The ProTrack comes in three sizes: 60-inch, 57-inch, and 53.75-inch. Each is designed to fit different width truck beds. Before deciding which one is the proper size for your truck, van, or trailer, you will definitely want to measure it. CCR Sport lists the 60-inch as designed for most full-size trucks including the Ford F-150, F-250, and F-350; Chevrolet Silverado; and GMC Sierra 1500, 2500, and 3500; Dodge Ram 1500, 2500, and 3500; Nissan Titan; and Toyota Tundra. The midsize 57-inch is intended for use in most Dodge Dakota and Toyota Tacoma models, and some Ford F-150 trucks. The compact size 53.75-inch (as tested here) is designed for use in most Ford Ranger, Chevrolet S-10, Chevrolet Colorado, and Nissan Frontier applications.