Shimano Dura-Ace SM-AD91 front derailleur adaptor

Shimano Dura-Ace SM-AD91 Front Derailleur Adapter

The Shimano Dura-Ace SM-AD91 Front Derailleur Adapter is a precise and essential component for integrating a braze-on front derailleur from the DURA-ACE Di2 group onto bicycle frames that do not have a direct braze-on mount. Specifically designed for Road use, this adapter enables the perfect positioning and function of your high-end front derailleur on frames with a clamp-on attachment. It is the ideal solution to utilize the full performance and precise shifting operations of Di2 technology on such frames.

Crafted from high-quality aluminum, the SM-AD91 adapter impresses with its lightweight nature and high rigidity. This is crucial to prevent twisting during shifting and ensure consistent, reliable performance. Its sleek and unobtrusive design seamlessly integrates into the aesthetics of your road bike, highlighting the high standards of the Dura-Ace series.

Mounting the front derailleur adapter is incredibly simple and is done via a stable screw clamp on the frame's seat tube. The exact positioning of the front derailleur can be precisely adjusted thanks to integrated guide lines, ensuring optimal chain alignment and thus smooth shifting. By using the SM-AD91 adapter, the compatibility of Shimano Dura-Ace Di2 braze-on front derailleurs is extended to a wide range of road bike frames. It is a small but crucial detail that significantly supports the longevity and performance of your Di2 groupset.

• Group: DURA-ACE Di2
• Model: SM-AD91
• Usage: Road

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