CeramicSpeed OSPW X Pulley Wheel System for Shimano GRX/RX 2×11 – Coated Races, Alloy Pulley, Carbon Cage, Black Fashion

The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low-friction bearings and unique overall design.

• Features 13-tooth upper and 19-tooth lower, aluminum pulley wheels with Grade 3 Silicon Nitride balls
• Robust cage crafted from polyamide and carbon fiber for durability and light weight
• Coated bearing races increase bearing service life by increasing hardness of race and reducing corrosion
• Compatible with Shimano GRX 810 & GRX 815, Shimano Ultegra RX 800 & Ultegra RX 805
• Cassette compatibility up to 11-36
• Four spring tension settings allow customized setup based on ride conditions
• CeramicSpeed products with coated bearings include a lifetime warranty