Sedici Sistema II / 3 Base Plates Replacement base plates for Sedici Sistema 3, Sedici Sistema II Parlare and Sistema II Carbon models. Features: Easy installation Left and ride sides included Compatible with all Sedici Sistema 3, Sedici Sistema II Parlare and Sistema II Carbon models Fits standard Sistema 3 models (using fiberglass composite shell) and Sistema 3 Parlare Bluetooth models Not compatible with Carbon Fiber versions of the Sistema 3 helmet