Shimano Ultegra SM-BBR60 Bottom Bracket

Item: SH-BBR60
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Shimano has lightened up their Ultegra Bottom Bracket with the SM-BBR60. Lighten up with the an Ultegra BBR60 Bottom bracket. This BB features a proprietary seal system which reduces friction by 50% letting you spin faster and more consistently.
  • Available in both English or Italian threads
  • Compatible with all HollowTech II cranks
  • 77 grams is super light
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