Ceramic Ball Bearing for Road Bike Wheel, 11T

【Smooth Performance】Experience smooth shifting performance thanks to derailleur pulleys equipped with oxidized ceramic ball bearings. These components minimize friction, providing seamless shifting on every climb, sprint, or long road ride, for both amateur and professional cyclists.
【Anti-Block Spring】The innovative spring structure prevents chain lock-up and link skipping, even during intense shifting under load. Urban cyclists and trail riders can shift with confidence, avoiding sudden chain drops and maintaining a quiet and stable drivetrain on rough roads.
【Wide Compatibility】Designed for 8-11 speed rear derailleurs with a 4-6mm axle, this 11T ceramic bearing pulley fits all guide and tension positions. Weekend mechanics and hobby builders can install it quickly, upgrading standard pulley systems with high-performance reliability. 【Machined Aluminum Body】Made from 6061 aluminum alloy with CNC machining, polishing, and anodizing, this lightweight idler pulley resists corrosion and wear. Touring and everyday cyclists benefit from a robust component that keeps the drivetrain smooth, ride after ride, without additional maintenance. 【Self-Lubricating Quiet Design】The self-lubricating oxide ceramic ball operates smoothly for reliable and quiet operation, reducing drivetrain noise on long rides and weekend outings. Cyclists can simply install and forget, with no need for frequent lubrication and a smoother pedal feel.