Shimano RD-M3020 Acera 8/7Spd Rear Derailleur Black x2 Zero Bead Hook 4mm FlatTop

Zero Bead Hook 4mm FlatTop Design

Improved sealing to stop dirt ingress and to reduce drag

SRAM has redefined road gearing by optimizing the front chainring size and expanding the rear cassette range while preserving a 13-tooth delta between the chainrings

Smart suspension

Ceramic coating for increased drive chain protection

Shimano RD-M3020 Acera 8/7Spd Rear Derailleur Black x2 Zero Bead Hook 4mm FlatTopThe SHIMANO ACERA M3020 8 rear derailleur with Double Servo technology helps you ride challenging terrain with fewer interruptions. Double Servo construction for smooth and precise shifting Versatile performance and wide compatibility Max. low sprocket: 40T Total capacity: 45T