CeramicSpeed OSPW X Pulley Wheel System for Shimano XT/XTR 1x12 - Alloy Pulley, Carbon Cage, Black

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 pulley wheel and a 8-tooth lower pulley wheel 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