Akrapovič for the #Yamaha #R3 / #MT03 is constructed from high-grade stainless steel and combination of racing materials like carbon fibre for the muffler outer sleeve and for the end cap. It provides a perfect throttle response and increased power, allied to a deep, racing tone – totally in-sync with its Grand Prix origins to deliver a sound as good as it looks. _ _ _ _ Emission notice: http://emission.akrapovic.com This Racing Line (Carbon) does not meet emission compliance requirements for street or highway use.