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Audi S4 Performance Exhaust Parts

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Audi B6 S4 Catback Exhaust

ES#4756568 - 041486ECS01 - Audi B6 S4 Catback Exhaust - Choose your own configuration along with your choice of exhaust tips and more! - ECS - Audi

Choose your own configuration along with your choice of exhaust tips and more! 10X Entries For Our 25th Anniversary Sweepstakes!

For Sedan models only.

Brand:
ECS - Corporate Logo
ES#:
4756568
Mfg#:
041486ECS01
Ships on Oct 29, 2026
ON SALE!
Starting at $833.33 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

AWE Non-Resonated Downpipes - Audi 3.0T

ES#4043944 - 3220-11010 - AWE Non-Resonated Downpipes - Audi 3.0T - Suited for owners seeking a "loud" and aggressive sounding system. - AWE - Audi

Suited for owners seeking a "loud" and aggressive sounding system.

Brand:
AWE - Corporate Logo
ES#:
4043944
Mfg#:
3220-11010
In Stock
$745.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B7 S4 Catback Exhaust

ES#4876874 - 012390LA - Audi B7 S4 Catback Exhaust - Choose your own configuration along with your choice of exhaust tips and more! - ECS - Audi

Choose your own configuration along with your choice of exhaust tips and more! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4876874
Mfg#:
012390LA
Ships on Oct 29, 2026
ON SALE!
Starting at $857.48 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2.5" Performance Downpipe Set - Resonated

ES#3969400 - SAUP044 - 2.5" Performance Downpipe Set - Resonated - 2.50" 304 stainless performance downpipes with resonated sections - Scorpion - Audi

2.50" 304 stainless performance downpipes with resonated sections

Brand:
Scorpion - Corporate Logo
ES#:
3969400
Mfg#:
SAUP044
In Stock
$604.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Forge Turbo Blanket

ES#3411173 - FMTUBL1 - Forge Turbo Blanket - Keep your underhood temps low and your turbo speeds high! - Forge - Audi Volkswagen

Keep your underhood temps low and your turbo speeds high!

Brand:
Forge - Corporate Logo
ES#:
3411173
Mfg#:
FMTUBL1
In Stock
$94.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#2848044 - CTS-EXH-CB-0015 - Cat-Back Exhaust System - 2.5" stainless steel with quad 3" polished stainless tips - CTS - Audi

2.5" stainless steel with quad 3" polished stainless tips

Brand:
CTS - Corporate Logo
ES#:
2848044
Mfg#:
CTS-EXH-CB-0015
Ships in 7 Business Days
ON SALE! SAVE 15%
$1399.99

This product was last offered at the strikethrough price on
07-10-2026

$1189.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE Midpipe Exhaust Upgrade

ES#4489116 - IEEXCK4 - IE Midpipe Exhaust Upgrade - Aggressive sound, quality finish, reliable operation, straightforward install, and affordable fun. - Integrated Engineering - Audi

Aggressive sound, quality finish, reliable operation, straightforward install, and affordable fun. 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
4489116
Mfg#:
IEEXCK4
In Stock
$804.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE B8 3.0T Performance Downpipes

ES#3470770 - IEEXCG2 - IE B8 3.0T Performance Downpipes - Quick and easy way to add horsepower and an aggressive sound! 304 stainless steel 2.5" tubing. - Integrated Engineering - Audi

Quick and easy way to add horsepower and an aggressive sound! 304 stainless steel 2.5" tubing. 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3470770
Mfg#:
IEEXCG2
In Stock
$769.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#2827420 - SSXAU296 - Cat-Back Exhaust System - Resonated - 2.25" stainless steel with dual 100mm 'GT100' style polished exhaust tips - Milltek Sport - Audi

2.25" stainless steel with dual 100mm 'GT100' style polished exhaust tips

Brand:
Milltek Sport - Corporate Logo
ES#:
2827420
Mfg#:
SSXAU296
Ships on Aug 24, 2026
$1685.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stainless Steel Racing Catalyst for B9 Audi S4/S5

ES#4005390 - 034-105-4045 - Stainless Steel Racing Catalyst for B9 Audi S4/S5 - Offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note - 034Motorsport - Audi

Offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note

Brand:
034Motorsport - Corporate Logo
ES#:
4005390
Mfg#:
034-105-4045
In Stock
$1700.00

This product was last offered at the strikethrough price on
03-08-2026

$1200.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

AWE Track Edition Exhaust System - Audi B9 S4 3.0T

ES#4727526 - AWEB9S4TK - AWE Track Edition Exhaust System - Audi B9 S4 3.0T - Equipped with the same precision-engineering as its Touring Edition counterpart, minus the resonators up front and 180 Technology resonators in the rear. - AWE - Audi

Equipped with the same precision-engineering as its Touring Edition counterpart, minus the resonators up front and 180 Technology® resonators in the rear.

Brand:
AWE - Corporate Logo
ES#:
4727526
Mfg#:
AWEB9S4TK
In Stock
Starting at $2155.00 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE ProCore Performance Cast Downpipe - B9 S4/S5

ES#4708493 - IEEXCK6 - IE ProCore Performance Cast Downpipe - B9 S4/S5 - Check-Engine Light free! An emissions-friendly approach to exhaust upgrades! - Integrated Engineering - Audi

Check-Engine Light free! An emissions-friendly approach to exhaust upgrades! 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
4708493
Mfg#:
IEEXCK6
Ships in 4 Business Days
$2874.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

HJS Tuning 2.5" High-Flow ECE Downpipes

ES#3508359 - SSXAU725 - HJS Tuning 2.5" High-Flow ECE Downpipes - Featuring HJS Tuning 200cpsi ECE-approved sports cat - Fits with OE and Milltek cat-back systems. - Milltek Sport - Audi

Featuring HJS Tuning 200cpsi ECE-approved sports cat - Fits with OE and Milltek cat-back systems.

Brand:
Milltek Sport - Corporate Logo
ES#:
3508359
Mfg#:
SSXAU725
Ships in 3 Business Days
$5244.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Valvesonic

2.37" stainless steel with quad 100mm Titanium tips From the 2013 model year

Brand:
Milltek Sport - Corporate Logo
ES#:
2827525
Mfg#:
SSXAU408
Ships in 3 Business Days
$4901.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Exhaust Parts

Let them hear you coming with a quality performance exhaust setup. All the best exhaust brands including our in-house developed line of stainless steel exhaust upgrades are here in our expansive catalog of performance options.

Let us help you find the parts that fit your Audi

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Manufacturer names and/or part numbers are used only for identification purposes.

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