Shimano bottom bracket SM-BB71-41B - Press Fit and Hollowtech II
Shimano SM-BB71-41B is a press fit bottom bracket for the installation of a Hollowtech II compatible crank into a road frame with 86.5 mm case width.
Per usual with Hollowtech II, the bearings have a diameter of 24 mm, as this gives the best combination of rotational efficiency, stiffness, load capacity,
tightness and weight even with press fit bearings.
