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Borla Boomer Mufflers are full-blown, high-tech, dyno and race-proven mufflers for the street or track. These eye-popping, fully polished mufflers utilize Borla's patented race-winning technology. They boost your vehicle's horsepower from 7% up to 10% while adding head-turning sound. They are available in a variety of universal-fit styles. Borla Boomer Mufflers are made of aircraft-quality T-304 stainless steel and backed by a Million Mile Warranty.