i have a honda cbr 600rr 05 and i was looking for a two brother exhaust and i was trying to find out wat is the difference of the m2 and the m5 but could not find it if you can help me out that would be great.

 

I got the m2 vale to my RRbut when I asked the seller he told me that the m5 is a more wider version of the m2 vale and he advised that m2 suits better to RR tail.

 

me too i have the m2 vale on my 07RR. I hear that alot of people with the 1000RR usually go with the M5. By the way if your gonna go with a two bros put a power commander on also. Not putting on a power commander on is like walking out the house with one shoe on