Bassani has been taking care of various motorcycle applications throughout the years and it would not be any surprise they now offer 4" slip-ons for the H-D baggers. These 4" slip-ons pack a punch with their throaty rumble that is not ear piercing as some mufflers could be. These slip-on mufflers equip to your stock headers for a simple install and will have your bike looking unique and sleek. 4" Black Megaphone Muffler with Bassani standard 21/4" Baffle providing maximum performance Includes a New Style Billet Black End Cap with Black Inner and internal machined flutes.