Shengmil0 S900 Electric Mountain Bike，15oo-Motor, 60 V 30 Ah Hydraulic Oil Brake,7 Speed Gears,20 x 4.0 Wide Tyre,Double Shoulder Shock Absorber,Adult Mountain Electric Motorcycle Bike. Model: S900. 20" x 4" fat tires also provide good grip and excellent shock absorption.
