The easiest and least expensive way to experience Yoshimura performance is with our Slip-On/Bolt-On lines. * 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