Ridstar Q20 Pro Off-Road Electric Bike 2*1000W 52V 20AH Dual Battery 55km/h Max Speed ​​288km Max Range Double Hydraulic Disc Brake

"Frame:20inch HCS frame (double controllers) " Front fork:double aluminum shoulder hydraulic shock absorber front fork Battery: double 52V 14.5Ah(showed 20ah) Lithium Battery Motor: double 52v 750W (no marking on the motor cover)high speed brushless motors Derailleur: SHIMANO 7 Speed Meter:LCD colorful meter+USB charger Driving Mode:Pure Electrical（power from front motor,rear motor and two motors),Human riding&PAS model Brakes: front and rear oil disc brakes Seat post: there is no seat post Tire: 20*4.0(CST BFT) Rim:20 inch aluminum alloy single layer cutter ring Fender:PVC fenders Package:143*31*84CM(with rearview mirror and small bag) 55KGS Mileage: 90-120km pure electric, 150-180km assisted