For the extremist who wants to take their truck to the next level, this dual bolt - on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains. You can expect to experience gains on average of 15 - 20 horsepower. Gibson muffler provides a mean performance sound and complemented with polished Stainless Tip. Easy bolt - on installation. No welding required. Backed by a Lifetime Limited Warranty. If you want Extreme, this system is it.