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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
  • Available in either 68mm English or 70mm Italian versions

Specifications:
Frame Interface: BSA/English Threaded
Spindle Interface: 24mm (Shimano Hollowtech II, FSA MegaExo, Surly OD, FSA MegaExo Light, RaceFace EXI)
Bottom Bracket Shell ID: 1.37
Shell Width: 68mm
Color: Black
Weight: 77g (Manufacturer Claimed)

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