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
|110mm / English / Square Taper / 73mm||689228778825||EBBUN55C10||210000000917|
|122.5mm / English / Square Taper / 68mm||689228778870||EBBUN55B22||210000000867|
|127mm / English / Square Taper / 68mm||689228778764||EBBUN55B27||210000000866|