The Mac's Wedge is truly universal. Constructed from mandrel-bent steel tubing, this chock will handle virtually all motorcycle tires. Due to its unique "wedge shaped" (patent pending) design, the narrower the tire, the further into the chock it sits. The bike sits on top of a base plate when secured for ultimate stability. In addition, the Mac's Wedge can be integrated with our VersaTie track by the use of a spreader bar allowing the chock to be adjusted front to rear in the trailer in 1" increments. VersaTie track, fittings and Mac's spreader bar sold separately.