LOC PRO Motor Retainers are CNC machined aluminum and anodized. They are installed onto aft of motor tube with JB Weld and allow an easy insertion and extraction of the motor, while keeping it in its place along the flight.

The LOC PRO motor retainer MR-38 has an internal diameter of 41.4 mm that will fit on the motor tube. These are specifically manufactured to fit LOC motor tubes. They also may work with other manufacturer motor tubes.