Next-generation pulley wheels, designed to optimize transmission performance. Made with full-ceramic bearings (entirely ceramic), they ensure exceptional smoothness by reducing friction to an absolute minimum. The component is developed to run dry and minimize maintenance interventions.

Installation and Maintenance:

Chain: It is not necessary to modify the chain length (it is possible to keep the same number of links as the original configuration). However, to ensure optimal performance, it is recommended to consider replacing the chain at the time of installation, depending on its wear condition.
Longevity and lubrication: The robust design features full-ceramic bearings protected by special aluminum covers, designed to maximize durability over time and minimize maintenance needs. The system operates entirely dry: no grease is required.
Cleaning: Composition completely immune to oxidation. In case of dirt buildup between the covers and bearings during use, a simple wash with water or degreaser is sufficient.
Important warning: NEVER apply any type of lubricant to the dry bearings.

Technical Specifications:

Compatibility:
Shimano Ultegra (R8150) / 105 (R7100, R7150) 12-speed.
Shimano Ultegra (R8000, R8050) / Dura-Ace (R9100, R9150) / 105 (R7000) 11-speed.
Shimano GRX 812 / 817 11-speed.
Pulley material: 7075 Aluminum.
Bearing type: Full-ceramic dry bearings (cage and balls entirely ceramic).
Weight: 23 g.
Warranty: 4 years (valid on aluminum pulleys and ceramic bearings).