The Shimano Ultegra Di2 front derailleur is available in a braze-on style only. But, no worries if that's not how you roll, thanks to this handy clamp-on adapter. Elegantly anodized to match the sleek gray finish of the Ultegra Di2 front derailleur (and the rest of the Di2 goodies), it's available in 31.8mm and 34.9mm diameter versions.
Recommended Use: mounting your front Di2 derailleur with a clamp
Manufacturer Warranty: 1 year