bilstein?...that's 4 wheel stuff iddnit?
Bilstein used to make motorcycle shocks, but quit in the 80s (?). Bilstein, Koni (now Icon), and Girling used to be the most popular alternatives to the screen door closers that Japanese manufacturers would install on the rear of their bikes. A couple of years ago Bilstein announced that they were getting back into the motorcycle business, and the first bike was going to be the BMW S1000 RR. I don't know if this happened.