Shimano RD-RD-M591 Deore MTB SGS, Cambio Posteriore , Nero, 9V : Amazon.it: Sport e tempo libero
Amazon.com : Altus Rear derailleur offering Crisp Performance on- and Off-Road for 9-Speed drivetrains. Wide Link Design Increases Design and Service Life. 11-Tooth Pulleys for Reduced Pulley wear and Chain : Sports
Amazon.com : SHIMANO Acera Rear Derailleur, Black, 30 x 10 x 10 cm : Sports & Outdoors