Fitment Information Nissan 370Z (2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020) Fits 370Z Coupe and Convertible Roadster Emissions Compliance This is a y-pipe back catback exhaust and does not alter, replace, or modify any emissions equipment. Specs & Features 2 2.5" pipes with bottle style resonators Two aggressive mufflers with 4” tips Direct bolt on Gasket and hardware included  What's Included? 1x resonator section 2x Muffle Section W/4’’ tips 3x 2 bolt 2.5” gaskets 6x Bolt 6x nuts   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.