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Shimano UN55 Square Taper English Threaded Bottom Bracket

Shimano UN55 Square Taper English Threaded Bottom Bracket

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$23.39 - $29.99

Product Details

Shimano UN55 Square Taper English Threaded Bottom Bracket

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 close open

    Option Barcode Manufacturer's Part Number Store SKU
    68 x 107mm 689228778801 EBBUN55B07
    70 x 113mm 689228778856 EBBUN55I13
    70 x 118mm 689228778849 EBBUN55I18
    70 x 122.5mm 689228778832 EBBUN55I22
    73 x 107mm 689228778726 EBBUN55C07
    73 x 110mm 689228778825 EBBUN55C10
    73 x 113mm 689228778740 EBBUN55C13
    73 x 118mm 689228778733 EBBUN55C18 SHI32393598B
    73 x 122.5mm 689228778863 EBBUN55C22
    68 x 110mm 689228778887 EBBUN55B10 CAR78249818K
    68 x 113mm 689228778757 EBBUN55B13
    68 x 115mm 689228778894 EBBUN55B15 SHI32612613B
    68 x 118mm 689228778795 EBBUN55B18 CAR7877497K
    68 x 122.5mm 689228778870 EBBUN55B22
    68 x 127mm 689228778764 EBBUN55B27
    70 x 107mm 689228778788 EBBUN55I07
    70 x 110mm 689228778771 EBBUN55I10
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  • Consumer Reviews close open


    by PowerReviews
Chain Reaction Bicycles is your local bicycle shop for the San Francisco Bay Area! Unlike some other shops, we are dedicated 100% to serving the needs of local cyclists; our offerings are exclusively available for in-store pickup. You will find us at 1451 El Camino Real, Redwood City CA, 94063. 650 366 7130. Our Los Altos location closed on September 24th, 2017; we have consolidated all operations within our Redwood City flagship store.  Our hours and directions may be found here. We look forward to taking care of all of your cycling needs, including service! Mike & Steve Jacoubowsky, Partners, Chain Reaction Bicycles. Serving you since 1980!