Shimano SM-BB92-41B Hollowtech II Bottom Bracket | PressFit BB86

Shimano SM-BB92-41B Hollowtech II Bottom Bracket | PressFit BB86

Shimano SM-BB92-41B is a bottom bracket bearing designed for press-fit installation of Hollowtech II cranks into road bike frames with a bottom bracket shell length of 86.5 mm. The Hollowtech II technology signifies that the crank axle diameter is 24 mm, which increases stiffness and load capacity. This bottom bracket bearing is distinctive for its use of small ball bearings, which reduce weight. It is recommended for use with Dura-Ace series 11 or 12-speed cranks for optimal performance.

Shimano's Hollowtech II technology represents an advanced crankset and bearing system aimed at achieving the ideal balance of stiffness, weight, and rotational efficiency. The system integrates the bottom bearing with the right crank arm, using a 24 mm axle or bearing diameter, which is optimal for stability. High-quality bearing seals ensure a long service life for the component.