Wolf Tooth GCX XX1/X01 Replacement Cogs.
- GCX sprocket replaces the worn out stock 42T on your XX1 or X01 cassette with same shifting performance
- Detailed step-by-step instructions are available at www.wolftoothcomponents.com
- Made in the USA from 7075-T6 aluminum alloy
This product was added to our catalog on April 25, 2018