Specifically for HK-50 series outrunner motors in RC builds, this C-clip kit supplies axial retention to keep the endbell and rotating components located correctly under load and while servicing the motor.
Use these clips only on shafts with a machined groove intended for snap-fit retention; they serve as low-profile axial retainers rather than bearings or spacers. To fit, remove the endbell, place the clip into the shaft groove to restore axial restraint, refit the endbell, and check the shaft for smooth, play-free rotation.
Consistent installation and routine checks reduce axial drift that can affect gear engagement and bearing life in RC setups.
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