Cobra Sport / (Mk4) ST (2019>)

Ford Focus ST (Mk4) Front Downpipe Sports Cat / De-Cat Performance Exhaust

Part Number: FD125

Pipework Diameter: 3.5" (88.9mm) > 3" (76.2mm)

£583.33 Excl. VAT
£699.99 Incl. VAT

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 Focus ST Mk4 performance exhaust is made in 3.5"/88.9mm reducing to 3"/76.2mm bore pipework and fits from the turbo to the centre section.

The sports cat exhaust option will enable you to pass a UK MOT emissions test or police road side checks.

The de-cat sports exhaust is sold for motorsport and off road use only and will NOT be able to pass a UK MOT emissions test or police road side checks.

All relevant fittings and gaskets are supplied for fitment.

Fitment will require basic engine tuning at time of fitment to cancel the EML light.

De-Cat fFitment is for motorsport and off road use only.

Cobra Sport Exhausts provide the exhaust solutions to the Motorbase Performance British Touring Car Championship team who for 2020 fielded a trio of Mk4 Focus STs. This partnership allows us to test our products on track at the highest level of British Motorsport, the experience gained from the competitive track testing is fed back into our road going exhaust system. 


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

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.

As with all new models, the Mk4 ST is fitted with a GPF (petrol particulate filter), which limits the potential of the engine, leading to a muted and slightly disappointing sound.

Cobra Sport's engineers have developed a solution in the form of their new PPF Delete. This high-quality, 3in (76.2mm) TIG welded stainless steel performance exhaust removes a significant restriction in the exhaust system.

A direct replacement for the OEM part, the Cobra Sport GPF Delete is the most cost-effective way to improve the sound of the stock Mk4 ST. A simple ECU reflash will be required at the time of fitting to prevent engine warning lights illuminating.

Like all Cobra Sport exhausts, this product utilises precision TIG-welding techniques for exemplary fit and finish a feature that sets Cobra Sport apart from other manufacturers.

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 Focus ST Mk4 performance exhaust is made in 3.5"/88.9mm reducing to 3"/76.2mm bore pipework and fits from the turbo to the centre section.

The sports cat exhaust option will enable you to pass a UK MOT emissions test or police road side checks.

The de-cat sports exhaust is sold for motorsport and off road use only and will NOT be able to pass a UK MOT emissions test or police road side checks.

All relevant fittings and gaskets are supplied for fitment.

Fitment will require basic engine tuning at time of fitment to cancel the EML light.

De-Cat fFitment is for motorsport and off road use only.

Cobra Sport Exhausts provide the exhaust solutions to the Motorbase Performance British Touring Car Championship team who for 2020 fielded a trio of Mk4 Focus STs. This partnership allows us to test our products on track at the highest level of British Motorsport, the experience gained from the competitive track testing is fed back into our road going exhaust system. 


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

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.

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  • Lifetime Warranty

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

  • UK Manufactured

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

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