The OEM FR-S over pipe / front pipe is a one piece unit that is restrictive and difficult to work around. Agency Power has designed a two piece system that allows more exhaust flow, is simple to install, and can be used with either aftermarket headers and catback or with the OEM system. These 304 stainless exhaust pieces are mandrel bent, TIG welded and given a satin finish. The 2.5" piping is an increase over the factory system without being too large, which would reduce back pressure and decrease power. The Agency Power developed mid pipes are a perfect blend of form and function which will be at home on your FR-S!