M4 Stainless Steel Full System Exhaust with Polished SS Muffler – Yamaha R3 / MT-03

*All M4 exhaust system purchases will include a free fuel map for either Bazzaz Z-Fi or Power Commander PCV that has been developed for this exhaust through countless hours of dyno testing and racing.

M4 has gone to great lengths to make sure their full system exhaust for the R3 is better than the competition.  They are confident this system will give you the most power possible from any aftermarket exhaust system available.

The M4 full system exhaust includes an M4 lightweight exhaust hanger bracket or you can still use the OEM passenger foot peg assembly. The M4 full system with polished stainless steel canister produces 10% more horsepower than the stock system and weighs 10.5 lbs less.

Available dB reducing muffler inserts: Stage 1 part # Q8 (Installed), Stage 2 part # Q6