SRAM GX Eagle 12 Speed 10-52T MTB Kit 6 Pcs, Trigger Shifter. SRAM X01 Eagle 12 Speed 10-52T MTB Kit 4 Pcs, Trigger Shifter, Red. SRAM GX Eagle 12 Speed 10-52T MTB Kit 4 Pcs, Trigger Shifter. Works with ALL cable actuated MTB levers.