BBB RollerBoys Derailleur Pulleys

##BBB RollerBoys Derailleur Pulleys The BBB RollerBoys Derailleur Pulleys are a set of replacement jockey wheels constructed from a strong and durable composite material. **Please note:** 11T SRAM – Compatible with the following SRAM systems: 9.0SL (?01/?02); 9.0 (?03); X.9 (?04); X.O; pre 2011 Force and Rival only.