The Shimano Ultegra SM-BB72-41B Press-Fit Bottom Bracket represents the gold standard for road cyclists who demand reliability and precision. Engineered specifically for modern press-fit frame standards with an 86.5mm shell width, this bottom bracket delivers exceptional performance and durability for your road cycling adventures. Designed to accommodate 24mm spindle cranksets, this bottom bracket seamlessly integrates with popular Shimano road drivetrains including Ultegra R8000 series, 105, and Dura-Ace models.




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