Shimano SM-BB72-41B Hollowtech II Bottom Bracket | PressFit BB86
Shimano SM-BB72-41B Hollowtech II Bottom Bracket | PressFit BB86
Shimano SM-BB72-41B is a press-fit bearing type bottom bracket designed for Ultegra and 105 11-speed, as well as Metrea City cranksets. Small ball bearings help reduce overall weight.
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.
| Category | Road, Gravel |
| BB Type | PressFit |
| Crank Brand | Shimano |
| Frame width (mm) | 86.5 |
| Axle Diameter (mm) | 24 (Hollowtech II) |
| Bearing material | Steel |
| Weight (g) | 69 |
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