It is available in different frames, such as Retro-100, Retro-Mini, Retro-Extend and Retro-MX, with Bafang rear hub motor from 48v 250w to 48v 1000w. Besides that, Retro-OLI comes with 36v 250w (max torque is 70N) and 48v 500w (max torque is 110N) OLI brand mid motor for option.
