Shimano UN55 Square Taper English Threaded Bottom Bracket

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 | Store SKU |
---|---|---|---|
107mm / English / Square Taper / 73mm | 689228778726 | EBBUN55C07 | 59665 |
110mm / English / Square Taper / 68mm | 689228778887 | EBBUN55B10 | 39394 |
110mm / English / Square Taper / 73mm | 689228778825 | EBBUN55C10 | 24394 |
113mm / English / Square Taper / 68mm | 689228778757 | EBBUN55B13 | 59706 |
115mm / English / Square Taper / 68mm | 689228778894 | EBBUN55B15 | 24384 |
118mm / English / Square Taper / 68mm | 689228778795 | EBBUN55B18 | 24386 |
118mm / English / Square Taper / 73mm | 689228778733 | EBBUN55C18 | 24398 |
122.5mm / English / Square Taper / 73mm | 689228778863 | EBBUN55C22 | 40204 |
127mm / English / Square Taper / 68mm | 689228778764 | EBBUN55B27 | 40202 |