Scorpion SPHK4035MSK8 8mm Shaft for RC Outrunner Motor Repair  [SPHK4035MSK8]

Replacement Shaft for Outrunner Motors

The Scorpion SPHK4035MSK8 shaft kit is a replacement component for RC outrunner brushless motors that accept an 8mm shaft. Use it when the original shaft shows signs of wear, collar damage, or any fault that alters rotor runout and balance.

Apply this kit during scheduled maintenance or when performing a mid-level rebuild to realign the rotor and stator and to ensure a stable fit for pinions and other driveline parts typical of outrunner designs. Always check that your motor is an outrunner and that the shaft interface is 8mm before buying.

Installation advice: examine bearings and bearing seats for wear prior to fitting, make sure the shaft sits square in the rotor and bearing bores, and check axial movement and runout after assembly. Secure retaining screws to suitable torque and carry out a static balance check before running at speed.