MICROSHIFT Rear Derailleur - R9 RD-R42S - 2 x 9/10 Speed - Short Cage - 11-28T (Shimano Road) Black

microSHIFT R9 rear derailleurs are designed to work with 9-speed Shimano-compatible road shifters. With a competitive weight and an aluminum bracket body and outer link, R9 marries form and function beautifully

Weight saving aluminum bracket body and outer link

Steel pulley cage for extra chain-rub durability

For use with Shimano 9-speed road systems

Not compatible with Shimano Tiagra 4700 road system

Largest Cog: 25-28T (short and long cage); 30-34T (medium cage)

Rear Derailleur Mount Type: 10x1 Standard

Chain Wrap Capacity (teeth): 39T (medium and long); 33T (short)

Cage Length: choose; Short, Medium, or Long

Rear Der/Shifter Compatibility: Shimano Road

Drivetrain Speeds: 9

Weight: 291g.

Color: Black