microSHIFT R8 Rear Derailleur 8/9 Speed Short cage
R-series rear derailleurs are designed to work with 7, 8 ,9, and 10-speed Shimano-compatible road shifters. These R8 rear derailleurs have composite and steel parts that weigh more but have the same durability and performance as R9 and R10.
Steel pulley cage for extra durability
Not compatible with Shimano Tiagra 4700 road system
Short cage for double 28T setup