O.S. Engine OS74004071 - Security Retaining Ring for OMA-2820-950 Brushless Motor  [OS74004071]

Motor endbell security for OMA-2820-950

Designed as an RC-scale retention accessory, this security ring mates with OMA-2820-950 brushless motors to give a secure seating point for the motor endbell and shaft. It engages with the motor's existing mounting features to help limit axial shift under load and support consistent pinion-to-spur engagement.

Fitting the ring is a quick workshop task: locate the ring on the endbell so it bears against the factory features, then fasten using the motor's original screws or the vehicle motor mount as needed. No specialised tools are normally required and the component is sized to fit typical brushless motor endbell profiles.

When tuning, the security ring is a modest but effective upgrade: stabilising the motor helps maintain gear mesh and reduces the chance of intermittent contact during fast runs or on rough surfaces. It is well suited to builders who want mechanical stability without changing motor electronics or mounting parts.