{"product_id":"shimano-dura-ace-bb-r9100-bottom-bracket","title":"Shimano Dura-Ace BB-R9100 Bottom Bracket","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano Dura-Ace BB-R9100 Bottom Bracket\u003c\/strong\u003e is the threaded bottom bracket built around Shimano's 24mm spindle standard — a straightforward, reliable interface that keeps the drivetrain stiff and the bearings well-protected. External cups house sealed ball bearings, with the wide bearing spacing designed to maximise stiffness at the crank-to-frame junction where torsional loads are highest.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in both English (68mm) and Italian (70mm) thread standards, the BB-R9100 is compatible with any Shimano 24mm thru-axle crank — including current and previous generations of Dura-Ace, as well as Ultegra and 105. Each cup is marked with directional arrows to take the guesswork out of installation. The unit weighs 65g, keeping the overall drivetrain package light without compromising durability.\u003c\/p\u003e\n\n\u003ch3\u003eShimano Dura-Ace BB-R9100 Bottom Bracket Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShell compatibility:\u003c\/strong\u003e English (68mm) or Italian (70mm) threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle compatibility:\u003c\/strong\u003e 24mm thru-axle Shimano cranks\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearing type:\u003c\/strong\u003e Sealed external cup ball bearings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 65g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"English","offer_id":43594279977004,"sku":"IBBR9100B","price":52.0,"currency_code":"USD","in_stock":true},{"title":"Italian","offer_id":43594280009772,"sku":"IBBR9100I","price":52.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-dura-ace-bb-r9100-bottom-bracket-5695544.jpg?v=1771294693","url":"https:\/\/ricycles.com\/products\/shimano-dura-ace-bb-r9100-bottom-bracket","provider":"RA Cycles","version":"1.0","type":"link"}