Replace the biggest ring of your 11-speed cassette with the Wolf Tooth Components Giant Cog for SRAM XX1/XO1. Whether it’s worn-out from grueling climbs or you simply require extra low-end for the steepest of climbs, the Giant Cog has you covered with its 42t, 44t, and 46t options. It’s constructed of 7075-T6 aluminum for optimal strength at a relatively low weight. Plus, its slew of bright colors adds some shiny bling to your favorite trail steed or enduro monster.