Monobloks DURA-ACE SM-BB92-41B Road Press-Fit 86.5mm Shimano ISMBB9241B (ISMBB9241B)

Bottom bracket Shimano DURA-ACE SM-BB92-41B

Bottom bracket with small ball bearings for lightweight
Advanced seal construction for smoother rotation
Weight: 54 g
Press-Fit
HOLLOWTECH II
Shell Width: 86mm
BB shell diameter: 41 mm

HOLLOWTECH II BB - outboard bottom bracket bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer.
Press-Fit BOTTOM Bracket - to meet customer needs in the best possible way, SHIMANO has developed the press-fit bottom bracket, staying focused on our final goal: total performance in pedaling. The bottom bracket axle is steadily supported by the wide placed bearings on the basis of HOLLOWTECH II technologies providing highly-efficient power transfer.