microSHIFT R10 Rear Derailleur - 10 Speed Short Cage Shimano Compatible Black. R-series rear derailleurs are designed to work with 7 8 9 and 10-speed Shimano-compatible road shifters.  These R10 aluminum rear derailleurs are lightweight precision CNC-machined robust and can get any bike back on the road.Light weight all aluminum construction 
Steel cage 
Compatible with Shimano 7 8 9 and 10-speed road systems 
Not compatible with Shimano Tiagra 4700 road system 
- TECH SPECS
| Largest Cog | 28 | 
| Color | Black | 
| Rear Der/Shifter Compatibility | Shimano Road | 
| Rear Derailleur Mount Type | 10x1 Standard | 
| Drivetrain Speeds | 10 | 
| Weight | 218 | 
| Chain Wrap Capacity (teeth) | 33 | 
| Cage Length | Short | 
 
               
    