We adopt professional manufacturing process and strict process control of production . with an efficient R&D and management team. Hopefully our emtb bikes will take you anywhere no matter where Rail trails . gravel . city streets . back roads . bike paths with experience well. Ridstar electric bicycle will bring you more and more perfect riding pleasure. The bright LED headlight is equipped for night riding. Front and rear oil disc brakes fully protect your safety. The foldable design for easy storage and trunk. The seat and handlebar are both adjustable to suit people of different heights. Meanwhile . the 48V 14Ah lithium-ion battery offers you longer riding time and distance. Main Feature: Brake & Gear Shift System??With front and rear disc brakes and 7-speed transmission system .uphill and downhill . slow . constant speed . speed up . all can be satisfied. Upgraded Shock Absorbers: Front fork :20 “fork lock suspension lock/hydraulic shock absorption ;Brake system: front and rear oil disc brake.Can absorb bumps on rough terrain and achieve a double shock absorption effect. Equipped with Powerful 500W Motor:This electric bicycle equipped with 750W brushless motor and 48V/14Ah built-in battery . speed up to 20 Mph . 40-50 miles(with pedal assist) of range.