Shimano RD-5701 10sp 32T Rear Derailleur Black

10-speed 105 wide link rear derailleur medium cage - GS. The Advanced Wide Link design increases rigidity and shifting performance, and it comes super stiff for fast and accurate changes across the cassette. Large 11 tooth pulleys increase service life and reduce noise. Featuring super light shift action and is compatible with 8, 9, and 10-speed drivetrains.