I hadn't noticed this... Must be some ploy by riders of the 1300's...WW
Not too many out there with stock exhaust on their 1800's, mine is the only one I know of. Just a few "drilled out" ones out there, it seems that if you feel the need to drill, you'll probably be getting a new set of pipes soon. Odds are, that is.
My 1800 still has stock pipes. It's sad. But I don't have the money to get new ones yet. So.... I will have to wisper past the slower bikes on the road for now.