Shimano DuraAce Crankset, chainrings need replacing. Very lightweight.
Y1KY08000 Shimano FC-7900/FC-9000 Crank Arm Fixing Bolt A-Type 8.5mm
Crank Arm Preload Tool – TL-FC16 Compatible for Shimano Hollowtech II Cranks
Shimano Sora groupset Cranks, Bottom Bracket, Shifters, Brakes, Derailleurs
Shimano Caliper Brake Recessed Back Nut 105 Tiagra Ultegra DuraAce Sora Claris