i've recently started riding a standard 125 typhoon , & was wondering if its restricted in some way as it will only do 70, but there seams to be loads of throttle left. theres nowt wrong with the engine in my opinion because it easily gets there accelerating well, it'll pop wheelies & will even do 70 up hill.
std typhoon 125's arent amazingly fast, on account of being air cooled... 65-70 mph sounds about right