{"product_id":"ceramicspeed-ceramic-alloy-derailleur-pulleys-sram-1-11-speed","title":"CeramicSpeed Ceramic Alloy Derailleur Pulleys - SRAM 1-11 Speed","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eCeramicSpeed Ceramic Alloy Derailleur Pulleys for SRAM 1-11 Speed\u003c\/strong\u003e were developed specifically to match the tooth profile demands of SRAM's 1x drivetrains — and then improve on the stock units in the areas that matter most: longevity and friction. The pulley bodies are CNC-machined aluminum with cutouts under the teeth for both mud clearance and weight reduction. Pressed into each pulley are CeramicSpeed's hybrid ceramic bearings — ceramic balls running in hardened steel races.\u003c\/p\u003e\n\n\u003cp\u003eCeramicSpeed uses Grade 3 Silicon Nitride balls, which the company states are 400% smoother and 128% harder than standard steel balls, and 58% lighter. Compared to standard ceramic balls, they're over 100% smoother and 15% harder. The balls are assembled in dust-free clean rooms and verified before final assembly. The result is a bearing designed to last three to five times longer than conventional sealed units — and a set of pulleys that, in third-party friction testing, measured a frictional drag of just 0.033 watts. Installation requires only a 2.5mm Allen key; the existing SRAM spacers are reused, and the upper pulley's slightly narrower profile reduces the precision needed for centering.\u003c\/p\u003e\n\n\u003ch3\u003eCeramicSpeed Ceramic Alloy Derailleur Pulleys Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e SRAM 1x11 speed rear derailleurs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePulley material:\u003c\/strong\u003e CNC-machined aluminum with under-tooth cutouts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearing type:\u003c\/strong\u003e Hybrid ceramic — Grade 3 Silicon Nitride balls in hardened steel races\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClaimed bearing service life:\u003c\/strong\u003e 3–5x longer than conventional sealed bearings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation tool:\u003c\/strong\u003e 2.5mm Allen key\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"CeramicSpeed","offers":[{"title":"Default Title","offer_id":43705649365036,"sku":"101691","price":269.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/ceramicspeed-ceramic-alloy-derailleur-pulleys-sram-1-11-speed-4881129.jpg?v=1771301707","url":"https:\/\/ricycles.com\/products\/ceramicspeed-ceramic-alloy-derailleur-pulleys-sram-1-11-speed","provider":"RA Cycles","version":"1.0","type":"link"}