Shimano Dura Ace 7700 Bottom Bracket

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DURA-ACE Track features race-proven Hollowtech Octalink Bottom Brackets. This is an NJS approved bottom bracket, with open Needle and Ball Bearings that can be adjusted for speed.

• JIS (English BSC) Thread
• BB Shell Width: 68mm
• Spindle Length: 109.5mm
• Spindle Material: Chrome-moly Steel
• Weight: 173g

Dura Ace has represented the state of art of bicycle components under Shimano since 1973. Over the past 40 years, Dura Ace has tested and developed many excellent components that delivers concentration, control and confidence with slick, fast, accurate performance.