Our highway motorcycle pegs are made specifically to be compatible with BMW Adventure bikes from 2013 and up, and the Harley-Davidson Pan America. They are compatible with the OEM crash bars for all water cooled R1200, R1250 GS+A models (1"/25.4MM collar). They are also compatible with the Harley-Davidson Pan America front vertical crash bar (.85"/21.6MM collar). Adjustment screws allow you to set the open angle of the pegs to your comfort. There is a need for ⅝” clearance to accommodate the collar thickness, which is ⅜”. The pegs are 5" long with precision tensioned spring washers to hold them in place when open or closed.