{"product_id":"shimano-un300-bs-bottom-bracket-sealed-cartridge-for-square-taper-chainsets","title":"Shimano UN300 BS Bottom Bracket Sealed Cartridge for Square Taper Chainsets","description":"\u003cp\u003eThe Shimano UN300 BS Bottom Bracket is engineered for reliable performance with traditional chainsets. Its super-accurate bearings ensure smooth operation, enhancing both efficiency and durability during rides. Designed as a sealed cartridge unit, it resists dirt, mud, and water, providing maintenance-free use and extended bearing life.\u003c\/p\u003e\n\n\u003cp\u003eInstallation is quick and hassle-free, requiring no adjustments, while the narrow body design allows optimal cable routing underneath the bottom bracket. This component combines durability with practical features to keep your bike running smoothly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eProviding smooth and reliable rotation with precision bearings\u003c\/li\u003e\n  \u003cli\u003eExtending component life through sealed cartridge design\u003c\/li\u003e\n  \u003cli\u003eEasy installation without the need for adjustments\u003c\/li\u003e\n  \u003cli\u003eAllowing efficient cable routing thanks to its narrow body\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatibility with non-square tapered spindle chainsets\u003c\/li\u003e\n  \u003cli\u003eUse in bikes requiring bottom brackets designed for press-fit systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this bottom bracket compatible with all Shimano chainsets?\u003c\/strong\u003e\u003cbr\u003eThe UN300 BS is designed for traditional square tapered spindle chainsets; compatibility with other types is limited.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it require regular maintenance?\u003c\/strong\u003e\u003cbr\u003eNo, the sealed cartridge design keeps contaminants out, making it maintenance-free under normal conditions.\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"68 - 117.5mm Chaincase \/ Silver","offer_id":45478418055343,"sku":"BBUN300KB17","price":20.03,"currency_code":"GBP","in_stock":true},{"title":"68 - 110mm Chaincase \/ Silver","offer_id":45478418088111,"sku":"BBUN300KB10","price":20.03,"currency_code":"GBP","in_stock":true},{"title":"68 - 118mm Chaincase \/ Silver","offer_id":45478418120879,"sku":"BBUN300KB18","price":20.03,"currency_code":"GBP","in_stock":true},{"title":"68 - 117.5mm \/ Silver","offer_id":45478418153647,"sku":"BBUN300B17","price":20.03,"currency_code":"GBP","in_stock":true},{"title":"68 - 122.5mm E-type \/ Silver","offer_id":45478418186415,"sku":"BBUN300EB23","price":20.03,"currency_code":"GBP","in_stock":true},{"title":"68 - 122.5mm (LL123) Chaincase \/ Silver","offer_id":45478418219183,"sku":"BBUN300KB23","price":20.03,"currency_code":"GBP","in_stock":true},{"title":"73 - 113mm \/ Silver","offer_id":45478418251951,"sku":"BBUN300C13","price":20.03,"currency_code":"GBP","in_stock":true},{"title":"73 - 118mm \/ Silver","offer_id":45478418284719,"sku":"BBUN300C18","price":20.03,"currency_code":"GBP","in_stock":true},{"title":"68 - 107mm \/ Silver","offer_id":45478418317487,"sku":"BBUN300B07","price":20.03,"currency_code":"GBP","in_stock":true},{"title":"68 - 127.5mm \/ Silver","offer_id":45478418350255,"sku":"BBUN300B27","price":13.42,"currency_code":"GBP","in_stock":true},{"title":"68 - 115mm \/ Silver","offer_id":45478418383023,"sku":"BBUN300B15","price":13.42,"currency_code":"GBP","in_stock":true},{"title":"68 - 110mm \/ Silver","offer_id":45478418415791,"sku":"BBUN300B10","price":13.42,"currency_code":"GBP","in_stock":true},{"title":"68 - 118mm \/ Silver","offer_id":45478418448559,"sku":"BBUN300B18","price":13.42,"currency_code":"GBP","in_stock":true},{"title":"73 - 122mm \/ Silver","offer_id":45478418481327,"sku":"BBUN300C23","price":13.42,"currency_code":"GBP","in_stock":true},{"title":"68 - 113mm \/ Silver","offer_id":45478418514095,"sku":"BBUN300B13","price":13.42,"currency_code":"GBP","in_stock":true},{"title":"68 - 122.5mm \/ Silver","offer_id":45478418546863,"sku":"BBUN300B23","price":13.42,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/1614853371-20576400.jpg?v=1768521747","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-un300-bs-bottom-bracket-sealed-cartridge-for-square-taper-chainsets","provider":"Swinnerton Cycles","version":"1.0","type":"link"}