Arrow 71734XKI X-Kone Nichrom Slip-On Muffler w/Carbon End Cap for Kawasaki ZX-6R 09-16/ZX-6R 636 13-16Arrow X Kone Slip On Exhaust Kawasaki Ninja ZX 6R ZX 636 The Arrow X Kone was originally developed for racing use on the Arrow Competition Exhaust System, now that same race track pedigree is available as a slip on exhaust. The tapper shape of the Arrow X Kone was developed in conjunction with the WSBK Alstare Suzuki Team to be compact, aerodynamic and to perform under race conditions. The muffler sleeve is made from a special blend of nickel and