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, Cerakote coated 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
• Four spring tension settings allow customized setup based on ride conditions
• Only compatible with the ‘2X-specific’ GRX 810, GRX 815, as well as the RX800, and RX805 derailleurs
• Cassette compatibility up to 11-36t
• CeramicSpeed products with coated bearings include a lifetime warranty