Performance - Audi S4 B9

Cat-back - Non-Resonated (Louder) with Quad 90mm GT-90 Cerakote Black Trims (Non OPF/GPF Models) Part No. Description Pipe Diameter (mm) Pipe Diameter (inches) Race EC approved Valvesonic SSXAU658 Cat-back-Cat Back Non-Resonated (Louder) with Quad GT-90 Cerakote Black Trims 63.5 2.5 No No No Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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Cat-back - Non-Resonated (Louder) with Quad 90mm GT-90 Burnt Titanium Trims (Non OPF/GPF Models) Part No. Description Pipe Diameter (mm) Pipe Diameter (inches) Race EC approved Valvesonic SSXAU654 Cat-back-Cat Back Non-Resonated (Louder) with Quad GT-90 Burnt Titanium Trims 63.5 2.5 No No No Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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Cat-back - Non-Resonated (Louder) with Quad 100mm GT-100 Titanium Trims (Non OPF/GPF Models) Part No. Description Pipe Diameter (mm) Pipe Diameter (inches) Race EC approved Valvesonic SSXAU652 Cat-back-Cat Back Non-Resonated (Louder) with Quad GT-100 Titanium Trims 63.5 2.5 No No No Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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Cat-back - Non-Resonated (Louder) with Quad 100mm GT-100 Polished Trims (Non OPF/GPF Models) Part No. Description Pipe Diameter (mm) Pipe Diameter (inches) Race EC approved Valvesonic SSXAU650 Cat-back-Cat Back Non-Resonated (Louder) with Quad GT-100 Polished Trims 63.5 2.5 No No No Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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Cat-back - Non-Resonated (Louder) with 100mm Quad GT-100 Cerakote Black Trims (Non OPF/GPF Models) Part No. Description Pipe Diameter (mm) Pipe Diameter (inches) Race EC approved Valvesonic SSXAU651 Cat-back-Cat Back Non-Resonated (Louder) with Quad GT-100 Cerakote Black Trims 63.5 2.5 No No No Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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Cat-back - Non-Resonated (Louder) with 100mm Quad GT-100 Burnt Titanium Trims (Non OPF/GPF Models) Part No. Description Pipe Diameter (mm) Pipe Diameter (inches) Race EC approved Valvesonic SSXAU653 Cat-back-Cat Back Non-Resonated (Louder) with Quad GT-100 Burnt Titanium Trims 63.5 2.5 No No No Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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Cat-back - Non-Resonated (Louder) with Quad Cerakote Black Oval Trims (Non OPF/GPF Models) Part No. Description Pipe Diameter (mm) Pipe Diameter (inches) Race EC approved Valvesonic SSXAU656 Cat-back-Cat Back Non-Resonated (Louder) with Quad Cerakote Black Oval Trims 63.5 2.5 No No No Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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Cat Replacement Pipe-Cat Bypass fits with OE and Milltek Sport Cat back Systems (Non GPF Equipped Models) Part No. Description Pipe Diameter (mm) Pipe Diameter (inches) Race EC approved Valvesonic SSXAU674 Cat Replacement Pipe-Cat Bypass fits with OE and Milltek Sport Cat back Systems 63.5 2.5 Yes No No Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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Hi-Flow Sports Cat and Downpipe-200 Cell HJS High Flow Sport Cat fits with OE and Milltek Sport Cat back Systems (Non GPF Equipped Models) Part No. Description Pipe Diameter (mm) Pipe Diameter (inches) Race EC approved Valvesonic SSXAU673 Hi-Flow Sports Cat and Downpipe-200 Cell HJS High Flow Sport Cat fits with OE and Milltek Sport Cat back Systems 63.5 2.5 No No No Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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The HJS tuning ECE Downpipes are specifically designed to be fully road legal within Europe (R103 compliant) while still providing the benefits of the High Flow Sports Cat. HJS ECE Cats do not require engine ECU software upgrades and will not trigger a check engine light, ranging between 200 to 300 cells and designed to fit with the OE cat back system or Milltek Sport cat back systems.       All our performance exhaust systems are designed with you in mind, and we cater to an ever-expanding range of vehicles. We believe in continuous evolution, and our research & development team work throughout the year to deliver the most in demand solutions to all your performance exhaust requirements. All of our products are made in the UK and distributed to more than 90 countries worldwide, making Milltek Sport one of the most accessible performance aftermarket brands on the market.

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Active Valve Control (AVC) is available to support both vehicles equipped with factory valves on the exhaust as well as a growing range of upgrades Milltek Sport offers to have performance exhaust systems with Valve Control. Also with optional App control on selected models, via iPhone or Android smartphone app’s, AVC brings total control of the exhaust to the drivers finger tips, via full CAN BUS integration with built in safety controls, Milltek’s AVC enables the driver to choose when the valves open and close to tune the sound and volume of the exhaust.       All our performance exhaust systems are designed with you in mind, and we cater to an ever-expanding range of vehicles. We believe in continuous evolution, and our research & development team work throughout the year to deliver the most in demand solutions to all your performance exhaust requirements. All of our products are made in the UK and distributed to more than 90 countries worldwide, making Milltek Sport one of the most accessible performance aftermarket brands on the market.

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ValveSonic Electronic Valved System. Titanium Tips Part No. Description Tailpipe Pipe Diameter Race EC MSVSFK01 ValveSonic Electronic Valve Fitting Kit 2.37" (60.30mm) MSAU461 LH Downpipe MSAU462 RH Downpipe MSAU594 'X' Pipe Assembly MSAU595 Centre Silencer Assembly MSAU620 LH ValveSonic Rear Silencer {including Electronic Valve} MSAU621 RH ValveSonic Rear Silencer {including Electronic Valve} MSAU513 Brace Bar MSVW374 x4 Titanium Tips Quad 100mm GT100 Why Buy a Milltek Sport Exhaust? Milltek Sport stainless steel exhausts have a genuine performance edge - noticable power gains, sounds that are truly awesome, styled looks that are aggressive but discrete and a feeling of true exhilaration. Transforms performance and driveability Sharper throttle response Substantial weight saving over original equipment exhaust systems Precision, quality controlled manufacture to ISO 9001 standards Highest quality aircraft-grade stainless steel Low pressure stainless exhaust systems for maximum performance - with no loss of low end torque High quality type-304 aircraft grade stainless steel Over 30 years of continuous exhaust development and technical expertise Ever expanding comprehensive selection of performance exhausts Milltek Sport are on tuning companies ‘must-have’ list and are exported to over 70 countries worldwide Designed and manufactured in the UK Milltek Sport stainless steel exhausts come with a lifetime guarantee for the first purchaser (excluding cats & flexis)   Milltek Sport exhausts are produced in high quality type 304 aircraft grade stainless steel. This material is anti-magnetic (other manufacturers' stainless steel may not be) and is less susceptible to discolouration. This quality of stainless steel is used on all pipework and the total construction of the silencer. Mandrel bending ensures full flow bends for better gas flow and Milltek Sport exhaust systems are increased in bore to ensure ultimate performance without the loss of mid-range torque. All Milltek Sport exhausts are designed, developed and manufactured in-house in the UK.

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