GCX cogs replace the largest cog on SRAM 11-speed XX1 or X01 XD cassettes for extra durability and to lengthen the cassettes life.Also offered in a 44T for expanded climbing range.
- GCX cogs replace the largest cog on SRAM 11-speed XX1 or X01 XD cassettes for extra durability and to lengthen the cassettes life;also offered in a 44T for expanded climbing range
