There have been several threads on this in the past.. try doing a search Here is a commercial version http://2x2cycles.com/products/bicycle-rack/ and a thread http://advrider.com/forums/showthread.php?t=680785&highlight=bicycle There are more threads out there. edit: another thread http://advrider.com/forums/showthread.php?t=829069&highlight=bicycle review of the above linked 2x2 mount.