I'll do the measurement withing 3 hours for you. Not at the garage atmHi, I've been looking every where to find out this info.
I was going to buy a short exhaust off of Ebay, but I'm not sure it will fit. I asked the seller for his opinion and they are asking me if the R3 has a 1.50 pipe.. So I'm new to motorcycles in general, and I'm guessing they are referring to the diameter of the pipe that extends out of the muffler box on this bike?
Do any of you know the diameter of this pipe?