Upgraded Front and Rear Hydraulic Brake Systems with Adjustable Brake Levers, the best stopping technology in the market. The Knight Turbo comes with Reinforced Front Shocks and Rear Air Shocks, for a smoother ride under different road conditions. 72V/32Ah High Capacity Battery Pack , up to 70km with one charge. The Emmo Super Torque Motor, has a powerful torque and excellent performance. This comes with a Built -in Bluetooth MP3 player and FM radio system, bring more fun to your rides. 72V/32Ah Lead Acid: $ 2949 72V/30Ah Lithium: $ 3999 72V/50Ah Lithium: $ 5099