I put a set of the smaller bags (Scout) on my 2004 a few months ago, which the guys over there say are sized best for the TW. I haven't ridden much off road with them yet, but like them so far for commuting and grocery store runs. They have obviously been used for some time on other bikes and seem to stay in place nicely. I'm thinking of installing a Yamaha rear rack to complement the setup though I've used a Cycleracks in the past.