Outrunner 8mm Motor Shaft Replacement Kit - Scorpion SPHK4035MSK8  [SPHK4035MSK8]

8mm Outrunner Shaft Replacement

This Scorpion SPHK4035MSK8 shaft kit is an RC-scale replacement part designed for outrunner brushless motors that use an 8mm shaft. It is intended as a direct swap when the original shaft shows wear, scalloping from collars, or minor damage that impairs runout and balance.

Fit this kit during regular motor service or mid-level rebuilds to restore alignment between rotor and stator and to provide a secure mounting for pinions or other driveline interfaces common on outrunner designs. Confirm your motor is an outrunner and that the shaft interface measures 8mm before ordering.

Installation notes: inspect bearings and bearing seats for wear before installing the replacement shaft, ensure the shaft seats squarely in the rotor and bearing bores, and verify axial play and runout after assembly. Tighten retaining hardware to an appropriate torque for model-scale components and perform a static balance check prior to dynamic testing.