Rated parameter of 36V / 250 ~ 350W; suitable for disc brakes and supports wheel diameters ranging from 20 inches to 700C. The product weighs 2.5kg and can achieve a maximum power of 600W; the highest efficiency is up to 80%; the unique gear set technical solution has obtained an excellent mute effect, and the no-load noise is less than 55dB; the side end cover outlet design achieves IP65 protection level. This type is recommended to be adapted to mountain and large-wheel city bikes.