{"product_id":"rotor-pf4630-bbright-to-bb30-ceramic-bottom-bracket","title":"Rotor PF4630 (BBright) to BB30 Ceramic Bottom Bracket","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor PF4630 (BBright) to BB30 Ceramic Bottom Bracket\u003c\/strong\u003e is the purpose-built solution for running 30mm spindle cranks in a BBright press-fit shell — a standard that calls for a 79mm-wide, 46mm inner diameter housing. Where a standard steel bottom bracket leaves efficiency on the table, this one uses hybrid ceramic bearings: ceramic balls running in steel races that are harder, rounder, and smoother than all-steel alternatives, rolling with measurably less drag and requiring less frequent maintenance.\u003c\/p\u003e\n\n\u003cp\u003eInstallation follows standard press-fit procedure — two bearing cups and a sleeve, pressed in one side at a time. The kit is compatible with Rotor 3D30 and 3D30+ cranks, as well as BB386 EVO cranks, covering the most common 30mm spindle options for BBright-equipped frames. At 102g, it adds virtually nothing to the build while upgrading one of the most overlooked contact points on the drivetrain.\u003c\/p\u003e\n\n\u003ch3\u003eRotor PF4630 (BBright) to BB30 Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBottom bracket standard:\u003c\/strong\u003e BBright press-fit (PF4630)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShell width:\u003c\/strong\u003e 79mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShell inner diameter:\u003c\/strong\u003e 46mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle diameter:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearing type:\u003c\/strong\u003e Hybrid ceramic (ceramic balls, steel races)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 102g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible cranks:\u003c\/strong\u003e Rotor 3D30, 3D30+, BB386 EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"Red","offer_id":43517821124652,"sku":"C04-018-03010-1","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-pf4630-bbright-to-bb30-ceramic-bottom-bracket-2145640.jpg?v=1771298647","url":"https:\/\/ricycles.com\/products\/rotor-pf4630-bbright-to-bb30-ceramic-bottom-bracket","provider":"RA Cycles","version":"1.0","type":"link"}