Skip to main content
  1. Home
  2. Bicycling Catalog
  3. Parts
  4. Bottom Brackets
  5. Shimano

Shimano UN55 Square Taper English Threaded Bottom Bracket

Shimano UN55 Square Taper English Threaded Bottom Bracket
$23.99 - $34.99
Model:
English
Spindle:
Square Taper
Please select options
This item is not permitted to be shipped, however it can be purchased online and picked up at one of our stores at your convenience OR we can deliver to your home or office for a $50 fee to the following counties in Maryland: Anne Arundel, Baltimore, Carroll, Harford, Howard, and Baltimore City.

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 BBS30743475D
110mm / English / Square Taper / 68mm 689228778887 EBBUN55B10 BBS30162461D
110mm / English / Square Taper / 73mm 689228778825 EBBUN55C10 BBS30233547D
113mm / English / Square Taper / 68mm 689228778757 EBBUN55B13 BBS25764529G
113mm / English / Square Taper / 73mm 689228778740 EBBUN55C13 BBS30907975D
115mm / English / Square Taper / 68mm 689228778894 EBBUN55B15 BBS30462612D
118mm / English / Square Taper / 68mm 689228778795 EBBUN55B18 BBS30282616D
118mm / English / Square Taper / 70mm 689228778849 EBBUN55I18
118mm / English / Square Taper / 73mm 689228778733 EBBUN55C18
122.5mm / English / Square Taper / 68mm 689228778870 EBBUN55B22 BBS30640869D
122.5mm / English / Square Taper / 73mm 689228778863 EBBUN55C22 BBS30208294D
127mm / English / Square Taper / 68mm 689228778764 EBBUN55B27
127mm / English / Square Taper / 70mm
127mm / English / Square Taper / 73mm