MegaExo: an integrated crank/BB system with oversized 24mm O.D. splined CroMoly BB axle, oversized external cartridge bearings and alloy bearing, weights include BB
Semi-solid CNC-machined AL-7075-T6 chainrings, ramped and pinned and Torx T-30 chainring bolts
English thread 68mm shell compatible. 70mm Italian cups sold separately