Invidia R400 70mm Cat Back Exhaust w/ Titanium Tips (86/BRZ)Fitment Guide: 86 BRZ, 12 21 Description Invidia R400 tuned muffler exhaust systems offers a rich exhaust note which enhances the natural tone of your car's engine. Invidia's high flow design ensures efficient exhaust flow for optimum engine performance. Specifically designed to fill the sound gap between the Q300 and N1 system. The R400 produces a unique, aggressive note without any harsh cabin noise (particularly at highway speeds). BUY WITH