Shimano's BB-UN55 Square Spindle Bottom Brackets are the unofficial standard for English-threaded cartridge bottom brackets. Quality, value, and durability come together to keep you cranking for many, many miles.
- Fits JIS Square-Taper Cranksets
- Hollow spindle
- Crankarm fixing bolts not included
|118mm / English / Square Taper / 68mm||689228778795||EBBUN55B18||210000001368|
|122.5mm / English / Square Taper / 68mm||689228778870||EBBUN55B22||210000002211|
|127mm / English / Square Taper / 68mm||689228778764||EBBUN55B27||210000001370|