Cold-forged, monocoque aluminum arms with integrated MegaExo BB and patented chromoly pedal insert. MegaExo Quad external BB with four cartridge bearings and a 24mm chromoly spindle. CNC machined 7075/T6 22/32t chainrings with polycarbonate outer bash ring. Two tone black anodized with 3D forged logo. 1230g. Features: Hollow forged AL-6061-T6 crankarms; AL-7075-T6 spider CroMoly inner ring and bolts; AL-7075-T6 middle ring; PC bashring Integrated MegaExo Quad BB with double row cartridge bearings CroMoly pedal inserts Bash rings are polycarbonate (PC)