Campagnolo Super Record 12 Speed Rear Derailleur, One Size, Black

Super Record 12X2 Speed rear derailleur: pure technology. Functionality combines with the highest quality materials and exceptional weight to generate unparalleled performance Constant precision: On rough roads, the spring positioned between the upper body and the pivot absorbs the vibrations, ensuring the chain always rests properly on the sprockets The pulley wheels on the 12-tooth derailleur cage allow the chain to move more smoothly The initial position of the rear derailleur can be adjusted to suit any cassette Easy wheel replacement: The rear derailleur is positioned further back, making it easier to slide the wheel out and replace it