Arms are connected with narrower and larger surfaces for greater grip. The clip-in models feature a stronger clip and tension system.
The UCS mount is directly compatible with action cameras and accessories, by using the included spacer.
The support structure rests against the ICS slot and provides great clearance without extensions.
1) Remove the f'iz:ik name plate and unscrew the stop. 2) Insert the mount and reattach the stop. 3) Mount the desired arm and go.
Based on feedback, we designed these mounts to be tighter than before. On some carbon-frame saddles they may be too tight. See this KB article that describes how to adjust the fit.