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Milltek Ford Focus MK4 ST Resonated GPF/OPF Bypass | SSXFD311

Milltek Ford Focus MK4 ST Resonated GPF/OPF Bypass | SSXFD311

SKU: SSXFD311

Milltek Ford Focus MK4 ST Resonated GPF/OPF Bypass – SSXFD311

Upgrade your Ford Focus MK4 ST 2.3 EcoBoost with the Milltek Sport Resonated GPF/OPF Bypass, designed to improve exhaust gas flow and deliver a more distinctive performance exhaust note.

 

Manufactured in the UK using premium stainless steel, this high-quality Milltek exhaust upgrade replaces the factory Gasoline Particulate Filter (GPF/OPF) with a freer-flowing resonated section.

The resonated (quieter) design offers a more refined exhaust sound compared with non-resonated bypass options, making it ideal for motorsport enthusiasts wanting a sportier exhaust character without opting for the loudest configuration.

 

Specifically engineered for use with a Milltek Sport Cat-Back Exhaust System, the SSXFD311 offers precision fitment and high-quality construction.

 

Key Features & Benefits

  • Milltek Sport Performance Engineering – Premium British-made exhaust components.

  • Resonated (Quieter) Design – A more controlled exhaust note compared with non-resonated versions.

  • Improved Exhaust Flow – Removes the restrictive factory GPF/OPF for motorsport applications.

  • Premium Stainless Steel – Durable, corrosion-resistant construction.

  • 76.2mm (3-inch) Diameter – Large-bore exhaust design.

  • Milltek Cat-Back Compatible – Designed specifically for connection to compatible Milltek Sport exhaust systems.

  • Performance Tuning Compatible – Requires a suitable Stage 2 ECU remap.

 

Vehicle Compatibility

  • Ford Focus MK4 ST 2.3 EcoBoost Hatchback (GPF/OPF equipped, 2019 onwards)

  • Ford Focus MK4 ST 2.3 EcoBoost Estate (GPF/OPF equipped, 2019 onwards)

 

Product Specifications

  • Manufacturer: Milltek Sport

  • Part Number: SSXFD311

  • Product Type: Resonated GPF/OPF Bypass

  • Pipe Diameter: 76.2mm / 3 inches

  • Exhaust Configuration: Resonated (Quieter)

  • Compatibility: Milltek Sport Cat-Back Exhaust

  • EC Approved: No

  • ECU Remap: Stage 2 required

  • Application: Motorsport / off-road use only

 

Why Choose OC Motorsport?

At OC Motorsport in Battlesbridge, Essex, we specialise in Ford performance upgrades, exhaust systems, professional installation and ECU remapping.

Whether you're upgrading your Focus ST exhaust or planning a complete performance build, our experienced team can help you select compatible components for your vehicle.

Contact OC Motorsport today for product enquiries, compatibility advice and professional fitting options.

 

Important: This product removes factory emissions-control equipment and is intended for motorsport/off-road use only. It is not suitable for use on UK public roads. A Stage 2 ECU remap is required. This product is designed for fitment to a compatible Milltek Sport cat-back system, not the original factory cat-back exhaust.

    £296.68Price
    Excluding VAT
    Quantity

    Returns Information: Thank you for choosing our products. We strive to provide excellent customer service, and we want to ensure your satisfaction with your purchase. Please review our return policy below: Timeframe: Our return policy lasts for 14 days from the date of delivery. If 14 days have passed since your purchase, we regret to inform you that we cannot offer a refund or exchange. Eligibility: To be eligible for a return, your item must meet the following criteria: It must be unused and in the same condition as when you received it. It should be in its original packaging, suitable for resale. The buyer is responsible for the return postage costs, and we recommend using a tracked and insured service. Restocking Fee and Outbound Postage: Please note that all returns are subject to a 10% restocking fee. Additionally, outbound postage fees will be deducted from the refunded amount. The handling fee covers the costs incurred in processing credit card payments, as well as postage and packaging costs. Exemptions: Certain types of goods are exempt from being returned. These items cannot be refunded once a special, non-stock item has been processed. Return Process: To initiate a return, please contact us as soon as possible. We will provide you with the necessary instructions to complete the return. Condition of Returned Items: Please ensure that any items being returned are not damaged and are in "as new" condition. Damaged or incomplete items may be subject to a partial refund. Refunds: Once we receive your returned item and complete the inspection, we will send you an email to notify you of its receipt. We will also inform you of the approval or rejection of your refund. If your refund is approved, we will process it, and the credit will be automatically applied to your credit card or original method of payment within a specific number of days. Sale and Group Buy Items: Please note that only regular-priced items are eligible for refunds. Unfortunately, sale and group buy items cannot be refunded. Damaged or Defective Goods: In the event that your goods arrive damaged or incomplete, please notify OC Motorsport within 24 hours of delivery. If we have mistakenly supplied incorrect parts, we will first attempt to provide you with the correct parts. If the correct products are unavailable, we will reimburse you the full purchase price within 14 days. However, please note that OC Motorsport is not responsible for any labour charges incurred during the fitment or removal of suspected incorrectly ordered or supplied parts. Warranties: Generally, warranties are provided by the product manufacturer and not by OC Motorsport. Therefore, we recommend reaching out to the product manufacturer as the primary point of contact. If you encounter any difficulties in contacting the manufacturer, please feel free to reach out to us, and we will do our best to assist you. Thank you for taking the time to familiarize yourself with our return policy. If you have any further questions or require assistance, please don't hesitate to contact us.

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