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UN55 Square Taper English Threaded Bottom Bracket


UN55 Square Taper English Threaded Bottom Bracket
$24.99 - $29.99

Availability: In stock

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


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$24.99 - $29.99
Stock Availability by Location
Please select an option for PART SIZE to continue.
South Lamar 512.477.3472
517 South Lamar Blvd, Austin, Texas 78704
Research Blvd 512.345.7460
10947 Research Blvd, Austin, Texas 78759
Parmer Lane 512.637.6890
9900 W Parmer Lane, Austin, Texas 78717
Bee Cave 512.634.8844
12005 Bee Cave Road, Suite #4, Austin, Texas 78738
Guadalupe 512.267.3495
3202 Guadalupe Street, Austin, Texas 78705
Additional Information

Every product on our website is available for in-store pick-up at any of our five Austin Area locations.

Product Information

Additional Information

SKU 329559
Brand Shimano
Model Year 2019
Part Numbers

Product Variations

EBBUN55B07 689228778801 1008262 68 x 107mm
EBBUN55B10 689228778887 1008263 68 x 110mm
EBBUN55B13 689228778757 1008264 68 x 113mm
EBBUN55B18 689228778795 1008266 68 x 118mm
EBBUN55B22 689228778870 1008267 68 x 122.5mm
EBBUN55B27 689228778764 1008268 68 x 127mm
EBBUN55C10 689228778825 1008269 73 x 110mm
EBBUN55C13 689228778740 1008270 73 x 113mm
EBBUN55C18 689228778733 1008271 73 x 118mm
EBBUN55C22 689228778863 1008272 73 x 122.5mm