This is a Shimano SM-BBR60 Bottom Bracket Unit. Weighing in at 77g, the SM-BBR60 Ultegra Bottom Bracket is 14 grams lighter than the 6700 bottom bracket offering professional level technology for the everyday cyclist.
Features
- Reduced size for light weight
- 14g lighter and 50% less friction than BB6700
- Spindle Interface Type: Hollowtech II
- Weight: 77.0 g
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