The bearings used in Cobra Motors are designed to run smoothly for a long time, but occasionally, in a crash, you can damage them. For those occasions, we offer replacement bearings for all of the Cobra Motors.
This kit contains a pair of original equipment replacement bearings for the Cobra C-2221 Airplane Series motors. The inner bearing measures 4mm ID x 8mm OD x 3mm thick, and the outer bearing measures 4mm ID x 11 OD x 4mm thick. These bearings are exact replacements for the bearings that come in the Cobra C-2221 motors.