5 pieces (SRAM XX1 Eagle 12-Speed Trigger Shifter with Discrete Clamp, Black, X01 Eagle Carbon DUB 148 DUB 170 or 175mm Direct Mount 32t Sync 2 Crankset, Black, XG-1295 Eagle, 10-50 12 Speed Cassette, Black, PC-XX1 Eagle Hollow-Pin chain, and XX1 Eagle 12-Speed Type 3 Rear Derailleur). Needed Items: Bottom Bracket