DURA-ACE Bottom Bracket - Press Fit - HOLLOWTECH II - 86.5 mm shell width With an advanced seal construction for smoother rotation, the DURA-ACE is still lightweight at 54 grams. Bottom…
With reliable Shimano bearings and seals, the Shimano BB72 bottom bracket has a long service life. Optimum power transfer Lightweight maintains efficiency 14 g lighter weight and half the…