Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle

No Vehicle selected
Please select your vehicle below.

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

Audi S4 Performance Exhaust Parts

Sort By
Filter By
Return to Top

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 on Nov 9, 2026
$5244.99

This product was last offered at the strikethrough price on
08-17-2026

$5244.07 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2.5" Performance Downpipe Set

ES#3557460 - CTSEXHDP0017 - 2.5" Performance Downpipe Set - For substantial power gains, improved exhaust flow and a more throaty sound! - CTS - Audi

For substantial power gains, improved exhaust flow and a more throaty sound!

Brand:
CTS - Corporate Logo
ES#:
3557460
Mfg#:
CTSEXHDP0017
Ships in 7 Business Days
ON SALE! SAVE 15%
$599.99

This product was last offered at the strikethrough price on
09-29-2026

$509.99 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 on Nov 9, 2026
$4901.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Non-Resonated

ES#2827261 - SSXAU048 - Cat-Back Exhaust System - Non-Resonated - 2.25" stainless steel with quad 76.2mm polished tips - Milltek Sport - Audi

2.25" stainless steel with quad 76.2mm polished tips

Brand:
Milltek Sport - Corporate Logo
ES#:
2827261
Mfg#:
SSXAU048
Ships on Nov 5, 2026
$1577.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Valvesonic

ES#2827523 - SSXAU406 - Cat-Back Exhaust System - Valvesonic - 2.37" stainless steel with quad 100mm black Cerakote tips - Milltek Sport - Audi

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

Brand:
Milltek Sport - Corporate Logo
ES#:
2827523
Mfg#:
SSXAU406
Ships on Nov 9, 2026
$4460.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Res-X Resonator Delete Pipe And X-Pipe

ES#4315893 - 034-105-7051 - Res-X Resonator Delete Pipe And X-Pipe - Transform your exhaust note - 034Motorsport - Audi

Transform your exhaust note 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4315893
Mfg#:
034-105-7051
In Stock
$443.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Non-Resonated (Louder)

ES#3240938 - SSXAU657 - Cat-Back Exhaust System - Non-Resonated (Louder) - 2.50" stainless steel with quad GT-90 titanium tips - Milltek Sport - Audi

2.50" stainless steel with quad GT-90 titanium tips Fits models without factory rear sports differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3240938
Mfg#:
SSXAU657
Ships on Nov 9, 2026
$4158.99

This product was last offered at the strikethrough price on
08-17-2026

$4158.02 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust - Non Resonated

2.50" stainless steel with your choice of tip style

Brand:
Milltek Sport - Corporate Logo
ES#:
4164626
Mfg#:
B9NONRESONATED
Ships on Nov 9, 2026
Starting at $3507.46 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Res-X Resonator Delete

ES#3426667 - 034-105-7040 - 034Motorsport Res-X Resonator Delete - Unleashes a throaty growl and exotic tone that exudes the sound of performance - 034Motorsport - Audi

Unleashes a throaty growl and exotic tone that exudes the sound of performance 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3426667
Mfg#:
034-105-7040
Ships in 1 Business Day
$443.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust - Resonated

2.50" stainless steel with your choice of tip style

Brand:
Milltek Sport - Corporate Logo
ES#:
4164540
Mfg#:
B9RESONATED
Ships on Nov 9, 2026
Starting at $3463.00 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated With Exhaust Valves

ES#3240918 - SSXAU641 - Cat-Back Exhaust System - Resonated With Exhaust Valves - 2.50" stainless steel with quad GT-100 Cerakote black tips - Milltek Sport - Audi

2.50" stainless steel with quad GT-100 Cerakote black tips Fits models without factory rear sports differential
For vehicles without a sport differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3240918
Mfg#:
SSXAU641
Ships on Nov 9, 2026
$3752.99

This product was last offered at the strikethrough price on
08-17-2026

$3752.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B6 S4 Muffler Delete Kit - With 4.0" Black Chrome Tips

ES#4660138 - 042002la01KT - B6 S4 Muffler Delete Kit - With 4.0" Black Chrome Tips - Add an aggressive exhaust note to your B6 S4 so you can hear that V8 roar! - ECS - Audi

Add an aggressive exhaust note to your B6 S4 so you can hear that V8 roar! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4660138
Mfg#:
042002LA01KT
Ships in 5 Business Days
$463.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust

ES#2093800 - 15599 - Cat-Back Exhaust - 2.25" stainless steel with dual 3.5" polished stainless tips - Magnaflow - Audi

2.25" stainless steel with dual 3.5" polished stainless tips

Brand:
Magnaflow - Corporate Logo
ES#:
2093800
Mfg#:
15599
Back Ordered
$1813.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Exhaust Parts

Performance exhaust systems increase flows to improve throttle response and add power. Designed to reduce back pressure, our large selection of performance exhaust parts and performance exhaust systems is made from premium materials like stainless steel. Many are TIG welded and polished to make them as attractive as they are functional.

Let us help you find the parts that fit your Audi

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy Your Privacy Choices Cookie Policy ECS Tuning is part of Enthusiast Auto Holdings