Yamaha Motor Thailand has just got their Mio updated to 125cc, while still offering the updated look for the Mio 115. This has been a good news since many AT bikers like to have more power for their bike.
Yamaha Mio 125 is offered with Mikuni BS26 carburetor, 4-stroke with 2-valve 10.9:1 compression ratio, DiAsil engine, liquid-cooled and forged piston (better than the cheap cast iron piston).
There are three model to choose from that is the cute model, Mio 125 GT, the one with alloy rim, Mio 125 MX and the last one, Mio 125 RR.
For more info: http://www.yamaha-motor.co.th