{"product_id":"shimano-bottom-bracket-bb-un55-bsa-73-122-5mm","title":"Shimano Bottom Bracket BB-UN55 BSA 73-122.5mm","description":"\u003cp\u003eThe Shimano BB-UN55 is a square-taper cartridge bottom bracket built to the English-threaded standard, offering a dependable balance of quality, value and durability. Its hollow spindle design pairs with JIS square-taper cranksets, giving riders a straightforward, long-lasting foundation for everyday drivetrain performance across a wide range of bicycle builds.\u003c\/p\u003e\n\u003cp\u003eBuilt with a cartridge bearing assembly, the BB-UN55 threads into a 73mm English (BSA) bottom bracket shell and uses a 122.5mm spindle, providing consistent operation and efficient power transfer. Crankarm fixing bolts are not included, so riders should source them separately when installing this bottom bracket on compatible frames.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuick Facts\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width:100%; border-collapse: collapse; border: 1px solid #ddd;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #F2F2F2; text-align: left;\"\u003e\n      \u003cth style=\"padding: 12px; border: 1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n      \u003cth style=\"padding: 12px; border: 1px solid #ddd;\"\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eBottom Bracket Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eSquare-Taper (JIS) Cartridge\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCrankset Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eJIS Square-Taper Cranksets\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eThread Standard \u0026amp; Shell Width\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eEnglish (BSA), 73mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSpindle Length\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e122.5mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCrankarm Bolts\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eNot Included\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":42673001037887,"sku":"210000123259","price":45.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0066\/2283\/8853\/files\/shimano-bottom-bracket-bb-un55-bsa-73-122-5mm-parts-bottom-brackets-1265342325.png?v=1793400611","url":"https:\/\/bici.cc\/products\/shimano-bottom-bracket-bb-un55-bsa-73-122-5mm","provider":"Bici","version":"1.0","type":"link"}