I've seen that Touratech and Hyperpro, and probably others, have a variety of lengths of springs in 20mm, 35mm, and 50mm shorter than stock. I also assume that Touratech and Wunderlich are selling stuff made by others. What I'm NOT finding is a slightly higher spring rate. In full gear, I weigh over 240lbs, so a slightly heavier spring seems to be in order, especially on the forks, but it looks lke all the aftermarket stuff is the stock spring rate. But also, since my crash just over a year ago, I have somewhat limited use of my left leg, particularly below the knee. I normally only put the left down at signal lights, and my tip-toes just don't have the strength like before, so I'd like to go 20mm lower to get it a little more firmly planted.