MILLTEK Large Bore Downpipe and Hi-Flow Sports Cat Ford Focus Mk4 ST 2.3-litre EcoBoost Estate/Wagon/Combi (OPF/GPF)... SKU: SSXFD336 Price 4,431.13 zł Fits to both Milltek Sport OPF/GPF Bypass and OE OPF/GPF - Requires Stage 2 ECU Software