CeramicSpeed Pulley Wheels Shimano 11-Speed - 12 Tooth Narrow Wide Alloy BLK

CeramicSpeed pulley wheels reduce friction last 3-5 time longer than stock high-end pulleys and are designed to work with less drag.

Premium Grade 3 Silicon Nitride Ceramic balls

Hand built in Denmark

Drivetrain Speeds	11
Fits Brand	Shimano