motor138Flexible and Powerful: The Ultimate Motorized Pulley for Medium-Lht Loads. Drive for medium-lht loads and with steel gearbox. This motorized pulley is a flexible component because ofMotor138 QS138 3000W V3 mid drive motor, it could be used for electric lht motorcycle, which could be 72V@100KPH. Application: e.g. Dirt bike E-motorcycle weht: approx 128kg+2*80kg