microSHIFT R10 Rear Derailleur - 10-Speed Medium Cage Shimano Road Compatible Black. microSHIFT R10 rear derailleurs feature forged and CNC machined construction that pairs durability with a quality finish. This lightweight and lightweight rear derailleur is robust and designed to get any 10-speed Shimano Road compatible bike back on the road.

Forged and CNC machined aluminum construction is lightweight and rugged

Cage is crafted with steel for enhanced chain-rub durability

For use with Shimano 10-speed road systems

Not compatible with Shimano Tiagra 4700 road system