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 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 polyamide for durability and light weight
Three spring tension settings allow you to customize performance and reduce chain drag
Fits 10-50 tooth cassette range
Coated bearing races increase bearing service life by increasing hardness of race and reducing corrosion