Invidia 2015+ Subaru WRX/STI R400 Quad Titanium
Invidia Subaru WRX/STI******2021 R400 Quad Titanium Tip Cat-Back Exhaust. Pickup only. This system just came off my new 2020 sti - it is louder than stock and not to my taste. DIY or get it professionally installed with 4 seals and a couple of new hangers. Description: Specifically designed to fill the sound gap between the Q300 and N1 system, the R400 produces a unique, aggressive note while minimising harsh cabin noise (particularly at highway speeds). The Invidia R400 tuned muffler exhaust