The Shimano BBUN55 bottom bracket for square taped cranks is thanks to the raisings at both sides perfectly compatible to add-e.
Square-taper bottom brackets have a square tapered axle that connects the crankset to the bottom bracket.
- Application: Road, MTB, City Bike
- Material: Steel, Alloy
- Type: Square-taper (JIS)
- Thread: BSA
- Width: 68mm or 73mm
- Axle length 110mm – 127mm
- Cartridge: Yes
- For chain case: No
- Original Shimano bottom bracket