Shimano CAMBIO Acera RD-M3020-SGS 7/8V

The Shimano Acera RD-M3020 rear derailleur features Double Servo technology to provide smooth precise shifting and helps you ride challenging terrain with fewer interruptions.Double Servo mechanism enables the rear derailleur to move in an optimum pathVersatile performance and wide compatibilitySGS Long cageItem SpecificationsRear Der/Shifter CompatibilityShimano MountainRear Derailleur Mount Type10x1 StandardDrivetrain Speeds8Drivetrain Speeds7Chain Wrap Capacity (teeth)45Cage LengthLongColorBlackkeyword search3020.