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smooth rolling efficiency
Whether you're a seasoned cyclist or a bike enthusiast
18 % more puncture resistance and a 9 % weight reductionoffering standout performance gains
secure inflation with minimal air loss
and enduring quality
Shimano SM-BB92-41B Bottom Bracket Dura-Ace Press-Fit 86.5mm Air Blower smooth rolling efficiencyMade to press right into your bike this Shimano BB92 bottom bracket will mate your Shimano HollowTech crankset to any frame equipped with a BB92 bottom bracket shell. It comes with two steel cartridge bearings pressed into composite cups. The cups increase the outside diameter of the assembly to 41mm to match the I. D. of the frames bottom bracket shell. Being part of the new press fit standard there is also a 1. 75mm thick outer lip that provides a
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