About 3 months ago the wife and I test rode a RM. Really don't need a bike that big anymore and I really like the looks of my W/C Vintage. But the physical ride of the RM was just excellent!! I told her I had read you can put the RM shock on our Vintage. Now my wife doesn't insist on much with a bike--a backrest and floorboards are all, and they have to be on before I bring it home. But she insisted on the air shock. Who am I to argue? I started looking for a used one, no rush to find one. Finally found one for a price I was willing to pay-$218 delivered off a RM. Gotta say it's nice. Not that much different solo, the stock shock was set well for me. But 2 up is much better. No more "jolting" bumps that go right up your spine(old spines at that). Seem to feel the road better but the whole ride is just smoothed out way better.