Wolf Tooth GCX XX1/X01 Replacement Cog 46T Black

Wolf Tooth GCX XX1/X01 Replacement Cog 46T Black. GCX cogs replace the largest cog on SRAM 11-speed XD cassettes for extra durability and to lengthen the cassettes life.GCX cogs replace the largest cog on SRAM 11-speed XD cassettes for extra durability and