HK-2216 Outrunner Motor Shaft SPHK-2216MSK, 4mm Main with 3.17mm Output by Scorpion  [SPHK-2216MSK]

Shaft replacement compatible with HK-2216

This kit provides a direct replacement shaft for HK-2216 series outrunner motors found in electric RC vehicles. The supplied shaft transmits rotor rotation to the pinion or output coupling and restores alignment when the factory shaft is damaged or bent.

The design is focused on correct fit and reliable operation rather than delivering any additional performance. The 4mm main shaft and 3.17mm output end adhere to HK-2216 series interface dimensions to secure proper seating with rotor and pinion components. Inspect bearings and motor faces before refitting, since a new shaft will not cure worn bearing issues.

Use this kit during motor rebuilds after significant use or when shaft runout is affecting throttle smoothness. Follow normal disassembly and reassembly routines, check axial and radial clearances after fitting, and carry out a bench spin to ensure smooth rotation before refitting the motor into the model.