Shimano Rd-m3020 Acera Rear Derailleur Sgs

Key features:acera mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choiceoversize 13-tooth tension and guide pulleys to reduce noise and wearextension spring and low-friction fluorine-coated link pivot bushing result in a light shifting actiontop normal spring for use with rapidfire shiftersig and hg chain, 7- and 8-speed compatible

Key features:acera mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choiceoversize 13-tooth tension and guide pulleys to reduce