Arrow 71898AKN Race-Tech Dark Aluminium Slip-On Muffler w/Carbon End Cap for Kawasaki ZX-6R 636 19-20Arrow Race Tech Slip On Exhaust Kawasaki ZX6R ZX636 The Arrow Race Tech exhaust features a unique, diamond shape muffler that is unlike anything else on the market. This innovative diamond shape design allows the Arrow Race Tech exhaust to have reduced dimensions compared to traditional shaped exhausts. The exhaust also features a significant weight reduction without having to compromise internal volume which would reduce the exhaust note. The