shuangye fat tire electric bike, 250w 350w 500w 750w 1000w 2000w, 36v 48v 60v battery, max speed 25km/h,30km/h,35km/h,40km/h,60km/h
shuangye fat tire electric bike, 250w 350w 500w 750w 1000w 2000w, 36v 48v 60v battery, max speed 25km/h,30km/h,35km/h,40km/h,60km/h
