Shimano UN55 Square Taper English Threaded Bottom Bracket
$23.99
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 |
|---|---|---|---|
| 113mm / English / Square Taper / 68mm | 689228778757 | EBBUN55B13 | BBS30885988D |
| 113mm / English / Square Taper / 73mm | 689228778740 | EBBUN55C13 | BBS30914684D |
| 115mm / English / Square Taper / 68mm | 689228778894 | EBBUN55B15 | BBS30630305D |
| 118mm / English / Square Taper / 68mm | 689228778795 | EBBUN55B18 | BBS30416278D |
| 118mm / English / Square Taper / 73mm | 689228778733 | EBBUN55C18 | BBS30641297D |
| 122.5mm / English / Square Taper / 68mm | 689228778870 | EBBUN55B22 | BBS30918832D |
| 127mm / English / Square Taper / 68mm | 689228778764 | EBBUN55B27 | SHI37642000T |
Shimano UN55 Square Taper English Threaded Bottom Bracket
$23.99