RD-M3020-8 REAR DERAILLEUR ACERA 7/8-SPEED BLACK NOT FOR 11-28T

The Shimano RD-M3020-8 Acera 7/8-Speed Rear Derailleur is a double Servo rear derailleur with smooth, precise shifting performance and wide-range capability. Double Servo technology helps you ride challenging terrain with fewer interruptions.

Features
Double Servo construction for smooth and precise shifting
Versatile performance and wide compatibility
Max. low sprocket: 40T
Total capacity: 45T
Does not work with 11-28T drivetrains