Model GT54 GT54 PRO MOTOR Peak 2000W Rear Hub Motor Peak 3000W Rear Hub Motor SPEED 39 MPH 49 MPH TORQUE 290 N·m 338 N·m BATTERY 21700 / 48V 27Ah Lithium Battery 21700 / 60V 25Ah Lithium Battery CONTROLLER 48V 32A Controller 60V 40A Integrated Fardriver Controller SUSPENSION All-aluminum Barrel Axle Inverted Fork + Rear Suspension Front Hydraulic Double Wishbone Suspension with Adjustable Damping + Rear Shock Absorber CHARGER 54.6V / 3A 67.2V / 3A (Faster Charging) TIRE Front wheel: 60/100-14 Rear wheel: 60/100-12 Front wheel: 60/100-14 Rear wheel: 60/100-12 BRAKE SYSTEM Front and rear disc hydraulic brake + electronic brake Front and rear disc hydraulic brake + electronic brake NET WEIGHT 106.5LBS 102.5LBS MAX LOAD 220LBS 220LBS PRODUCT SIZE 59.76''× 26.38''× 39.76''(L × W × H) 59.76''× 26.38''× 39.76''(L × W × H) SHIPPING SIZE 55.91''× 11.02''× 31.50''(L × W × H) 55.91''× 11.02''× 31.50''(L × W × H)