Milltek Ford Focus MK4 ST Estate GPF/OPF Bypass – Non-Resonated | SSXFD314
Milltek Ford Focus MK4 ST Estate Non-Resonated GPF/OPF Bypass – SSXFD314
Unlock a louder, more aggressive exhaust note from your Ford Focus MK4 ST with the Milltek Sport Non-Resonated GPF/OPF Bypass Pipe.
Designed specifically for the Ford Focus MK4 ST 2.3 EcoBoost, this premium exhaust upgrade replaces the factory petrol particulate filter (GPF/OPF), reducing exhaust restrictions and delivering a more pronounced performance exhaust sound.
Manufactured in the UK by Milltek Sport, the SSXFD314 is engineered for compatibility with Milltek Sport cat-back exhaust systems, making it an ideal upgrade for dedicated track and motorsport builds.
Key Features & Benefits
Non-Resonated Design: Produces a louder, more aggressive exhaust tone compared with resonated alternatives.
Improved Exhaust Flow: Replaces the factory GPF/OPF with less restrictive pipework.
Premium Stainless Steel: Manufactured using high-quality stainless steel for durability and corrosion resistance.
Precision Engineering: Designed for accurate fitment with compatible Milltek Sport cat-back exhaust systems.
Performance Focused: Ideal for enthusiasts building a track-focused Ford Focus ST.
UK Manufactured: Designed and manufactured by Milltek Sport in the United Kingdom.
Vehicle Compatibility
Ford Focus MK4 ST 2.3 EcoBoost Estate/Wagon – 2019 onwards
Ford Focus MK4 ST 2.3 EcoBoost Hatchback – 2019 onwards
GPF/OPF-equipped models only
Compatible with Milltek Sport cat-back exhaust systems only
Product Specifications
Manufacturer: Milltek Sport
Product Code: SSXFD314
Product Type: GPF/OPF Bypass Pipe
Configuration: Non-Resonated (Louder)
Pipe Diameter: 80mm
Material: Premium stainless steel
EC Approved: No
Stage 2 ECU Remap: Required
Application: Motorsport / Off-Road Use Only
Why Choose OC Motorsport?
At OC Motorsport in Battlesbridge, Essex, we specialise in Ford ST and RS performance upgrades, ECU remapping, exhaust systems and vehicle tuning.
Whether you're building a dedicated track car or looking for advice on compatible Milltek performance exhaust components, our experienced team can help you choose the correct setup for your vehicle.
Contact OC Motorsport today for product enquiries, compatibility advice and motorsport installation information.
Important: This component removes factory-fitted emissions equipment and is intended for off-road and motorsport use only. It is not approved for UK public-road use. Removing factory emissions equipment can result in an MOT failure. A Stage 2 ECU remap


