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Whether the biggest cog on your X01 or XX1 is worn out or you just like a flash of a little more cassette color, the Wolf Tooth GCX 42 sprocket is exactly what you need. Shifting performance and durability match the stock part, and install should only take 5-10 minutes.



  • Only compatible with X01 and XX1 cassettes, XG1195 or XG1199
  • NOT compatible with any other cassettes

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Tech Specs

    Weight: 83g
    Material:  7075-T6 aluminum
    Made in the USA

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