CeramicSpeed Shimano 11-Speed Pulley Wheels (Raw) (Coated) (Titanium) - CSPW30603010
CeramicSpeed Shimano 11-Speed Pulley Wheels (Raw) (Coated) (Titanium) - CSPW30603010, Pulley wheels that reduce friction, last 3-5 time longer than stock high-end pulleys, and reduce overall drag within the drivetrain. Features: Grade 3 Silicon Nitride balls Hardened races Reinforced polyamide cage and non-contact seals Hand built in Denmark Specs: Drivetrain Speeds11 Fits BrandShimano