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Products you can't find anywhere else!
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Pickup in store
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
Option | UPC | MPN | Store SKU |
---|---|---|---|
107mm / English / Square Taper / 68mm | 689228778801 | EBBUN55B07 | BBS23779683M |
107mm / English / Square Taper / 73mm | 689228778726 | EBBUN55C07 | BBS23911158M |
110mm / English / Square Taper / 68mm | 689228778887 | EBBUN55B10 | BBS30653598D |
107mm / Italian / Square Taper / 70mm | 689228778788 | EBBUN55I07 | |
110mm / English / Square Taper / 73mm | 689228778825 | EBBUN55C10 | BBS23882786M |
113mm / English / Square Taper / 68mm | 689228778757 | EBBUN55B13 | CAR71457361T |
113mm / English / Square Taper / 73mm | 689228778740 | EBBUN55C13 | |
115mm / English / Square Taper / 68mm | 689228778894 | EBBUN55B15 | BBS23673948M |
110mm / Italian / Square Taper / 70mm | 689228778771 | EBBUN55I10 | |
118mm / English / Square Taper / 68mm | 689228778795 | EBBUN55B18 | BBS30700884D |
118mm / English / Square Taper / 73mm | 689228778733 | EBBUN55C18 | |
122.5mm / English / Square Taper / 68mm | 689228778870 | EBBUN55B22 | SHI30645643R |
113mm / Italian / Square Taper / 70mm | 689228778856 | EBBUN55I13 | |
122.5mm / English / Square Taper / 73mm | 689228778863 | EBBUN55C22 | |
127mm / English / Square Taper / 68mm | 689228778764 | EBBUN55B27 | |
115mm / Italian / Square Taper / 70mm | 689228778818 | EBBUN55I15 | |
118mm / Italian / Square Taper / 70mm | 689228778849 | EBBUN55I18 | |
122.5mm / Italian / Square Taper / 70mm | 689228778832 | EBBUN55I22 |