The ISR Performance ST Series Exhaust for Nissan 370Z is a Y-Pipe Back exhaust system that utilizes a Stainless steel 2 bolt 3 flange that splits into 2 2.5 pipes with bottle style resonators and continues back to an aggressive muffler section with 4” tips. This exhaust gives your car not only a great look but a deep tone that every enthusiast is looking for. Our ISR 370Z ST Exhaust is designed to bolt directly to the vehicles stock Y- pipes replacing the mid-pipe and factory rear muffler.