{"product_id":"sram-dub-bsa-68-73mm-55mm-chainline-threaded-cups","title":"SRAM DUB Threaded English (BSA) Bottom Bracket — 68\/73mm Shell, 55mm Chainline, Sealed Bearings","description":"\u003cp\u003e\u003cstrong\u003eThe SRAM DUB English (BSA) 68\/73mm bottom bracket is a sealed, threaded unit built for SRAM Boost cranksets with a 55mm chainline to deliver reliable, low-maintenance power transfer on English‑threaded frames.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you run a SRAM Boost crankset and your frame uses English (BSA) threads at either 68mm or 73mm shell width, this bottom bracket gives a straightforward, durable interface between the oversized DUB spindle and your frame. It uses sealed steel cartridge bearings and SRAM’s Gutter Seal Technology to keep contamination out, while the DUB spindle design simplifies compatibility across multiple crank standards.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes the DUB spindle different from other bottom bracket spindles?\u003c\/h3\u003e\n\u003cp\u003eThe DUB spindle is intentionally oversized and standardized by SRAM to reduce complexity across crank and bottom bracket pairings. That larger spindle diameter increases bearing engagement and stiffness where the crank meets the bearing, while allowing a single spindle standard to work with many frame and BB configurations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOversized DUB spindle improves bearing contact and stiffness.\u003c\/li\u003e\n  \u003cli\u003eSingle DUB standard reduces the number of model-specific parts needed.\u003c\/li\u003e\n  \u003cli\u003eWorks with multiple BB standards when paired with the correct cups or adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this BSA threaded bottom bracket resist dirt and water?\u003c\/h3\u003e\n\u003cp\u003eSRAM combines sealed cartridge bearings with Gutter Seal Technology to minimize ingress from the elements. The seals channel contaminants away from bearing contact points so bearings run cleaner for longer and require less frequent service.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSealed steel cartridge bearings keep lubrication contained and contaminants out.\u003c\/li\u003e\n  \u003cli\u003eGutter Seal Technology diverts grime away from bearing interfaces.\u003c\/li\u003e\n  \u003cli\u003eThreaded BSA cups offer a tight mechanical fit in the frame shell for added protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this bottom bracket fit my frame and crankset?\u003c\/h3\u003e\n\u003cp\u003eThis unit is built for English (BSA) threaded frame shells at 68mm or 73mm widths and for SRAM Boost cranksets specifying a 55mm chainline. Confirm your frame shell thread type and crankset chainline before purchase to ensure compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits BSA (English) threaded frames, 68mm or 73mm shell width.\u003c\/li\u003e\n  \u003cli\u003eDesigned for SRAM Boost cranksets with a 55mm chainline specification.\u003c\/li\u003e\n  \u003cli\u003eComes as threaded cups in black for a direct screw-in installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect from installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation is the typical screw‑in process for English threaded bottom brackets; use the appropriate tool and torque spec for your frame. After installation, the sealed bearings and seals reduce routine maintenance, but periodic checks for play and smooth rotation will extend service life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eScrew-in threaded cups require a BSA bottom bracket tool during install.\u003c\/li\u003e\n  \u003cli\u003eTorque to the manufacturer’s specification for a secure fit and best seal.\u003c\/li\u003e\n  \u003cli\u003eInspect for smooth rotation and absence of play; replace bearings if rough or loose.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Riders and mechanics looking for a low-maintenance, frame-specific solution to pair SRAM Boost cranksets with English-threaded MTB frames. Choose this bottom bracket if you need a durable, sealed unit tailored to a 55mm chainline and 68\/73mm BSA shell widths, and want simplified compatibility through SRAM’s DUB spindle standard.\u003c\/p\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this fit 68mm and 73mm BSA frames?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it is compatible with English (BSA) threaded frames in both 68mm and 73mm shell widths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this bottom bracket compatible with non‑SRAM cranks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It’s designed for SRAM DUB\/Boost cranksets with a 55mm chainline; non‑SRAM cranks may work only if they accept a DUB spindle.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SRAM","offers":[{"title":"Default Title","offer_id":48025834061985,"sku":"B09PC4X443","price":99.24,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/6532\/5729\/files\/sram-dub-bsa-front-packaging.jpg?v=1791362821","url":"https:\/\/canadiansporting.ca\/products\/sram-dub-bsa-68-73mm-55mm-chainline-threaded-cups","provider":"Canadian Sporting","version":"1.0","type":"link"}