Specific rear rack for MONOLOCK® or MONOKEY® top-case to be combined with the M5, M7, M8A, M8B, M9A, M9B, M10 or E251 MONOKEY® plate, or with the M5M or M6M MONOLOCK® plate, or with the plate already included in the MONOLOCK® top-case, or with the aluminium bag holder EX2M / if combined with M8A, M8B, M9A, M9B it does not allow the assembly of the stop light kit or the remote control device on the top-case