The Rebel uses the Bafang BBSHD mid-drive motor. It is Bafang's quietest high torque motor made- significantly quieter than the Bafang Ultra Drive M600. This motor provides the rider with unparalleled throttle response as well. If you ride using throttle more than pedal assist, this motor is better suited for you. The BBSHD is a beast of motor that produces a massive 160NM of torque and 1500 Peak Wattage Output. Another great feature of the Rebel is the ability to adjust the motor according to any E-Bike Classification you prefer. You can easily comply with all 3 classifications of E-Bike laws. If you're in search for a mid-drive bike that produces pure silence yet mind blowing power then Rambo Rebel is the bike for you. Whether your hunting, bird watching, or trail riding in the field noise matters, and so does power. This bike gives you both!One Year Manufacture Warranty with Lifetime Manufacture Frame Warranty