502.95 -
HOT RODS Crankshaft Kit CBK0078
HOT RODS
$595.95If you're building a high-performance engine or restoring a classic with serious power ambitions, the HOT RODS Crankshaft Kit CBK0078 delivers the reliability and performance you need without compromise. This factory-assembled crankshaft meets or exceeds...09210326- SKU:
- 09210326
- Availability:
- Ships Same Business Day
- Weight:
- 12.45 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$595.95 -
HOT RODS Crankshaft Kit CBK0079
HOT RODS
$595.95If you're building a high-displacement or stroker engine, the HOT RODS Crankshaft Kit CBK0079 delivers the durability and precision you need to handle increased displacement and power demands. This complete crankshaft assembly arrives factory-assembled...09210327- SKU:
- 09210327
- Availability:
- Ships Same Business Day
- Weight:
- 12.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$595.95 -
HOT RODS Crankshaft Kit CBK0135
HOT RODS
$595.95If you're building a high-performance engine or rebuilding after a failure, the HOT RODS Crankshaft Kit CBK0135 delivers the reliability and precision you need without compromise. This factory-assembled unit meets or exceeds OEM specifications, giving...09210367- SKU:
- 09210367
- Availability:
- Ships Same Business Day
- Weight:
- 11.90 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
- UNITS:
- KIT
$595.95 -
HOT RODS Crankshaft Kit CBK0138
HOT RODS
$768.95If you're building a high-performance engine or restoring a classic with modern reliability, the HOT RODS Crankshaft Kit CBK0138 delivers the durability and precision you need to handle increased displacement and power demands. This factory-assembled...09210368- SKU:
- 09210368
- Availability:
- Ships Same Business Day
- Weight:
- 13.20 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- UNITS:
- KIT
$768.95 -
HOT RODS Crankshaft Kit CBK0139
HOT RODS
$768.95If you're building a high-performance engine or restoring a classic with upgraded displacement, the HOT RODS Crankshaft Kit CBK0139 delivers the durability and precision you need for reliable power. This factory-assembled stroker crank assembly is...09210369- SKU:
- 09210369
- Availability:
- Ships Same Business Day
- Weight:
- 10.85 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- UNITS:
- KIT
$768.95 -
HOT RODS Crankshaft Kit CBK0141
HOT RODS
$874.95If you're building a high-performance engine or restoring a classic, a quality crankshaft assembly is non-negotiable—it's the foundation of reliable power delivery and durability under load. The HOT RODS Crankshaft Kit CBK0141 arrives factory-assembled...09210370- SKU:
- 09210370
- Availability:
- Ships Same Business Day
- Weight:
- 12.75 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$874.95Qty in Cart: 0Quantity:Price:$874.95Subtotal: -
HOT RODS Crankshaft Kit CBK0159
HOT RODS
$679.95If you're building a high-performance engine or rebuilding your existing one, the HOT RODS Crankshaft Kit CBK0159 delivers the reliability and durability you need without compromise. This factory-assembled crankshaft meets or exceeds OEM specifications...09210381- SKU:
- 09210381
- Availability:
- Ships Same Business Day
- Weight:
- 13.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
$679.95 -
HOT RODS Crankshaft Kit CBK0165
HOT RODS
$980.95If you're building a high-performance engine or pushing your current setup beyond factory limits, a quality crankshaft assembly is non-negotiable. The HOT RODS Crankshaft Kit CBK0165 delivers factory-matched precision with the durability to handle...09210386- SKU:
- 09210386
- Availability:
- Ships Same Business Day
- Weight:
- 13.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$980.95
