Shimano Ultegra SM-BB71-41B Hollowtech II Press Fit Bottom Bracket. This is a high-performance bicycle component designed for road bikes using a press-fit shell standard.
Type: Press-fit (BB86 standard).
Shell Width: Compatible with 86.5mm shells.
Shell Diameter: 41mm.
Axle Compatibility: Designed for 24mm Shimano Hollowtech II cranksets.
Material: Fibre-reinforced polymer cups, which help reduce the risk of frame noise and damage.
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SHIMANO Bottom Bracket HollowtechII Sm-bb71-41B 86.5 mm
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