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3" Cat-Back Performance Exhaust (Valved)

Part number: FD116

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Fiesta ST Mk8 Cat-Back Performance Exhaust (incl GPF Delete)
Pipework - 3" (76.2mm) bore.
Requires mandatory ECU reflash (PPF models only)

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Duologi Finance - Cobra Sport Exhausts

Cobra Sport exhausts systems come with a lifetime warranty for the original purchaser, giving you ultimate peace of mind.

All Cobra Sport exhausts are manufactured in the UK from certified grade 304 stainless steel and TIG welded for a superior quality finish.

EML lights may activate after removing the standard O/E catalyst. An ECU Re-map is recommended to correct this problem and stabilise all power increases.

The product images shown are for illustration purposes only and due to product enhancement may not be an exact representation of the product.

For any questions, queries or simply for our advice on these products call us on + 44 (0)114 244 7123.

Product Description


Cobra Sport performance exhausts enhance the sound, looks and quality of your vehicle giving you the ultimate driving experience. Our sports exhausts range is fully guaranteed to give you assurance of our quality.

This Ford Fiesta Mk8 ST cat back performance exhaust are made in 3"/76.2mm pipework and fit from the Catalyst section backwards (Cat-back) replacing the GPF, centre and rear sections.

Please Note - This performance exhaust retains the use of exhaust valves. When switching drive modes (e.g. Eco to Race mode) your exhaust tone will continue to swop from quieter to louder tones as before.

All relevant fittings and gaskets are supplied.

Please note: this exhaust removes the GPF filter and will require basic engine tuning at time of fitment to cancel the EML light.

Fitment to GPF equipped models is for motorsport and off road use only.

Cobra Sport Review

The Ford Fiesta ST Mk8 is a fantastic hot hatch. The shift from a four-cylinder engine in the beloved Mk7.5 ST to a three-cylinder the Mk8 was met with some uncertainty upon launch. But, when Fiesta fans drove the updated pocket rocket, any doubts they had were quickly quelled. Despite being down on capacity and minus one cylinder, the rev-happy 1.5 EcoBoost engine produces more power than its predecessor whilst at the same time, returning better fuel economy thanks to innovations such as Cylinder Deactivation Technology.

However, more stringent emissions regulations forced Ford to fit a GPF (Gasoline Particulate Filter) to the Mk8 ST, significantly subduing its exhaust note.

Following on from the success of the GPF Back system launched in late 2019, Cobra Sport has developed a solution to bring the car to life. They are proud to announce their latest product release for the Mk8 Fiesta ST: a full Cat Back Performance Exhaust system which includes the GPF-Delete section.

This system differentiates itself from the GPF Back variant by including an additional mid section to completely remove the factory-fitted particulate filter. This allows for improved gas-flow, better performance gains and most importantly and a significant improvement in the exhaust tone. A simple ECU reflash will be required at the time of fitting to prevent engine warning lights illuminating.

The bore size of the Cobra Sport exhaust has been increased to 3” (76.2mm), which is unique in the market providing the greatest upgrade in terms of performance, flow rate and sound levels.

The performance exhaust system is made from 3"/76.2mm mandrel-bent T304 stainless steel pipework and comprises of a GPF-delete, mid section and a valved back box which maintains the OEM valve functionality. In addition to this, buyers have the choice of three stylish slash-cut 3.5"/88.9mm tailpipe finishes including Highly Polished Steel, Black Ceramic-Coated (optional extra) and Carbon Fibre (optional extra).

Like all Cobra Sport exhausts, this system utilises precision TIG-welding techniques for exemplary fit and finish – a feature that sets Cobra Sport apart from other manufacturers. With over 25 years in the performance exhaust industry, each Cobra Sport exhaust system is designed, manufactured and tested in Sheffield, the heart of the UK steel industry. Cobra Sport utilise TIG-welding techniques to ensure a flawless finish and quality that you can rely on.

Related Media Files

Ford Fiesta Mk8 ST Carbon Fibre Tip Showcase with Sound Examples (3" GPF-Back Exhaust)

First Drive - Jamie FYD reviews the Cobra Sport / Airtec Mk8 Fiesta ST demo car (fitted with 3" GPF-Back Exhaust)

Ford Fiesta Mk8 ST VLOG with Sound Examples (3" GPF-Back Exhaust)

Cobra Sport Exhausts Ford promotional video.


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