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Pit Bike YX140 Race Crankshaft



  • YX140 GEN 4
  • YX140 GEN 3 (SEE NOTES)
  • Z140 GEN 3 (SEE NOTES)


Please Note:

  • This is a direct fit with no shimming parts required.
  • This increases the engine capacity making it 145cc. 59mm Stroke
  • If fitting to GEN 3 style engines you may need to exstend the oil feed gallery inside the clutch casing to ensure it locates into the end of the crankshaft to ensure it gets the correct supply of oil. Failure to do this will wear the crankshaft alot faster.
  • This is a performance enhancing product and damage may occur.



  • Bearing O.D fitted = 52mm
  • Gear Teeth = 16

Item Includes:

  • 1x Crankshaft with bearings fitted and con rod.


YX140 Race Crankshaft - 145cc

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