CDI for beta and rieju, sherco, yamaha and mbk with 8-pin power-up ignition. Like the original CDI, this Naraku CDI has no speed limit. However, the Naraku CDI is a lot cheaper than the OEM part. Please be sure to check whether an 8-pin CDI is installed before ordering on the vehicle. OEM number for comparison purposes: Rieju 0/005.705.3880, Yamaha/MBK 5WX-H5540-00.