Suitable for Beta RR 50 with Hidria AET ignition we offer a Naraku CDI ignition unit with integrated ignition coil as a replacement part. The CDI has identical speed-dependent ignition timing to the OEM CDI and, as far as we know, is probably currently the only available aftermarket replacement CDI / ignition coil for Hidria AET ignitions on the market. For comparison purposes Beta OEM Number: 16754132