Variable advance CDI box for so many scooters. If your bike has a horizontal or vertical Minarelli with the Yamaha/Japanese CDI, this is for you.
Yamaha JOG, MBK Booster, Aprilia Sonic, etc.
5 wire box with black, orange, red, white/red, and black/white wires out.
Comes with an offset woodruff key for easy installation. Also includes a feeler gauge for checking and setting the the gap on the pickup. More instructions HERE!