Danger Boy 888 Direct Mount Stem Dangerboy Stems are precision machined (CNC) from solid block 6061 T6 & 7075 aircraft grade aluminum. Internel Bore lightens the stems without compromising strength. All stems come with our trademark six-shooter steer tube cap. Stack Height: 0mm Length: 47mm Rise: 0 deg. Bore: 31.8mm Weight: 244g