Stockton 5.5 Trailer Wheel Chock The Stockton Motorcycle Trailer Wheel Chock is a high-quality trailer wheel chock without the ridiculous price. This wheel chock has a 5.5 opening. The overall length is 11 with an 8.25 height. Constructed from steel tubing, this motorcycle wheel chock has a key-holed base plate and comes with the inserts for mounting to the floor of your wooden trailer. This design allows you to easily move the wheel chock by loosening the 4 screws when not in use. Features: Dimensions: 11 L x 8.25 H Works for a variety of motorcycles with a maximum 5.5 tire width Steel construction Key-holed base plate Mounting hardware is included