10118107 (mid-pipe resonator) An aggressive but controlled exhaust system for the Scion FR-S & Subaru BRZ is theRevolution RS. It features full 3” diameter piping for superior performance. Perfect for vehicles with forced-induction, like turbos, but it also includes a large mid-pipe resonator to help remove unwanted drone from the passenger compartment. The purposeful single-sided cat-back layout exits the right side of the vehicle and produces an effective but light-weight system. Like all GReddy Revolution RS systems the fully hand-welded 304 Stainless-Steel exhaust carries a Limited Lifetime Warranty.