I've seen and used these guys on some friends' KTM's and would like to install on my GS. Over the run of a day, especially if it is warm outside, the front suspension does become noticeably less supple. So the theory is that as the air inside your 'air gap' warms up from repeated compression and external warming, it tries to expand but it has nowhere to go so it increases in pressure. Now your 'air gap' is pressurized decreases the damping that a non-pressurized 'air gap' affords - thus the stiff suspenders. The fork caps are easy enough to take off with a 13mm cone wrench but they do have a plastic bit between the alloy of the fork cap and the spring. Presumably this piece of plastic acts as a bushing between the two surfaces. So, in order to do the install, one needs: 1. The right fork bleeder valves 2. A hole tapped in the fork cap in the right spot The bleeder valve is easy, with KTM making a nice valve as pictured below. The question I have is how to negotiate the fork cap drilling with that darned plastic spacer for optimal results. It looks simple enough, but most things do when you're simple. Anyone done this? Anyone interested? Guys with Husky TE's and BMW X-Challenge's have been using these valves but I haven't found their secret recipe write-ups. To the Bart-Lab!