Turbo Downpipe Milltek Ford Focus MK4 ST 2.3 EcoBoost 2019-2025 with DPF - Decat Pipe

Milltek Sport Decat Downpipe for Ford Focus MK4 ST

On the Ford Focus MK4 ST, the original downpipe and its catalytic converter restrict exhaust gas flow. This large-diameter Milltek Sport decat downpipe is the foundation of a serious Stage 2 build.

Technical specifications

• Milltek part number: SSXFD337
• Part type: Decat Downpipe
• Detail: Large-diameter decat downpipe
• Tube diameter: 80 mm
• Fitting information: For fitting with Milltek Sport DPF Bypass and OEM DPF - ECU remap
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Ford Focus MK4 ST 2.3 EcoBoost (Wagon, 2019-2025, with DPF)
• Ford Focus MK4 ST 2.3 EcoBoost (Sedan, 2019-2025, with DPF)

Not sure about compatibility with your vehicle? Contact us with your VIN before ordering.

Most frequently asked questions

• Is a remap required? Yes. A matching Stage 2 ECU map is essential to get the full benefit and to avoid an engine warning light linked to the lambda sensors. It is the question buyers ask most often, and the answer is always the same.
• What about the technical inspection? A decat downpipe will not pass the emissions test (contrôle antipollution). This product is intended for motorsport use only.

Why choose Milltek Sport?

Customer feedback most often highlights the quality of fit and a deep tone that is present but never harsh. This is the hallmark of Milltek Sport, a British manufacturer specialized in stainless steel exhausts.

Further reading

• Downpipe: decat or high-flow catalytic converter for your Stage 2?
• Exhaust systems and technical inspection in France

This product is intended exclusively for motorsport use on closed circuits. Use on public roads is not permitted.