Shimano

Shimano Band Adapter

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DURA-ACE DI2 Front Derailleur Clamp Band Adapter - 28.6/31.8 mm/34.9mm

For installing SHIMANO braze-on front derailleurs to frames requiring a band clamp, the DURA-ACE SM-AD91 is available in 34.9, and 28.6/31.8mm sizes.