OMA-2820-950 Motor Security Ring Compatible - O.S. Engine OS74004071  [OS74004071]

Retention ring for OMA-2820-950 brushless units

This security ring is a scale RC accessory crafted for OMA-2820-950 brushless motors, offering a defined retention surface for the motor endbell and shaft. It is made to engage the motor's factory features and reduce axial movement when the motor is under load, which helps keep gear mesh steady.

Installation is a simple bench procedure: slide the ring onto the endbell so it rests against the factory locating points, then fasten using the motor's original screws or the vehicle's mount as applicable. No specialist tools are needed and the part matches common endbell dimensions found on brushless motors.

For setup and tuning the ring is a practical addition: by stabilising the motor assembly it assists in preserving pinion-to-spur engagement and lowers the risk of intermittent contact during high-speed runs or on uneven terrain. It appeals to builders seeking predictable mechanical retention without modifying motor electronics or mounting hardware.