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SHIMANO Dura-ACE Track BB-7710 68mm
This bottom bracket uses both ball and needle bearings to reduce flex for greater power transmission efficiency.
Model No. BB-7710
NJS Approved
Dura-Ace Track
OCTALINK Splined BB Interface
Compatibility FC-7710
Hollow Pipe
Axle Length: 109.5mm
Shell width: 68mm(BC1.37) (English)
Weight: 173g
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