Yoshimura RS-3 Oval Bolt-On - Polished Stainless , Finish: Polished 1115455 Slip-On style with 20-gauge 304L polished stainless steel tapered mid-pipe easily attaches to the O.E.M. header pipe Bolt-On style bolts to the existing O.E.M. tailpipe exhaust flange Usually, no jetting or re-programming is required and installation is a snap