A device comprised of: a support arm; a mirror head functionally engaging the support arm along the support arm; a lower mounting assembly affixed to a vehicle and adapted to receive the support arm at a first end and comprised of a cup with a tapered inner surface; an upper mounting assembly, also affixed to the vehicle and engaging the support arm at a second end; and a mirror clutch assembly disposed substantially with the lower mounting assembly cup and comprised of: an upper cam with a plurality of detents on its lower surface; a lower cam located below and functionally engaging the upper cam and having a plurality recesses corresponding with the upper cam detents; a biasing member below the lower cam and exerting a biasing force on the lower cam; a taper compensation mechanism, to account for the tapered inner surface of the cup; and an upper cam locking mechanism for locking the upper cam in position relative to the support arm, such that upon exertion of an external force on the device, the support arm and upper cam axially rotate and the lower cam vertically translates to at least partially absorb the external force.