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
Robust cage crafted from polyamide and carbon fiber for durability and light weight
Compact cage design allows the use of the same length chain as stock pulleys
Two spring tension settings allow customized setup based on ride conditions
Only compatible with 1X specific derailleurs - XTR M9100-SGS/GS and Shimano XT M8100-SGS
Coated bearing races increase bearing service life by increasing hardness of race and reducing corrosion