Rear motor clamp support system. This come in a 36, 40, 44 or 56mm diameter size. This can be used as added support for motor mounts that only carry the front of the motor. It helps stop stress cracks from all the weight being supported by only the front of the motor. Specs: Height adjustable by cutting lower mount Includes: 1 retaining ring, 1 bracket, screws (without motor)