Origin8 Chain guide

This chain guide helps prevent the occasional chain slip that can occur with the Bafang mid drive motor electric bike kit. It works well with 68 and 73 mm bottom bracket shell widths and with frames with seat tubes centered to the bottom bracket. Some step through frames and cruiser type bikes have seat tubes behind the bottom bracket with a pedal forward design and do not allow the chain guide to line up over the chain ring. Will not work with Fat Bikes.