New Racing Performance CDI kit + ignition coil + spark plug compatible with GY6 150cc 125cc 5

Material: Metal. Color: See photo. Features: New high-performance 6-pin racing CDI + ignition coil + spark plug for GY6 50cc, 125cc, and 150cc scooters. This CDI is AC (alternating current) ignition. Note: This CDI is not compatible with Honda TRX 125 (1987-1988) and later models. Simplified plug-and-play installation. If your CDI has the same connector, this CDI is compatible. High-performance, high-voltage racing ignition coil for scooters, quads, karts, and mopeds equipped with GY6 50cc QMB139 and 150cc/125cc engines. How to identify the type of CDI (AC or DC): 1. On a 6-pin GY6 system, the CDI is AC (alternating current) if 3 wires are connected to pin 4 and 2 wires to pin 2. Conversely, for a DC (direct current) system, if you have a larger CDI unit, 3 or 4 wires will connect to the 4-pin pin and only one wire to the 2-pin pin. 2. In general, DC CDIs are larger than AC CDIs. For example, a standard AC CDI unit is 65 mm long x 36 mm wide x 22 mm high or 58 mm long x 33 mm wide x 22 mm high, while a standard DC CDI unit is larger, for example, 75 mm long x 42 mm wide x 24 mm high or 96 mm long x 55 mm wide x 24 mm high. These dimensions apply only to standard original CDI units and do not include the dimensions of racing CDI units. 3. Another test: If the headlights illuminate with the engine off (ignition on), it is a DC system. In an AC system, the headlight requires the engine to be running. Another indicator: If the engine only runs on a battery, it is a DC system. If it runs without a battery, it is an AC system. Please check whether your scooter requires an AC or DC ignition CDI before ordering. Quantity: 1 set. Note: Due to differences in monitors, the actual color of the item may differ slightly from the color shown.