CeramicSpeed Pulley Wheels Coated, Alloy, Limited Edition Blue, Shimano
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Details
Pulley wheels that reduce friction, last 3-5 time longer than stock high-end pulleys, and reduce overall drag within the drivetrain.
- Grade 3 Silicon Nitride balls
- Hardened races
- Reinforced polyamide cage and non-contact seals
- Hand built in Denmark
- Precision machined aluminum pulleys
- Coated races increase bearing service life by increasing hardness of race and reducing corrosion
- Shimano 11-Speed