OSPW X System for Shimano XT M8100/XTR M9100 12-Speed

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