The high-clamp option for riders running the Saint FC-M815 double crankset, the Shimano Saint FD-M817 Front Derailleur plays nice with not only the 83mm bottom bracket s 57.5mm chainline, but also super fat tires and steep chain stays (65-71 degrees). The dual-pull design lets you run your cables to pull from above or below this derailleur. Designed to clamp onto 34.9mm tubes, this bottom-swing derailleur comes with extra shims to accommodate 28.6 or 31.8mm tubing.

This Saint just answered your wide-gearing prayers.