Greddy RS-Race Cat Back Exhaust - 2015-2021 Subaru WRX / STI PDM_fixed-back-seats Ethanol at the pump is

Ethanol at the pump is never consistent

Depending on the application

giving the external wastegate full control

Direct replacement for 2015 models

Greddy RS-Race Cat Back Exhaust - 2015-2021 Subaru WRX / STI PDM_fixed-back-seats Ethanol at the pump isNOTE: ETA for this item is 120 days. Greddy RS Race Subaru WRXSTI Sedan 15+ RallySport Direct is proud to carry pioneering performance products brought to you by Greddy. Here, you are looking at the Greddy RS Race Exhaust System. Greddy designed this exhaust system with weight savings in mind, along with stainless steel construction with smooth bends and larger piping diameter. The result is more power and performance along with an aggressive sound.