2016 Viper Tandem 27.5 MTB Series - Walkaround - 2015 Eurobike - YouTube
Amazon.com : EB15 Viper Folding Off-Road Electric Mountain Bike, 26” All-Terrain Electric Bike for City Cruising & Trail Riding, Brushless 350W Motor, Removable Battery, Full Dual Suspension, Shimano 21 Gears : Sports