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Shimano Dura Ace Octalink Bottom Bracket: BB-7700 - 109.5mm x 68mm (Almost NOS <30 Miles)

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Product Description

This lightweight bb is fully rebuildable!  It features roller bearings, and can be easily greased just by removing the cups. 

This is an Octalink V1 bb, and is compatible with Dura Ace 7700, Ultegra 6500, and 105 5500 series cranks, as well as other manufacturer's cranks that use Octalink V1 (FSA, Ritchey, etc).  It is NOT compatible with Deore, Tiagra, Sora cranks, which use Octalink V2 BB-ES51 bottom brackets (available below)


Almost NOS, taken on one 30 mile ride.  Some grease in the threads, otherwise mint and buttery.


  • Spindle length: 109.5mm (for double cranks)
  • Threads: English 68mm shell, 1.37x24
  • Octalink V1

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