Unleash the power of your OBS GMC Sierra with our performance exhaust systems. Engineered to provide a significant boost in horsepower and torque, these systems enhance your truck's performance while delivering a deep, aggressive sound that commands attention. Made from high-quality stainless steel, our exhaust systems are built to withstand the elements and resist rust. Easy to install, they come with all necessary hardware. Experience improved fuel efficiency and a more exhilarating driving experience. Upgrade your exhaust system and feel the difference on every drive!