The 500W mid drive kit is a new design, through excellent processing technology and high-quality raw materials, the performance of 500W mid drive kit up to a higher standard. We are perfect for every detail of the 500W mid drive kit, guarantee the quality level, so as to bring you the perfect product experience. SailiMotor is a professional China 500W mid drive kit manufacturer and supplier, if you are looking for the best 500W mid drive kit with low price, consult us now!