Yoshimura RS-3 Oval Race Polished Stainless Slip-On Exhaust for 2013 Honda CB11 - One Size 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 Stainless Mid Pipe