Akrapovic Yamaha YZF-R1 2015-2016 Slip-On Line (Titanium) Exhaust Oval-shaped or hexagonal-shaped canister with your choice of carbon-fiber or titanium outer sleeve Hexagonal mufflers feature a carbon-fiber outlet cap to match the design of each bike Outlet cap, perforated inner sleeve and inlet cap are all made of titanium Joint of the inlet cap is milled on a state-of-the-art CNC machine and connected by high-quality silicon-shielded tempered springs Include a lightweight, compact and high-temperature-resistant carbon fiber muffler clamp