Wolf Tooth 25mm B Screw

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Ships from our Melbourne Warehouse

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The product is required for Shimano rear derailleurs when using the GC 40 and GC 42 extender cogs.

This is an inexpensive solution for extender cogs, however, we recommend using the Goatlink.  The Goatlink eliminates the need for this product and will result in better shifting performance.  

To view the Goatlink, Click here. 


SKU 812719020152
Brand Wolf Tooth