There have been many Harley-Davidson models with the Softail frame, including the Softail Standard, Custom, Springer Softail, Heritage Softail, Heritage Springer, Night Train, Deluxe, Deuce, Fat Boy, Softail Slim, the Dark Custom Cross Bones, the Dark Custom Blackline and Breakout. With the exception of the Deuce, which has a 2 in (51 mm) longer backbone, these motorcycles have the same engines, transmissions, and frames, differing mainly in the fork, wheels, and accessories.