Convert your road bike into an electric bike with pedal assist quickly and easily. The system is easily installed by changing the rear wheel and the battery in place of the bottle cage, without altering the bike's aesthetics. The pedal assist sensor is integrated directly into the motor, and the assist control, with its indicator light, is located on the battery cover for convenient and intuitive operation. The range reaches up to 100 km with minimum assistance and 40 km in maximum mode. By deactivating assistance on descents or flat terrain, battery life is significantly increased. Rims designed for wider tires and manufactured with state-of-the-art aluminum alloy. 180W 4.9Ah 36V lithium battery, with 4 power modes on the battery cover, battery holder and high-speed Pedaltec controller 25km/h included, all weighing 1300g. AKM electric motor with a power of 36V 250W and a torque of 30Nm. We have been centering wheels since 1984 Available sizes: 29" Rim material: Super Alloy T10 Aluminum Finish: Double-walled Magnesium and Niobium Profile: 23mm Inner Width: 23mm Outer Width: 28mm Tire Compatibility: Clincher, Tubeless Ready Hubs: Nitro MTB Front / AKM E-Bike Rear Bearings: Steel Brake system: Disc IS6 Front axle: 15/12×100 Rear Axle: 12×142 Hubs: Shimano Spokes: Sapim Race Straight Pull Weight (g): Set 3420 / Rear: 2580 / Battery: 1300 Recommended tire size: 2.20" to 2.40" Included: 180W 4.9Ah 36V Lithium Battery, Charger, Controller, UST Valves, Pre-installed Rim Tape, Spare Spokes.