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RaceChip GTS Black for Audi S4 S4 3.0TFSI
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RaceChip GTS Black for Audi S4 S4 3.0TFSI

$699.00
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Take your Audi S4 to new heights with the RaceChip GTS Black. Expect to see gains of 41 HP and 100 lbs. of TRQ for your Audi S4 2016-2023.
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RaceChip GTS Black for Audi S4 3.0 TFSI
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RaceChip GTS Black for Audi S4 3.0 TFSI

$599.00
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Take your Audi S4 to new heights with the RaceChip GTS Black. Expect to see gains of 67 HP and 70 lbs. of TRQ for your Audi S4 2007-2016.
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AFE Cat-Back Exhaust System For Audi S4
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AFE Cat-Back Exhaust System For Audi S4

Original price was: $1,937.25.Current price is: $1,549.80.
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The aFe MACH Force-Xp Stainless Steel Cat-Back Exhaust System w/ Carbon Fiber Tip Audi S3 L4-2.0L (t) 2015-2023 for your 2018-2022 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$1,483.00
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The Milltek Resonated Catback Exhaust System Audi S4 4.2 V8 Quattro B7 Saloon - Avant - Cabriolet 2004-2009 for your 2004-2016 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$1,305.00
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The Milltek Non-Resonated Catback Exhaust System Audi S5 Coupe 4.2 V8 Quattro (Manual and Auto) 2007-2011 for your 2008-2016 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$1,343.00
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The Milltek Non-Resonated Catback Exhaust System Audi S4 4.2 V8 Quattro B7 Saloon - Avant - Cabriolet 2004-2009 for your 2004-2016 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$1,251.00
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The Milltek Non-Resonated Catback Exhaust System Audi S4 4.2 V8 Quattro B6 Saloon Avant and Cabriolet 2003-2005 for your 2003-2005 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$1,253.00
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The Milltek Non-Resonated Catback Exhaust System Audi S4 4.2 V8 Quattro B6 Saloon Avant and Cabriolet 2003-2005 for your 2003-2005 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$1,391.00
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The Milltek Full System Catback Resonated | GT100 Tips Audi S4 B6 4.2 V8 2003-2005 for your 2003-2005 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$2,410.00
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The Milltek Catback Exhaust System Audi S5 Coupe and Cabriolet 3.0TFSI Quattro S tronic B8 2009-2011 for your 2009-2011 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$2,450.00
In Stock
The Milltek Catback Exhaust System Audi S5 Coupe and Cabriolet 3.0TFSI Quattro S tronic B8 2009-2011 for your 2009-2011 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$2,596.00
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The Milltek Catback Exhaust System Audi S5 Coupe and Cabriolet 3.0TFSI Quattro S tronic B8 2009-2011 for your 2009-2011 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$2,450.00
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The Milltek Catback Exhaust System Audi S4 3.0 Supercharged V6 B8 2009-2012 for your 2009-2016 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$2,410.00
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The Milltek Catback Exhaust System Audi S4 3.0 Supercharged V6 B8 2009-2012 for your 2009-2016 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$3,375.00
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The Milltek Catback Audi S5 3.0 V6 Turbo Sportback B9 (Sport Diff Models Only & without Brace Bars) 2017-2023 for your 2016-2022 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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Milltek Cat-Back Exhaust System For Audi S4
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Milltek Cat-Back Exhaust System For Audi S4

$3,583.00
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The Milltek Catback Audi S5 3.0 V6 Turbo Sportback B9 (Sport Diff Models Only & without Brace Bars) 2017-2023 for your 2016-2022 Audi S4 is a great way to increase horsepower and torque gains by replacing your restricted factory car exhaust system.
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