CeramicSpeed Ceramic Alloy Derailleur Pulleys - Shimano 11 Speed

Friction is watts you don't get back. The CeramicSpeed Ceramic Alloy Derailleur Pulleys for Shimano 11-speed address one of the most overlooked sources of drivetrain drag — the two small wheels spinning inside your rear derailleur — with CNC-machined aluminum bodies and hybrid ceramic bearings pressed into hardened steel races.

CeramicSpeed uses Grade 3 Silicon Nitride balls, manufactured to a surface finish and roundness tolerance that results in significantly lower rolling resistance than standard steel balls. The aluminum pulley bodies are cut with clearance pockets beneath the teeth to shed debris and reduce weight, and they're built to outlast plastic replacements by a wide margin. According to CeramicSpeed, the bearings are designed to last three to five times longer than conventional sealed races — service is straightforward with a drop of thin oil at the seal edge when needed. Installation requires nothing more than a 3mm hex key.

CeramicSpeed Ceramic Alloy Derailleur Pulleys Specs at a Glance

• Compatible with all Shimano 11-speed rear derailleurs
• CNC-machined aluminum pulley bodies with debris-clearing cutouts
• Hybrid ceramic bearings — Grade 3 Silicon Nitride balls in hardened steel races
• Available in Black or Red
• 3mm hex key installation