CeramicSpeed OSPW Pulley Wheel System for SRAM Rival AXS - Alloy Pulley, Carbon Cage, Black EA Cage Assembly

Features a 15-tooth upper and 19-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 Hardened steel bearing races Two spring tension settings allow customized setup based on ride conditions Only compatible with SRAM Rival AXS 12-speed 36t cassette