The PERRIN Performance catback exhaust for your 2013 FR-S or BRZ is one of the best and first modifications you should do to your car, gain horsepower and unleash that aggressive sound. Made from 3″ 304ss tubing for maximum exhaust flow and extreme durability. The PERRIN Performance catback exhaust features a direct bolt on installation to the OEM front pipe and aftermarket front pipes with no “neck down”. This is followed by an intermediate V-band connection that allows fine tuning of the exhaust alignment and provides an air tight seal. Finishing off the PERRIN catback is a straight through muffler and two 4″ slash cut tips, one on each side.