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" Mufflers feature 16-gauge steel construction Straight can-style muffler bodies to be used with choice of optional billet end caps (sold separately) Works with these end caps Black Bevel ZZ37903, Polished Slash ZZ37904, Black Slash ZZ37905, Polished Fluted ZZ37906 Distinctive aggressive exhaust sound Improve power and performance Included Items: (2) Mufflers 2.5" x 23", (4) 5/16 x 3/4" Hex bolts, (4) 5/16" Lock washers, (1) Instructions