{"product_id":"t47-bottom-bracket-86mm-dub-29mm-internal-bearing-for-road-road-wide","title":"T47 Bottom Bracket — 86mm, DUB (29mm), Internal Bearing- For Road \u0026 Road-Wide","description":"\u003cstyle\u003e\n  .bb-pdp { font-family: inherit; font-size: inherit; color: inherit; }\n  .bb-pdp h4 { font-size: 16px; font-weight: 700; margin: 28px 0 8px; border-bottom: 1px solid #e0e0e0; padding-bottom: 4px; }\n  .bb-pdp p { margin: 0 0 12px; }\n  .bb-pdp ul { margin: 0 0 12px; padding-left: 22px; }\n  .bb-pdp li { margin-bottom: 5px; }\n  .bb-pdp a { color: #0055cc; }\n  .bb-pdp .note { font-style: italic; font-size: 13px; color: #555; }\n  .bb-divider { border: none; border-top: 1px solid #e5e5e5; margin: 32px 0; }\n  .bb-grid { display: flex !important; flex-wrap: wrap; gap: 12px; align-items: stretch; margin: 12px 0 20px; }\n  .bb-card { flex: 1 1 250px; min-width: 230px; box-sizing: border-box; border: 1px solid #ddd; border-radius: 10px; padding: 14px 16px; }\n  .bb-card strong { display: block; font-size: 14px; margin-bottom: 6px; }\n  .bb-card ul { margin: 6px 0 0; padding-left: 18px; font-size: 13px; color: #444; }\n  .bb-callout { border-left: 3px solid #111; padding: 14px 20px; margin: 20px 0; background: #fafafa; font-size: 13px; color: #444; line-height: 1.6; }\n\u003c\/style\u003e\n\u003cdiv class=\"bb-pdp\"\u003e\n\u003cp\u003e\u003cstrong\u003eThreaded. Serviceable. Quiet.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA T47 bottom bracket for frames with an 86mm threaded shell, built around SRAM's DUB 29mm spindle standard. Internal bearing design, aluminum alloy construction, 108 grams, with the full spacer kit for both Road and Road Wide chainlines in the box.\u003c\/p\u003e\n\u003chr class=\"bb-divider\"\u003e\n\u003ch4\u003eWhy T47 threaded beats press-fit\u003c\/h4\u003e\n\u003cp\u003ePress-fit bottom brackets are pressed into the frame with an interference fit. When that fit is even slightly off — from manufacturing tolerance, from a frame that's flexed, from a bearing cup that's worked loose over a season — you get creaking. And press-fit creak is famously hard to chase down, because the noise travels and the fix usually means pulling the whole thing ba\u003cimg\u003eck out with a press.\u003c\/p\u003e\n\u003cp\u003eT47 threads in. A threaded interface doesn't rely on tolerance to stay put; it relies on threads, which either engage or don't. The result is a quieter bottom bracket, better bearing alignment, and a longer service life because the bearings aren't being subtly distorted by an imperfect press.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIt's also the standard you can service yourself.\u003c\/strong\u003e Threaded cups install and remove with a standard bottom bracket tool. No press, no drift, no shop visit. If you're the kind of rider who'd rather do it on your own bench, this is the standard you want.\u003c\/p\u003e\n\u003cp\u003eT47 also uses a larger shell diameter than a traditional BSA threaded bottom bracket, which means larger bearings and more room for a fat spindle — the reason it's become the standard of choice on modern carbon and titanium frames.\u003c\/p\u003e\n\u003chr class=\"bb-divider\"\u003e\n\u003ch4\u003eFitment — three things have to match\u003c\/h4\u003e\n\u003cdiv class=\"bb-grid\"\u003e\n\u003cdiv class=\"bb-card\"\u003e\n\u003cstrong\u003e1. Your frame shell\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eT47 threaded\u003c\/strong\u003e, 47mm inner diameter\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e86mm wide\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eNot compatible with BSA, PF86, BB86, BB30, or PF30 shells\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bb-card\"\u003e\n\u003cstrong\u003e2. Your crank spindle\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSRAM DUB, 29mm\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eNot compatible with 24mm (Shimano, GXP) or 30mm spindles\u003c\/li\u003e\n\u003cli\u003eWorks with DUB and DUB Wide cranks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bb-card\"\u003e\n\u003cstrong\u003e3. Your chainline\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eRoad: 45mm\u003c\/li\u003e\n\u003cli\u003eRoad Wide: 47.5mm\u003c\/li\u003e\n\u003cli\u003eSpacers for both are included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"note\"\u003eIf you're unsure about your shell standard, measure the width of your bottom bracket shell and look for threads inside it. A T47 shell is visibly larger than a BSA shell and has threads all the way through.