OEM Aprilia Front Wheel Bearing -#8110094 (AP8110094)
Genuine Aprilia front wheel bearing for '04-'07 RSVR Factory, '07 Tuono Factory, '00.5-'03 Mille-R, and '03-'05 Tuono Factory, Tuono Racing.
Though not ceramic, this wheel bearing is the one recommended for use with the Aprilia's premium sports models.
Aprilia part no 8110094
Part no 4 in the diagram