Shimano BB-UN300 68x122.5mm Square Type MTB Bottom Bracket ebike componet rotating the inner mount and

rotating the inner mount and reinserting the screws

Wider adjustment range allows riders of various styles

HBO adjust

Replacement e-bike stainless steel wire fork mount

Shimano BB-UN300 68x122.5mm Square Type MTB Bottom Bracket ebike componet rotating the inner mount andShimano Nexis Inter 3 Series Standard Structure Square Type MTB Bottom Bracket.. Shimano Series: Nexis Inter 3 . Size: 68 x 122. 5mm . Square Type Bottom Bracket . Quality performance cartridge bearing square bottom bracket . Better chainline stability with chain line stabilizer . Standard, E type, chain case options . Adapter material: Aluminium . Standard Structure . Use: MTB