specialized giant cube cannondale Mavic Castelli endura altura
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  • Product Information
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  • Derailleur/Mech Guide
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  • Product Description

    Key Features:
    • TX800 mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choice
    • Oversize 13-tooth tension and guide pulleys to reduce noise and wear
    • Top normal spring for use with Rapidfire shifters
    • 8-speed compatible
    • For use with 28 to 34 tooth low rear sprockets, total capacity 43 teeth