I've gone through a few sets of aftermarket mirrors, the stock ones were short and stubby, but they vibrated much less at speed. I've used my S to commute quite a bit, and well, even at slow speeds, I have to hold the clutch in for my mirrors to be useful. Stock were probably somewhat usable up to interstate speeds at least. Does anyone else really use the mirrors on the street? Everything's stock on my bike, btw.