SRAM SX/GX Eagle 1 x 11 Boost Groupset - 11-42TSRAM SX GX Eagle 1 x 11 Boost Groupset 11 42T Day in, day out, this is the Eagle ecosystem at its best. SX & GX Eagle combine the full featured capability of Eagle technologies, in a group that realises the potential within every build. Requirements: HG (Hyperglide) freehub body BSA Threaded BB to fit SRAM Power Spline 73mm bottom bracket In the Box: 1 x SRAM GX 1 x 11 Speed Rear Derailleur Long Cage 1 x SRAM GX Trigger Shifter 11 Speed Black 1 x SRAM