Finally! An adaptor to allow the Bafang BBSHD mid drive motor to fit into Shiman PF41 bottom bracket shells. This is a 2 piece adaptor machined from 6061 aluminum. Its 2 peices for a reason allowing it to fit in both smooth bore PF41 shells and the shells without smooth bore. We recommend using the 100mm width BBSHD motors with this adaptor. Now you can finally install the amazing mid drive into your modern full suspension mountain bikes, or any bike you desire with the Shimano PF41 bottom bracket shell. More info seen here.