FSA MegaExo BB-6000 Road Bicycle Bottom Bracket
MegaExo. Composite center sleeve with double o-ring seals. External oversized cartridge bearings. Forged and CNC-machined external bearing cups. Finish: Anodized cups. English threading 68 and 73mm (BC-1.37 x 24T). Italian threading 70mm (M36 x 24T). Fits: Energy, Gossamer. Weight: 100g.