Arrow 71152CKZ Competition Evo Stainless Steel Exhaust System w/Race-Tech Titanium Muffler for Yamaha YZF R1 15-16Product Descriptions Arrow's 71152CKZ Competition "EVO" Full Exhaust System, Titanium with Carbon End Cap Steel Collecter is made specifically for Yamaha YZF R1 (2015 2016). Competition exhausts are designed and developed specially for bikes and engines tuned for races, on the basis of the experience made in track races all over the World: these exhausts are a direct evolution of the ones used in SBK and SS bikes. Competition exhausts are made with