Dura Ace SM-AD91

For frames without braze-on hanger

• Designed specifically for Di2 derailleurs
• Also works with mechanical derailleurs
• Built-in aluminium plate stabilizes the derailleur while changing gears
• Failure to use this clamp could result in damage to the bicycle frame

Specifications

• Misc: 34.9mm

Special order - ships in 5-10 days from our distributor.