Shimano Rd-m310 Altus Rear Derailleur

Key features:altus mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choiceoversize 13 15-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 compatiblefor use with 28 to 34 tooth low rear sprockets, total capacity 43 teethsgs

Key features:altus mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choiceoversize 13 15-tooth tension and guide pulleys to