The Combat 4-1/2" slip-on mufflers are produced with some of the highest quality components and are built from their superior manufacturing. The finish product that is presented to you deliver the ideal sound and performance. The mufflers are equipped with a baffle for you to expect increased horsepower and a unique throttle response. Ultimate quality provided by exceptional engineering, superior manufacturing, and uniquely stylish features Delivers increasing power and a perfectly crisp throttle response Freedom Performance slip-ons deliver the perfect sound and performance With exceptional engineering, superior manufacturing, stylish finishes and end tips, you will get the best in quality and performance that your money can buy Multiple unique and stylish options 2-1/2" Louvered to 3" Freedom Performance Bandit performance baffles create a deep throaty sound No matter which slip-ons you choose, you'll get increased power and a unique crisp throttle response For the best power match up available, take a look at the Freedom standard true duals, sold separately