Custom High Pipe Scrambler Harley Chopper Bobber Softail Dyna FXR Evo Big Twin . 2 into 1 Knievel choppers . Had two of these built for their Scrambler model. Fit Evo twin cam...For custom applications. This is probably not a bolt on item . Compare sizes to your bike before buying . Only made 2 of these that we're aware of.