theebikemotor 36V350W Hub Motor Electric Bike Conversion Kit + LCD+ Disc Brake The kit includes motorised wheel, motor controller, PAS, brake lever, throttle, LCD display & 6 or 7 speed gear for the rear wheel. Top speed: 25km/h(15mile/h) goes with 26inch wheel LCD display shows battery power level, time, speed, mileage, gear. Disc Brake: For front wheel 160mmDia. plate; For rear wheel 140mmDia. plate. Extend life time for the brake, much sturdier than V-brakes Pedal Assistance System (PAS)to let you enjoy cycling while driving electric bike