This is a direct bolt on Fatty tire kit for you Ruckus GET (49cc) motor. The kit includes a bolt on motor mount and shock mount, the mount has 3 different stretch arms to choose from, with a maximum stretch of 11". The kit also includes a 10x8 rear polished wheel with a 140/90-10 mounted tire, a longer rear brake cable, fuel hose line, throttle cable and a 4/137 hub. The hub is a 137 bolt pattern with 10mm studs pressed into the hub. No need to drill and elongate the holes in the rim, like other hubs require.