The Freedom Performance Racing Slip-Ons are the perfect way for you to increase sound, performance, and style to your bike. The Racing Slip-ons system features superior manufacturing and quality you would expect. The system is equipped with 4" mufflers with racing slash end caps that have side cuts within the cap which can also be positioned up or down for whatever style you are going for. 4" muffler body 4" racing slash with side cuts end caps Drag strip rumble End cap can be rotated to up or down angle Removable baffles Stainless steel hardware for strength and rust resistance 1-year manufacturer's warranty