{"product_id":"shimano-bb-un300","title":"Shimano BB-UN300","description":"\u003cp data-path-to-node=\"2\"\u003e\u003cb data-path-to-node=\"2\" data-index-in-node=\"0\"\u003eThe Standard of Reliability. Sealed for Life.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"3\"\u003eThe Shimano BB-UN300 is a high-quality sealed cartridge unit designed for square-taper cranksets. Unlike older cup-and-cone systems that require constant adjustment, the UN300 features precision industrial bearings housed in a rock-solid steel body. It is engineered to provide a smooth, creak-free rotation for thousands of kilometers, making it the most cost-effective performance upgrade you can give to a hybrid, city, or entry-level mountain bike.\u003c\/p\u003e\n\u003cp data-path-to-node=\"4\"\u003e\u003cb data-path-to-node=\"4\" data-index-in-node=\"0\"\u003eWhy the BB-UN300 is the Industry Benchmark:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eSuperior Sealed Cartridge:\u003c\/b\u003e The internal bearings are protected by a robust multi-lip sealing system that acts as a fortress against water and road salt, ensuring your pedaling stays smooth through all four seasons.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eExceptional Spindle Stability:\u003c\/b\u003e Forged from high-tensile steel, the square-taper spindle is remarkably stiff, preventing the \"crank flex\" that can cause ghost-shifting or power loss during heavy climbing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eAnti-Creak Design:\u003c\/b\u003e The precision-machined threads and internal sleeve are designed to provide a perfect, concentric fit within your frame, eliminating the annoying \"click\" or \"creak\" common with budget alternatives.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eMassive Versatility:\u003c\/b\u003e Available in a vast array of spindle lengths (from \u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"72\"\u003e107mm to 127mm\u003c\/b\u003e) and shell widths (68mm BSA or 73mm), ensuring a perfect chainline for almost any classic 3x, 2x, or 1x drivetrain.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\"\u003eEasy Installation:\u003c\/b\u003e Designed for the standard 20-tooth splined bottom bracket tool, making it a simple, standardized swap for any home mechanic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,5,0\"\u003e\u003cb data-path-to-node=\"5,5,0\" data-index-in-node=\"0\"\u003eLightweight Aluminum\/Steel Construction:\u003c\/b\u003e Features a lightweight aluminum left-hand cup and a durable steel drive-side body for the optimal balance of weight and structural longevity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"6\"\u003e\u003cb data-path-to-node=\"6\" data-index-in-node=\"0\"\u003eTechnical Specifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cb data-path-to-node=\"7,0,0\" data-index-in-node=\"0\"\u003eSeries:\u003c\/b\u003e Shimano Non-Series (Replacement for UN26\/UN55)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003e\u003cb data-path-to-node=\"7,1,0\" data-index-in-node=\"0\"\u003eType:\u003c\/b\u003e Square Taper (JIS Standard)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,2,0\"\u003e\u003cb data-path-to-node=\"7,2,0\" data-index-in-node=\"0\"\u003eThread:\u003c\/b\u003e BSA (English) \/ 68mm or 73mm Shell\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,3,0\"\u003e\u003cb data-path-to-node=\"7,3,0\" data-index-in-node=\"0\"\u003eSpindle Material:\u003c\/b\u003e High-Tensile Steel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,0\"\u003e\u003cb data-path-to-node=\"7,4,0\" data-index-in-node=\"0\"\u003eCup Material:\u003c\/b\u003e Aluminum (Left) \/ Steel (Right)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,5,0\"\u003e\u003cb data-path-to-node=\"7,5,0\" data-index-in-node=\"0\"\u003eWeight:\u003c\/b\u003e Performance-focused for the category (approx. 280g-320g)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"8\"\u003e\n\u003cp data-path-to-node=\"9,0\"\u003e\u003cb data-path-to-node=\"9,0\" data-index-in-node=\"0\"\u003eThe Alegro Perspective:\u003c\/b\u003e In the shop, we call the UN300 the \"bulletproof option.\" If you have a trusty old steel frame or a daily commuter that lives outside, this is the bottom bracket you want. It’s not flashy, and it’s not made of carbon, but it is one of the few parts on a bike that you can truly install and then completely ignore for five years. It’s the definition of \"Shimano Quality\". Simple, effective, and practically indestructible.\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eIndestructible Rotation. Proven Performance. Power your Commute with Shimano.\u003c\/b\u003e\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"BSA68 \/ 107mm","offer_id":48824555602143,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA68 \/ 110mm","offer_id":48824555634911,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":true},{"title":"BSA68 \/ 113mm","offer_id":48824555667679,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA68 \/ 115mm","offer_id":48824555700447,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA68 \/ 117mm","offer_id":48824555733215,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA68 \/ 118mm","offer_id":48824555765983,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA68 \/ 122.5mm","offer_id":48824555798751,"sku":"EBBUN300B22X","price":35.0,"currency_code":"CAD","in_stock":true},{"title":"BSA68 \/ 127mm","offer_id":48824555864287,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA73 \/ 107mm","offer_id":48824555897055,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA73 \/ 110mm","offer_id":48824555929823,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA73 \/ 113mm","offer_id":48824555962591,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA73 \/ 115mm","offer_id":48824555995359,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA73 \/ 117mm","offer_id":48824556028127,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA73 \/ 118mm","offer_id":48824556060895,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":true},{"title":"BSA73 \/ 122mm","offer_id":48824556093663,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":true},{"title":"BSA73 \/ 123mm","offer_id":48824556126431,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false},{"title":"BSA73 \/ 127mm","offer_id":48824556159199,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/5452\/3103\/files\/380525-01_2.jpg?v=1775498509","url":"https:\/\/alegrocycles.com\/products\/shimano-bb-un300","provider":"Alegro Cycles","version":"1.0","type":"link"}