Marson Low Profile E-track Chock Motorcycle Wheel Chocks - Designed for Sport Bikes Mfg USA This listing includes one wheel chock, one etrack mounting plate, and the hardware. E track sold separately. Designed for Sport Bikes - works for any bike with a tire 120mm wide or smaller. Allows for lateral 2" adjustment along the e track. Mounting plate can be changed to rear of chock. Dimensions: Exactly 4-7/8" wide inside x 14" long x 9" high Constructed of 1" heavy duty steel tubing. High quality black powder coated for a sharp appearance.