DC Fired, 6 Pin High Performance Racing CDI fits most Chinese 250cc Go Karts Dune Buggy GY6 Scooters
Square connector on this DC racing CDI box
Before ordering, check whether AC or DC fired CDI is needed
Note on GY6 6-Pin AC or DC fired CDI box :
If you have 3-wires going into the 4-plug side and 2-wires going into the 2-plug side you have AC Fire system.
If you have larger CDI box, 3 or 4 wires going into the 4-plug side and only 1 wire going into the 2-plug side, you have DC fired system.
Usually, DC CDI's tend to be larger in size than the AC ones.
Common AC CDI dimensions (LxWxH mm): 65x36x 22 or 58x33x22.
Common DC CDI dimensions (LxWxH mm): 75x42x24 or 96x55x24
Please note, reference dimensions not meant for racing CDIs
If engine will only run with battery, it is DC fired system.
If engine will run without a battery, it is a AC fired system.