Description
Shimano SM-BB93 Hollowtech II Bottom Bracket | BSA 68/73 mm
If you want to install XTR Hollowtech II 24 mm cranks from different generations, ranging from FC-M980 to FC-M9100, on a bike frame with a BSA bottom bracket and a case width of 68 mm or 73 mm, then the most suitable Shimano bottom bracket is the SM-BB93. This bottom bracket is equipped with special seals that were specifically developed for mountain bike (MTB) use. It is also notable for its smooth operation and lightweight design, which is particularly important for mountain bikes.
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.
Specification
Technical features
Category MTB
BB Type BSA
Crank Brand Shimano
Axle Type Thread
Frame width (mm) 68/73
Axle Diameter (mm) 24 (Hollowtech II)
Bearing material Steel
Weight (g) 71
