{"product_id":"shimano-bb-un300-square-taper-bottom-bracket","title":"Shimano BB-UN300 Square Taper Bottom Bracket","description":"\u003cdiv style=\"text-align: center;\"\u003e\u003cb\u003e\u003cu\u003eShimano BB-UN300 Square Taper Bottom Bracket\u003c\/u\u003e\u003c\/b\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Shimano BB-UN300 Square Taper Bottom Bracket is a durable, low-maintenance replacement designed for bicycles with traditional square taper cranksets. Ideal for commuter bikes, touring bikes, classic road bikes and mountain bikes, it provides smooth, reliable crankset rotation and long-lasting performance.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eFeaturing a sealed cartridge bearing assembly, the BB-UN300 helps protect its internal components from dirt, mud and water, reducing wear and eliminating the need for regular bearing maintenance. Its precision bearings ensure smooth operation, while the robust construction provides dependable performance for everyday cycling.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eModel: BB-UN300\u003c\/li\u003e\n\u003cli\u003eBottom bracket type: Sealed cartridge\u003c\/li\u003e\n\u003cli\u003eAxle interface: Square taper\u003c\/li\u003e\n\u003cli\u003eBottom bracket shell width: 68mm\u003c\/li\u003e\n\u003cli\u003eSpindle length: 113mm\u003c\/li\u003e\n\u003cli\u003eBearing type: Sealed cartridge bearings\u003c\/li\u003e\n\u003cli\u003eMaintenance: Maintenance-free sealed bearing assembly\u003c\/li\u003e\n\u003cli\u003eInstallation: Cartridge design requiring no bearing adjustment\u003c\/li\u003e\n\u003cli\u003eIntended use: Road, MTB, touring and commuter bikes\u003c\/li\u003e\n\u003cli\u003eCompatibility: Square taper cranksets requiring a 113mm spindle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"68 x 113mm","offer_id":63264715637123,"sku":"BB30068 \/ BU LEFT","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0582\/0196\/4698\/files\/57_af7b0193-836e-4d97-b714-c0b8ea5b325d.png?v=1794305226","url":"https:\/\/sportandleisure.com\/en-us\/products\/shimano-bb-un300-square-taper-bottom-bracket","provider":"Sport \u0026 Leisure","version":"1.0","type":"link"}