RANDRIDE Mountain Electric Bike Series Includes Hardtail Electric Bike, Full Suspension E-Bike, Fat Tire Electric Bicycle, Configure Up To 350W, 500W,750W,1000W Motor, 10.4AH,13.6AH,15AH,17AH Lithium Battery, SHIMANO 7,9,21,27 Speed.(Please chat with us to replace other configurations you want.)