M4 YA9944 STREET SLAYER CARBON CF 3/4 CAT DELETE EXHAUST YZF-R1 R1 R1M 15-20

Street Slayer slip on system with catalytic converter eliminator and carbon MC36 muffler

The ultimate slip on for the new R1. All titanium tubing to eliminate the catalytic converter with M4’s MC36 style carbon canister. Removes 14.5 lbs over stock and produces a wicked exhaust note.

Available dB reducing muffler inserts: Stage 1 part# Q7 (sold separate)

NOTE: This system may drag during track use at heavy lean angle.

NOTE: M4 Recommends re-flashing your stock ECU to unleash the full potential of all M4 products on the 2015 Yamaha R1.