BAFANG 48V250W Rear Motor Fat Wheel Ebike Conversion Kit Cassette 20/24/26*4.0''

PAS (Pedal Assistant Sensor). Flywheel type:Cassette. 130 Thumb Throttle. Reduction ratio of 1: 5. Install position: Rear wheel. Motor Specifications Installation widths(OLD)/ drop out: 175mm/190 mm.

eBay