What does it mean when the exhaust pipes are bigger? I was at out local Italian bike shop and there was a 999r with extensive work done to it. The salesman told me to look at the size of the pipe leading to the cans vs. the stock size. There was a huge difference between the two. I was wondering what are the benefits of have larger pipes if any. If there is why isn't the pipes for the RG3 bigger than the stock ones? Can anyone educate me on the matter. Thanks in advance.