Shimano Acera - 7/8 Speed SGS Rear Mech - Black
- Available in silver or black
- Acera mountain bike rear derailleur featuring advanced technology for a wide gear choice
- Megapulley system uses oversize 15-tooth tension pulley and 13-tooth guide pulley to reduce noise and wear
- SmartCage short pulley cage offers larger gearing capacity that accommodates MegaRange super-low gear and gives good ground clearance
- Extension spring and low-friction fluorine-coated link pivot bushings result in a light shifting action
- IG and HG chain, 7- and 8-speed compatible