Shimano UN55 Square Taper English Threaded Bottom Bracket
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Details
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
Part Numbers
| Option | UPC | MPN |
|---|---|---|
| 107mm / English / Square Taper / 68mm | 689228778801 | EBBUN55B07 |
| 107mm / English / Square Taper / 73mm | 689228778726 | EBBUN55C07 |
| 107mm / Italian / Square Taper / 70mm | 689228778788 | EBBUN55I07 |
| 110mm / English / Square Taper / 68mm | 689228778887 | EBBUN55B10 |
| 110mm / English / Square Taper / 73mm | 689228778825 | EBBUN55C10 |
| 110mm / Italian / Square Taper / 70mm | 689228778771 | EBBUN55I10 |
| 113mm / English / Square Taper / 68mm | 689228778757 | EBBUN55B13 |
| 113mm / English / Square Taper / 73mm | 689228778740 | EBBUN55C13 |
| 113mm / Italian / Square Taper / 70mm | 689228778856 | EBBUN55I13 |
| 115mm / English / Square Taper / 68mm | 689228778894 | EBBUN55B15 |
| 115mm / Italian / Square Taper / 70mm | 689228778818 | EBBUN55I15 |
| 118mm / English / Square Taper / 68mm | 689228778795 | EBBUN55B18 |
| 118mm / English / Square Taper / 73mm | 689228778733 | EBBUN55C18 |
| 118mm / Italian / Square Taper / 70mm | 689228778849 | EBBUN55I18 |
| 122.5mm / English / Square Taper / 68mm | 689228778870 | EBBUN55B22 |
| 122.5mm / English / Square Taper / 73mm | 689228778863 | EBBUN55C22 |
| 122.5mm / Italian / Square Taper / 70mm | 689228778832 | EBBUN55I22 |
| 127mm / English / Square Taper / 68mm | 689228778764 | EBBUN55B27 |