Which YT Bikes Does the Pilo D778 Derailleur Hanger Fit?

The Pilo D778 is the replacement rear derailleur hanger for YT Jeffsy CF from 2016 to 2018, Jeffsy AL from 2016 to 2019, and Capra CF and AL from 2018 to 2019. Pilo CNC machines it from 6061 T6511 billet aluminum and finishes it in hard black anodize, in an ISO 9001 certified facility. It mounts on the inside of the dropout and runs a 12 mm axle. Compare your current hanger against the photos before ordering, because YT changed hanger shapes between generations.

The S31 lock nut is included, and Pilo lists the axle thread size as M16x1 left hand. A derailleur hanger is the part designed to bend or shear before your frame or your rear derailleur does, so a bent one after a drive side crash is the system working correctly rather than failing. It is also the part that quietly ruins shifting long before anyone thinks to check it. If your indexing has gone vague and no amount of barrel adjustment fixes it, bring the bike by the lab and we will put a gauge on the hanger before you start replacing anything more expensive.