microSHIFT R10 Rear Derailleur - 10 Speed, Medium Cage, Black/Silver

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 Compatible with Shimano 7, 8, 9, and 10-speed road systems Not compatible with Shimano Tiagra 4700 road system Product Specifics Rear Derailleur Mount Type: 10x1 Standard Rear Der/Shifter Compatibility: Shimano Road Cage Length: Medium Drivetrain Speeds: 10 Weight: 220 Color: Black/Silver Chain Wrap Capacity (teeth): 39 Largest Cog: 34 Today's Stock StatusCurrently not available UPC: Not available EAN: 4710495436067 Manufacturer Part Number: RD-R51M RD0217 167895-Q0-L