Corsa Active Valved Exhaust Systems are designed to be the perfect upgrade to your vehicle's exhaust system. The cat-back systems produce a "Sport-to-Xtreme" sound level, and the axle-back systems produce a "Touring-to-Sport" sound level, providing you the with sound you want from your Ford Mustang. The "active" sound progression maintains a quiet start and amplifies the sound throughout the gear range. Corsa's patented RSC Technology eliminates any drone when cruising down the freeway. These bolt-on exhaust systems are constructed from premium stainless steel with a choice of polished, black or gunmetal PVD tip finish for superior durability and long-lasting good looks.