microSHIFT R8 Rear Derailleur - 89 Speed Long Cage Black. 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
| Largest Cog | 28 |
| Color | Black |
| Rear Der/Shifter Compatibility | Shimano Road |
| Rear Derailleur Mount Type | 10x1 Standard |
| Drivetrain Speeds | 8 |
| Drivetrain Speeds | 9 |
| Weight | 230 |
| Chain Wrap Capacity (teeth) | 39 |
| Cage Length | Long |
