Fitment Information Infiniti Q60 3.7L RWD (2014 2015 2016 2017 2018 2019 2020 2021 2022) 3.7L Engine only Will not fit any other model or engine This will not work with a Nismo Model Catback Exhaust OEM or Aftermarket. Emissions Compliance This is a Y-Pipe and does not alter, replace, or modify any emissions equipment.   Specs & Features 2.5" piping steps to 3" This will not work with a Nismo Model Catback Exhaust OEM or Aftermarket. What's included? 1x Exhaust Y-Pipe 2x 2.75” 2 bolt exhaust gaskets 1x 3” 2 bolt exhaust gaskets 6x nuts 6x bolts   The ISR Performance 370z / G37 Y-pipe utilizes 2.75" stainless steel piping along with bellowed flex sections running from the 2 bolt catalytic converter flanges back to the high performance velocity merge. The Y pipe then steps to 3" stainless piping coming out of the velocity merge to the rear 3" exhaust flange. The Y pipe also features an integrated dimpled gusset plate tying the two individual runners together for increased strength and rigidity.The ISR Performance Y pipe was designed to provide the best possible exhaust tone, ground clearance, and performance, all at an affordable price!