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 15-tooth upper and 19-tooth lower, titanium pulley wheels with Grade 3 Silicon Nitride balls
Titanium pulley wheels are 3D-printed and hollow for additional weight savings and durability
Robust cage crafted from polyamide and carbon fiber for durability and light weight
Two spring tension settings allow customized setup based on ride conditions
Fits cassettes from 10 to 36-tooth
Coated bearing races increase bearing service life by incre