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Products > Components - Rear Derailers > shimano acera rear mech
shimano acera rear mech
Oversize 13-tooth tension and guide pulleys to reduce noise and wear Extension spring and low-friction fluorine-coated link pivot bushing result in a light shifting action Top normal spring for use with Rapidfire shifters IG and HG chain, 7- and 8-speed compatible For use with 28 to 34 tooth low rear sprockets, total capacity 43 teeth
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