I own a XRX125,just 2 mths.My situation is like other riders that we hv the problem of top speed (110km).As most of us understand that this bike doesn´t meant for high speed but 110km/h is too little(even a moped hv done 140km/h),whereby my pal´s MZ125SM done 130km on a stock bike..Anything i can do for extra revv-up...