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
|107mm / English / Square Taper / 70mm||689228778788||EBBUN55I07|
|110mm / English / Square Taper / 70mm||689228778771||EBBUN55I10|
|118mm / English / Square Taper / 70mm||689228778849||EBBUN55I18|
|122.5mm / English / Square Taper / 70mm||689228778832||EBBUN55I22|