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 Connecting Rod 8714
HOT RODS
$151.95Heavy-duty OE replacement connecting rods, Certified 8620 AISI steel provides superior strength, Crankpins are manufactured from hot-rolled ASTM 4115 and case hardened to 58-62Rc, Feature the latest in caged needle roller bearing designs for high rpm...09230515- SKU:
- 09230515
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- MATERIAL:
- 8620 STEEL
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 2-CYCLE
- FEATURES:
- INCLUDES THRUST WASHERS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- KIT
$151.95 -
HOT RODS Connecting Rod 8717
HOT RODS
$232.95Heavy-duty OE replacement connecting rods, Certified 8620 AISI steel provides superior strength, Crankpins are manufactured from hot-rolled ASTM 4115 and case hardened to 58-62Rc, Feature the latest in caged needle roller bearing designs for high rpm...09230520- SKU:
- 09230520
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- INCLUDES THRUST WASHERS
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- 8620 STEEL
$232.95 -
HOT RODS Connecting Rod 8718
HOT RODS
$159.95Heavy-duty OE replacement connecting rod, Certified 8620 AISI steel provides superior strength, Uniquely designed big end uses strategically located side scalloping vent slots to minimize high-RPM bearing race distortion, Crankpins are manufactured from...09230564- SKU:
- 09230564
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CONNECTING ROD KIT
- MATERIAL:
- 8620 STEEL
$159.95 -
HOT RODS Crank Bearings K068
HOT RODS
$133.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240235- SKU:
- 09240235
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- BALL
$133.95 -
HOT RODS Crank Bearings K007
HOT RODS
$62.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240245- SKU:
- 09240245
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- MAIN CRANKSHAFT
- UNITS:
- KIT
- TYPE:
- BALL
$62.95 -
HOT RODS Crank Bearings K070
HOT RODS
$100.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240246- SKU:
- 09240246
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- ATV
- TYPE:
- BALL
- UNITS:
- SET
- APPLICATION:
- MAIN CRANKSHAFT
$100.95 -
HOT RODS Crank Bearings K074
HOT RODS
$118.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240283- SKU:
- 09240283
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
$118.95 -
HOT RODS Crank Bearings K083
HOT RODS
$45.95Precision, high-quality main bearing and seal kits complement installation of Hot Rods crankshaft assemblies09240286- SKU:
- 09240286
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- BEARING
- TYPE:
- BALL
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$45.95 -
HOT RODS Crank Bearings K090
HOT RODS
$82.95Seal kits complement installation of Hot Rods crankshaft assemblies09240399- SKU:
- 09240399
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING SET
- RIDING STYLE:
- STREET
$82.95 -
HOT RODS Crank Bearings K091
HOT RODS
$83.95Seal kits complement installation of Hot Rods crankshaft assemblies09240400- SKU:
- 09240400
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- PRODUCT NAME:
- BEARING SET
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$83.95 -
HOT RODS Crank Bearings K092
HOT RODS
$165.95Seal kits complement installation of Hot Rods crankshaft assemblies09240401- SKU:
- 09240401
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- APPLICATION:
- MAIN CRANKSHAFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING SET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$165.95 -
HOT RODS Bottom End Kit CBK0171
HOT RODS
$835.95Kit features everything needed to complete crankshaft installation including Hot Rods main bearings and seals kit plus a complete engine gasket set that includes all gaskets and seals for a complete engine rebuild, "Stroker Kits" crankshaft assemblies...09210581- SKU:
- 09210581
- Availability:
- Ships Same Business Day
- Weight:
- 13.55 LBS
- MATERIAL:
- 4140 STEEL
- UNITS:
- KIT
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- 4-CYCLE
- TYPE:
- OE REPLACEMENT
- PRODUCT NAME:
- BOTTOM END KIT
- STROKE LENGTH METRIC:
- STANDARD
$835.95 -
HOT RODS Bottom End Kit CBK0172
HOT RODS
$741.95Kit features everything needed to complete crankshaft installation including Hot Rods main bearings and seals kit plus a complete engine gasket set that includes all gaskets and seals for a complete engine rebuild, "Stroker Kits" crankshaft assemblies...09210582- SKU:
- 09210582
- Availability:
- Ships Same Business Day
- Weight:
- 11.05 LBS
- MATERIAL:
- 4140 STEEL
- MODEL:
- 4-CYCLE
- STROKE LENGTH METRIC:
- STANDARD
- TYPE:
- OE REPLACEMENT
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BOTTOM END KIT
$741.95 -
HOT RODS Bottom End Kit CBK0194
HOT RODS
$595.95Kit features everything needed to complete crankshaft installation including Hot Rods main bearings and seals kit plus a complete engine gasket set that includes all gaskets and seals for a complete engine rebuild, "Stroker Kits" crankshaft assemblies...09210585- SKU:
- 09210585
- Availability:
- Ships Same Business Day
- Weight:
- 10.35 LBS
- MODEL:
- 4-CYCLE
- UNITS:
- KIT
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- STANDARD
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- BOTTOM END KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OE REPLACEMENT
$595.95 -
HOT RODS Crankshaft Kit CBK0003
HOT RODS
$768.95Assembly 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 rebuildable with genuine Hot Rods...09210262- SKU:
- 09210262
- 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 CBK0005
HOT RODS
$768.95Assembly 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 rebuildable with genuine Hot Rods...09210264- SKU:
- 09210264
- Availability:
- Ships Same Business Day
- Weight:
- 12.30 LBS
- TYPE:
- OEM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$768.95 -
HOT RODS Crankshaft Kit CBK0084
HOT RODS
$716.95Assembly 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 rebuildable with genuine Hot Rods...09210329- SKU:
- 09210329
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
- UNITS:
- KIT
$716.95 -
HOT RODS Crankshaft Kit CBK0085
HOT RODS
$502.95Assembly 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 rebuildable with genuine Hot Rods...09210330- SKU:
- 09210330
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$502.95 -
HOT RODS Crankshaft Kit CBK0086
HOT RODS
$716.95Assembly 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 rebuildable with genuine Hot Rods...09210331- SKU:
- 09210331
- Availability:
- Ships Same Business Day
- Weight:
- 13.30 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
- UNITS:
- KIT
$716.95 -
HOT RODS Crankshaft Kit CBK0087
HOT RODS
$716.95Assembly 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 rebuildable with genuine Hot Rods...09210332- SKU:
- 09210332
- Availability:
- Ships Same Business Day
- Weight:
- 10.51 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
- UNITS:
- KIT
$716.95
