• Derailleur J Lock Tool installed on a mountain bike rear derailleur, holding the cage retracted during maintenance

    Derailleur J Lock Tool – Cage Lock Out Tool for Trek and Specialized

    $13.98

    Derailleur J Lock Tool for mountain bikes. Holds the rear derailleur cage in a retracted position to make wheel removal, chain service, and drivetrain maintenance easier.

    ✔ Confirmed compatible with Shimano XTR, Deore XT, Deore and SLX
    ✔ Confirmed compatible with Specialized Stumpjumper using GX Eagle, X0 Eagle, or XX Eagle Transmission AXS
    ✔ Confirmed compatible with Trek Procaliber

    Fit guarantee included—if it doesn’t fit your setup, contact us.

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