Traversino da mount behind the dome of the bike, diameter 12mm. The sleeper allows you to have a support to mount navigators or smartphone port piin the congenial position, or above the instrumentation, thus avoiding having to lower your gaze while driving to see the device. On the FB_ _ _ it is possible to directly mount the device carriers GIVI S952B, S953B, S954B etc., or alternatively the elegant aluminum support milled from the full S902A that allows in turn the fixing of the various cases S952B, S953B, S954B etc. without the nylon fixing system, thus obtaining a result with a decidedly technical appearance. The FB range of (FAIRING UPPER BRACKET) sleepers can also be used da for Tom Tom Rider 40-400-410 and Garmin Zumo 390LM motorcycle navigators, 590LM, 220,350,400,450,550,340,660,345,395,595; For tom tom riders you can choose between two fastening systems: STTR40 support equipped with nylon hooking system combined with the aluminum adapter STT40SM aluminum adaptor that must be combined with the aluminum support S902A