The Remus exhaust adapter for the 2011 Citroën DS4 with 1.6L engines (specified 9HR/(HCB/5FU) variants) is a distance tube exhaust adapter made to match Remus components to the DS4’s underbody routing. It keeps correct spacing and orientation for secure mating with the factory system, supporting clean installation for the listed 1.6L DS4 engine configurations without requiring changes to original mounting geometry.
Remus 2011 Citroen Ds4 1.6L (9Hr/(Hcb/5Fu) Distance Tube Exhaust Adapter