Wolf Tooth CG42 Red Shimano - Russ Hays

Wolf Tooth CG42 Red Shimano

The GC42 cassette cog is so big that when machining the first batch, the machinist thought he made a mistake!  The GC line of cassette extender cogs allow you to modify your 10 speed cassette into a wide range cassette.  To achieve the optimal shifting, the GCs are optimized for Shimano or SRAM cassette. 

  • Compatible with several Shimano 10 speed cassettes
  • Compatible with all 10 speed chains
    • Note that you may need a longer chain that you currently have your bike
    • Chain stretch should be less than .5 when installing a new GC
  • Compatible with all 10 speed rear derailleurs except non-clutch type SRAM rear derailleurs model year 2012 and older
  • Can be run in 2x configuration with a long cage rear derailleur

*Not all on-line items are in store for immediate purchase. Please inquire as to status if concerned.