Shimano Sora 3400 Rear Derailleur

This is a rear derailleur that is compatible with 9-speed drivetrains.
It has an advanced light action for low-friction shifting up or down the block and a wide link design for increased rigidity and precise gear shifts.
It also has 11-tooth pulleys with alloy bushings for reduced pulley wear, reduced chain noise and smooth-running performance.
It has a 31 tooth total capacity and a rear sprocket size range of 11-27T.