M4 GP2 Black Ceramic Slip-On w.Catalytic Converter Eliminator Exhaust for '15-'20 Yamaha R1/R1M | YA9922GP-CE
All Black Catalytic Converter Eliminator with the Black GP2 Canister is a sweet look for the new R1. This set up saves 12 lbs over stock and greatly improves performance.\
NOTE: M4 Recommends re-flashing your stock ECU to unleash the full potential of all M4 products on the 2015 Yamaha R1.