Description: Shimano LX M580 Rear Mech. The RD M580 LX derailleur features a low-normal (Rapid Rise) return spring for easier shifting to low gears. Combined with a wide link design- you can expect a long service life and smooth shifting from this derailleur Rubber bumper on derailleur body reduces noise and adds to durability Compatibility: 9 speed drivetrains Weight: 311g (SGS) 278g (GS)
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