CeramicSpeed Ceramic Alloy Coated Derailleur Pulleys - SRAM Eagle 14 12 Speed

The CeramicSpeed Ceramic Alloy Coated Derailleur Pulleys for SRAM Eagle 12-Speed are built for riders who want to extract every watt from a drivetrain that already works hard. The 14-tooth wide-narrow pulleys run on CeramicSpeed's coated hybrid ceramic bearings — Grade 3 Silicon Nitride balls seated in races finished with a metallic alloy coating three microns thick and 75% harder than standard hardened steel races.

That coating is the defining detail here. Where standard ceramic bearings are already measurably faster than steel, the coated races add a smoother, longer-lasting running surface — reducing friction further and extending service intervals. CeramicSpeed's own testing puts the efficiency gain of their Eagle pulleys over stock at 34.4%. The wide-narrow tooth profile requires correct initial alignment with the chain, but once set, it holds engagement reliably and reduces mechanical wear across the full cassette range. Available in Black or Gold anodized aluminum.

CeramicSpeed Ceramic Alloy Coated Derailleur Pulleys — Specs at a Glance

• Compatibility: SRAM Eagle 12-speed derailleurs
• Pulley tooth count: 14T
• Bearing type: Coated hybrid ceramic — Grade 3 Silicon Nitride balls, alloy-coated steel races
• Race coating: 3-micron metallic alloy layer, 75% harder than hardened steel
• Pulley material: Anodized aluminum — Black or Gold