microSHIFT R8 8, 9 Speed Rear Derailleur

Reinforced joints for improved lateral stiffness Rear Der/Shifter Compatibility: Shimano Road (Not compatible with Shimano Tiagra 4700 road system) Setup: Short cage for double 28T Long cage for triple 28T Steel cage with steel outer link Cage Length: Short or Long Max Cog: 25t to 28t Chain Wrap Capacity: 33t (Short), 39t (Long) Rear Derailleur Mount Type: Standard Drivetrain Speeds: 8, 9 Published Weight: 225g (Short), 230g (Long) R-series rear derailleurs are designed to work with 8 and 9-speed Shimano-compatible road shifters. These R8 rear derailleurs have composite and steel parts for greater reliability.