MST Performance Intake and Inlet for Focus MK4 ST 2.3 3009 with their range of Dual

with their range of Dual Exit exhaust upgrades which utilises the standard rear panel diffuser with a selection of dual 4-inch stainless steel

and offer a substantial 15% increase in overall diameter over the stock tailpipes

Non resonated centre

PART NO: SRNS020

in practice this method usually creates boost spiking and a less stable and repeatable boost curve

MST Performance Intake and Inlet for Focus MK4 ST 2.3 3009 with their range of DualFord Focus MK4 ST 2019+ Cold Air Intake System Features: Insulate hot air with the heat shield. Improved throttle response More aggressive and sporty induction sound Direct fit application Easy to maintain dry cone air filter. Fits: Ford Focus MK4 ST 2019+