Wolf Tooth Components 25mm Long B-Screw (For Wide Range Cassettes)

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Looking to get a little extra distance so that your derailleur clears your 40 or 42 tooth cog? Look no further. When using the GC 40 with a Shimano rear derailleur, a longer B-screw may be needed.  A longer b-screw is almost always needed when using the GC42 with a Shimano rear derailleur.   


  • M4 x 24mm screw for that extra little push
Note: You will not need this longer B-screw with the Goatlink.  We strongly recommend the GoatLink for your Shimano rear derailleur when using the GCs, as it will improve long term shifting and drivetrain life!  Be sure to check you have a compatible rear derailleur per the details on the Goatlink product page.

This product was added to our catalog on August 29, 2017