Maxton Design Side Flaps Ford Focus St / St-line Mk4 Flaps Surface:Gloss Flaps dense air from outside the

dense air from outside the engine bay to reach the fuel metering unit more efficiently for great power gains

for better fitment we would recommend fitting with RS Radiator to prevent any rubbing

The air box’s slotted lid helps to provide a heightened induction noise and the comprehensive fitting kit also includes a replacement Pro Hoses silicone coolant pipe that redirects underneath the air box to allow more space

With larger internal diameters on the pipework

A catch can works as a filter to catch harmful contaminants before they can reach the inlet system

Maxton Design Side Flaps Ford Focus St / St-line Mk4 Flaps Surface:Gloss Flaps dense air from outside theSide Flaps Ford Focus ST ST Line Mk4 FITS ONLY: Ford Focus ST MK4 (2019 )Ford Focus ST Line MK4 (2018 )** Fits only with: FOFO4STCNC SD1 ** COMPLETE SET CONTAINS: Flaps Fitting kit