Our most aggressive exhaust system we offer for the 2017-2021 Toyota 86 & Subaru BRZ is the Revolution RS. It features a full 3” diameter piping for superior performance. The purposeful single-sided cat-back layout exits the right side of the vehicle and produces an effective but light-weight system. The extra-large GReddy resonator controls the unwanted drone. Like all GReddy Revolution RS systems, the fully hand-welded 304 Stainless-Steel exhaust carries a limited lifetime warranty