Designed and built with painstaking care and attention to detail, Two Brothers Racing is proud to release our M-2 Slip-on exhaust system for the 2007 Honda CBR600, available with either aluminum, titanium or high-temp carbon fiber canisters. Two Brothers V.A.L.E. polished stainless steel connector tube for the CBR600RR that allows the use of a full length muffler for maximum power and great sound.