32001-SB2 Rush Racing 4 inch Big Louie Slip On Mufflers Fits 2010 to 2016 Harley Davidson Touring Models 4'' with one 3" baffle and one 2.5" baffle These mufflers have been engineered through thousands of hours of development, real world application and independently dyno tested in order to guarantee you the best performance and sound in the market RUSH mufflers will give you up to a 5 horsepower increase straight out of the box Chrome 4" Mufflers Slash Down State of the art chroming process allows RUSH to offer a 1-year-limited warranty against manufacturers defects on RUSH chrome products