Please use the Cannondale Gear Hanger Identification chart to help identify the correct gear hanger for your bicycle.Note: For mechanical gears use KP395/Genuine Cannondale part, fits the following models:2017-19 Cannondale S6 EVO Crb Di22017-19 Cannondale S6 EVO Crb Disc Di22017-19 Cannondale S6 EVO HM Di22017-19 Cannondale S6 EVO HM Disc Di2