Yoshimura RS-5 Polished Stainless Steel Slip-On Exhaust System - Honda CBR600RR 2009-2011 Trapezoidal shape Cone Carbon Fiber Tip 3 muffler options: stainless, titanium, carbon fiber Low-volume insert capable Slip-On style with 20-gauge 304L polished stainless steel tapered mid-pipe easily attaches to the O.E.M. header pipe