Focus MK4 All Models

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 Focus ST Estate Mk4 cat back performance exhaust is made in 3"/76.2mm pipework and fits from the Catalyst section backwards (Cat-back) replacing the GPF, centre and rear sections. This sports exhaust is part of the Cobra Sport Venom range and is loud. IMPORTANT: this exhaust removes the GPF filter and will require engine tuning at time of fitment to cancel the EML light. Fitment to GPF equipped models is for motorsport and off road use only and will exceed noise regulations. Cobra Sport Exhausts provide the performance exhaust solutions for the Mk4 Focus STs raced by the MB Motorsport accelerated by Blue Square and Motorbase Performance teams in the 2021 Kwik Fit British Touring Car Championship. This technical partnership allows us to test our products on track at the highest level of British Motorsport. The experience gained from the competitive track environment is fed back into all of our road going performance exhaust systems.  

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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 Focus ST Estate Mk4 cat back performance exhaust is made in 3"/76.2mm pipework and fits from the Catalyst section backwards (Cat-back) replacing the GPF, centre and rear sections. This sports exhaust is part of the Cobra Sport Venom range and is loud. IMPORTANT: this exhaust removes the GPF filter and will require engine tuning at time of fitment to cancel the EML light. Fitment to GPF equipped models is for motorsport and off road use only and will exceed noise regulations. Cobra Sport Exhausts provide the performance exhaust solutions for the Mk4 Focus STs raced by the MB Motorsport accelerated by Blue Square and Motorbase Performance teams in the 2021 Kwik Fit British Touring Car Championship. This technical partnership allows us to test our products on track at the highest level of British Motorsport. The experience gained from the competitive track environment is fed back into all of our road going performance exhaust systems. 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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These Ford Focus Mk4 ST Estate performance exhausts are made in 3"/76.2mm pipework and fit from the Gasoline Particulate Filter section backwards (GPF-back) these exhausts replace the centre and rear sections. All relevant fittings and gaskets are supplied. This exhaust removes the standard rear box for the ultimate improvement in terms of exhaust tone and sound level whilst keeping the stock catalyst and GPF in place. This exhaust system has been designed to be easily upgradable to a cat-back or full turbo-back exhaust in the future by purchasing additional sections. This exhaust has a choice of 4 tailpipe options including a 4.5" (114.5mm) carbon fibre tip. GPF-Back (Box Delete) Test Results: Sound - Engine at Idle: 70.9dB (+11.9dB) - Static 4,000rpm test: 93.8dB (+13dB) Cobra Sport Exhausts provide the performance exhaust solutions for the Mk4 Focus STs raced by the MB Motorsport accelerated by Blue Square and Motorbase Performance teams in the 2021 Kwik Fit British Touring Car Championship. This technical partnership allows us to test our products on track at the highest level of British Motorsport. The experience gained from the competitive track environment is fed back into all of our road going performance exhaust systems.  

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These Ford Focus Mk4 ST Estate performance exhausts are made in 3"/76.2mm pipework and fit from the Gasoline Particulate Filter section backwards (GPF-back) these exhausts replace the centre and rear sections. All relevant fittings and gaskets are supplied. This exhaust removes the standard rear box for the ultimate improvement in terms of exhaust tone and sound level whilst keeping the stock catalyst and GPF in place. This exhaust system has been designed to be easily upgradable to a cat-back or full turbo-back exhaust in the future by purchasing additional sections. This exhaust has a choice of 4 tailpipe options including a 4.5" (114.5mm) carbon fibre tip. GPF-Back (Box Delete) Test Results: Sound - Engine at Idle: 70.9dB (+11.9dB) - Static 4,000rpm test: 93.8dB (+13dB) Cobra Sport Exhausts provide the performance exhaust solutions for the Mk4 Focus STs raced by the MB Motorsport accelerated by Blue Square and Motorbase Performance teams in the 2021 Kwik Fit British Touring Car Championship. This technical partnership allows us to test our products on track at the highest level of British Motorsport. The experience gained from the competitive track environment is fed back into all of our road going performance exhaust systems.

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