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.Coated bearing races increase bearing service life by increasing hardness of race and reducing corrosion. Cerakote coated aluminum pulley wheels. Only compatible with XX1 Eagle AXS and X01 Eagle AXS (electronic). Not designed for use with Eagle Mechanical. CeramicSpeed products with coated bearings include a lifetime warranty. Features a 14-tooth upper and 18-tooth lower, aluminum pulley wheels with Grade 3 Silicon Nitride balls to provide absolute optimization of the rear derailleur. The narrow wide tooth profile ensures durable chain retention. Robust cage is crafted from carbon reinforced.
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