The GPM MOT0420 is specified as an aftermarket motor for the Associated RC 18T platform, supplied as a single replacement unit for 1/18 scale models. Key data points listed are Roadtech bearings, a 0.4m diameter reference, 20 Turns and an operating voltage band of 4.8v to 8.4v, which defines the compatible ESC and battery envelope.
From an installation and tuning perspective the unit is intended as a direct-fit option where motor mounts and dimensions match the stock location on the Associated RC 18T chassis. Installers should confirm shaft position, pinion mesh with the spur gear and choose a pinion and ESC rated for the 4.8v to 8.4v range to achieve the desired torque versus speed trade-off.
The description remains focused on fitment and specification rather than performance guarantees. Use MOT0420 for replacement duties or to evaluate different turn counts and bearing configurations; outcomes will be determined by battery choice, gear ratio and the entire driveline.
Use this motor for direct replacement or controlled tuning tests on Associated RC 18T platforms, verifying mounts and gearing to match the 4.8v to 8.4v electrical specification.