Motor: Motor-wheel 3rd generation 2000W Brushless DC EEC 45kmh 3000W Brushless DC EEC 70kmh Battery: 48V38AH Silicon Battery/Lithium Battery 60V40AH Silicon Battery/Lithium Battery Max torque : up to 90Nm at 52A current Rate current at 30km/h speed: only 17A Max Speed: 30-40mph (50-70kmh) Range: 40mile/70km (Silicon battery) 50mile/80km(Lithium battery) (Range will be half at top speed) Charging time:6-8H(Silicon battery) 4-6H(Lithium battery) Recharging cycles :>=500¡¯(Silicon battery) >=1000¡¯ Climbing capacity:25% Controller:Brussless controller(Kelly controller optional) Brakes : front/rear Hydraulic disc diameter 220 mm Thickness 4mm Suspesion: Front, hydraulic forks 4 inches (the longest you can find) Rear, hydraulic shock absorbers Tires:CET Tubeless tires E-marks Size : 3.50-10¡¯¡¯ E-marks Light:E-mark mirrors/front light/reflector/tail light/blinkers/meter/horn Charger: Intelligente UI type Thundersky GBS Payload:290lbs(150kg) Passed: EEC DOT CE EEC No.e4_2002_24_2312_00 at 45kmh No.e4_2002_24_2311_00 at 70kmh Dimension : =174*57*114 Packing: carton with iron frame and paper box Q/C:20¡¯-26Pcs;40¡¯HC-52Pcs Delivery:20 days