Performance CDI Box - GY6/QMB139 - 49cc/50cc/125cc/150cc/232cc

If you are looking for a quick and easy performance upgrade, or just a reliability upgrade for your GY6 or QMB139 scooter, this is the answer. This Performance CDI box will change the timing curve of your engine, and remove the stock rev limiter. This will result in more power and a higher top speed.

Side Note: Upgrading your CDI box isn't going to be a night and day difference, however the quality and reliability of this CDI box will be! This CDI box is an A/C CDI box. Please be sure your scooter is built with an A/C CDI. D/C CDI boxes are much larger. Generally, with a D/C CDI, the scooter's headlights will turn on when the key is turned, without the engine running. This CDI will fit all 4-stroke scooters from 49cc-232cc with a QMB139 motor or a GY6 motor.

This will fit all:

- GY6 engines (with A/C CDI)
- QMB139 engines (with A/C CDI)
- Genuine Buddy 125cc-150cc
- Taotao 49cc-150cc (with A/C CDI)
- SunL 49cc-150cc (with A/C CDI)
- ALL Chinese scooters 49cc-232cc (with A/C CDI)

PLEASE NOTE: The cosmetics of this CDI box has changed from the picture, but the internals remain the same.

Electrical items are not returnable, please do the following before ordering:

Check the plug style on your stock CDI to make sure it is the same style. Confirm whether you have an AC or DC charging system. You can determine whether an AC or DC CDI is installed by disconnecting the battery switch on the ignition, and trying to start the scooter with the kickstarter. If the scooter starts, an AC CDI is installed. If the scooter does not start, a DC CDI is installed.