Bottom Brackets up! The Shimano SM-BB91 Road Press Fit Bottom Bracket is a top of the range complete press-fit bottom bracket assembly kit for Shimano HollowTech II and two piece road cranks. It comes with an inner cover for 86.5mm BB shells.
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This BB was just what I needed and well priced in comparison with the competition.
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Excellent kit as always from Shimano. Fitting the BB (using the correct tools - I used Park Tool HHP-3 and the shims the come with the BBT90.3 removal tool) was a breeze and there is no longer an annoying creak from my BB. I fitted one side at a time to reduce the possibility of misalignment. In anyone's book, that should be considered a result! Note: I was replacing an FSA MegaExo BB that came with the bike, which was also fitted with an FSA Gossamer chainset. I never liked this chainset as the shifting was always very sloppy. So, when it came to changing the BB, I decided to go with Shimano as the plan was to eventually replace the chainset with Shimano Ultegra. The reason I state all of this is, despite extensive research, the spindle diameter between the FSA and Shimano is different - the FSA was too wide for the Shimano BB, which meant that I had to change the chainset at the same time. This was no biggie for me as I wanted to make the change anyway and I just had to do it sooner.
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