Electronic Motor:TENWAYS C9 Hub Motor (250 W Power, 45 Nm Torque) Controller:Vector Sine Wave Controller Sensor:Torque Sensor Display:TFT Color Display Battery:504Wh ( 36 V, 14 Ah ) Lithium-ion Battery Performance Top Speed:25 km/h* *The motor will stop giving assist at the stated top speed. You can still ride beyond the stated top speed with pure muscle power. This limit is set in accordance with local regulations. Range:Up to 100 km* *Actual performance will vary depending on temperature, road conditions, rider's weight, etc. Climbing Ability:Suitable for moderate urban slopes *The actual performance would depend on the rider's physical strength. Components Frame:6061 Aluminium Frame Crankset:Gates CDX Crankset Wheels:20'' Aluminium Rims Drivetrain:Single-speed Drivetrain Gates CDN Carbon Belt Brake:TEKTRO Hydraulic Disc Brakes Tires:CST Puncture-proof 20'' Tires Front Fork:TENWAYS Alloy Rigid Fork Weight:Net weight: 19.8 kg (excluding all accessories) Permissible Max. Weight: 145 kg MIK HD Rear Carrier, Max. Load: 27 kg* All stated weight numbers have a +/- 3%-5% tolerance. Net weight includes the battery but excludes all accessories. Full weight includes the battery and all accessories.