When u purchase the new bike here it is note that the speed is not to exceed more than 30 -40 kmph because of new materials and assembly warn out dust and mist is in the engie so the sttrengh will be decrease when u speeds up ur new vehicle so pls keep avereagr of better it is necessary to have the bike mantainace to keep the methods to prevent your bike from rusting or any thinfg happened to ur bike