Apologies if this has been posted elsewhere, but I've just got an email from Race Tech with this news about suspension products for BMW bikes, including the GS and X-Challenge:
http://www.racetech.com/emaillist/news/RTnews-100127bmw.html
Malc
http://www.racetech.com/emaillist/news/RTnews-100127bmw.html
Malc