\u003c\/p\u003e\n\u003chr class=\"bb-divider\"\u003e\n\u003ch4\u003eRoad and Road Wide, both covered\u003c\/h4\u003e\n\u003cp\u003eSRAM's road cranks come in two chainlines, and which one you have determines how the bottom bracket gets spaced.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Road — 45mm chainline.\u003c\/strong\u003e The setup on most road bikes and shorter-chainstay all-road frames. Uses the 1mm, 2mm, and\/or 3mm spacers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoad Wide — 47.5mm chainline.\u003c\/strong\u003e The wider setup for gravel frames with longer chainstays and bigger tire clearance. Uses the 2.5mm and 5.5mm spacers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll five spacers ship in the box, so you can run either configuration and change your mind later if you swap cranksets.\u003c\/p\u003e\n\u003cdiv class=\"bb-callout\"\u003e\n\u003cstrong\u003eWhich do you have?\u003c\/strong\u003e If your crank is a Wide or XPLR model, or your frame's spec sheet calls for a 47.5mm chainline, you want the Road Wide spacing. Otherwise you're on standard Road. Follow SRAM's spacing chart for your specific crankset rather than guessing — chainline directly affects shift quality and chain wear.\u003c\/div\u003e\n\u003chr class=\"bb-divider\"\u003e\n\u003ch4\u003eInternal bearing design\u003c\/h4\u003e\n\u003cp\u003eThe bearings sit inboard, inside the shell, rather than hanging outboard of it. On an 86mm shell that's the right arrangement — you get a wider bearing stance for better support of the spindle without adding width at the cranks, so Q-factor stays where the frame designer intended.\u003c\/p\u003e\n\u003cp\u003eSealed cartridge bearings keep water and grit out. Aluminum alloy cups with composite internals keep the weight at 108g.\u003c\/p\u003e\n\u003chr class=\"bb-divider\"\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e T47 threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShell inner diameter:\u003c\/strong\u003e 47mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShell width:\u003c\/strong\u003e 86mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle compatibility:\u003c\/strong\u003e SRAM DUB, 29mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing type:\u003c\/strong\u003e Internal, sealed cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum alloy with composite internals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChainline:\u003c\/strong\u003e Road (45mm) and Road Wide (47.5mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpacers included:\u003c\/strong\u003e 1mm, 2mm, 3mm (Road) · 2.5mm, 5.5mm (Road Wide)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e approximately 108g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"bb-divider\"\u003e\n\u003ch4\u003eInstallation\u003c\/h4\u003e\n\u003cp\u003eYou'll need a bottom bracket tool that matches the cup interface and a torque wrench. Grease the frame threads before installation — this is the single most effective thing you can do to prevent creaking and to make removal possible in two years.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote the thread direction.\u003c\/strong\u003e Like most threaded bottom brackets, the drive side is reverse-threaded. Turning it the wrong way with force is how threads get damaged.\u003c\/p\u003e\n\u003cp\u003eSet your spacers before final torque, following SRAM's spacing chart for your crankset and chainline. Then set the crank's preload collar properly — not so tight that there's drag, not so loose that there's play. Both will shorten bearing life.\u003c\/p\u003e\n\u003cp\u003eIf you aren't set up for bottom bracket work, this is a quick job at any shop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"State Bicycle Co.","offers":[{"title":"Default Title","offer_id":44261922570327,"sku":"751503808548","price":27.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0232\/3305\/files\/T47BottomBracket_86mm_DUB_29mm_InternalBearing-ForRoad_Road-Wide.png?v=1788994317","url":"https:\/\/www.statebicycle.com\/en-gb\/products\/t47-bottom-bracket-86mm-dub-29mm-internal-bearing-for-road-road-wide","provider":"State Bicycle Co.","version":"1.0","type":"link"}