The XB-420M is one of our newest additions for 08' Back orders are welcome and you will not be charged until the model is shipped. X-Treme's XB-420M Electric Bike is a 3 Wheel High-Power Mobility Scooter using a 1-piece mobility Electric motor / rear axle and differential unit. This E-Bike runs on 4-20Amp batteries, and comes with a wheelie bar for the not so old drivers. At full power the XB-420M can get up to 15+ MPH, easily the fastest mobility scooter on the market! And for those faint at heart a speed control unit can be used. Also included in a reverse gear, arm rests and a stylish cargo rack. Extra storage under the seat as well. Our line of XB-420M's comes in a slick Black color. With the rising gas prices these days Electric modes of transportation are becoming an ever more affordable necessity versus traditional transportation.