Oneup components shark expander sprocket cog cage kitoneup your shimano 11 speed drivetrain with the oneup shark expander sprocket cog cage kit for xt 11 42 cassettes oneup components shark 50t sprocket and cage is part of the widest 11 speed 1x system ever created the 50t upgrade increases the stock shimano 11 speed 11 42 cassette range by 19 the 50t provides more total cassette range not just an easier granny gear adding the oneup 50t sprocket lets you increase your 1x11 front chai