A light and durable rear derailleur for top level road use
The Features of the Shimano Ultegra GS Medium Cage Rear Mech RD6600GS are:- Advanced Wide Link design rear derailleur
- Super stiff for fast and accurate changes across the cassette
- Large 11 tooth pulleys increase service life and reduce noise
- Sealed bearing tension is smooth and durable
- Super light shift action
- Ultegra finish
- Compatible with 8-, 9-, and 10-speed drivetrains