I've always loved the swingarm on the Ducati Supersport 1000DS. It's beefier and way better looking. It flows much better with the newer Supersport than the older squared-off swingarm that was carried over from the older Supersport. These nicer swingarms are very expensive new, and they don't come up for sale used very often, but I was lucky enough to pick up a used one about a year ago and I just got around to installing it today. I also installed a new 41-tooth rear sprocket to replace the 43-tooth that I've had on the bike for a while. The bike lost a little bit of "umph" on acceleration, but I'm hoping the new gearing will be better for my track days and give me a little more speed on the straights.