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 Cat-Back Exhausts

Sort By
Filter By
Return to Top

Cat-Back Exhaust System - Non-Resonated

ES#2827394 - SSXAU268 - Cat-Back Exhaust System - Non-Resonated - 2.37" stainless steel with quad 80mm polished tips - Milltek Sport - Audi

2.37" stainless steel with quad 80mm polished tips Up to the 2012 model year

Brand:
Milltek Sport - Corporate Logo
ES#:
2827394
Mfg#:
SSXAU268
Ships on Nov 20, 2026
$2844.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4/S5 Sportback 3.0T Valved Exhaust System & Luft-Technik Intake System

ES#4751050 - 026018ECSEBKT - Audi B9 S4/S5 Sportback 3.0T Valved Exhaust System & Luft-Technik Intake System - Improve the sound and performance of your vehicle with a valved catback & Luft-Technik Intake System - Enthusiast Bundles - Audi

Improve the sound and performance of your vehicle with a valved catback & Luft-Technik Intake System Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751050
Mfg#:
026018ECSEBKT
Ships on Dec 29, 2026
ON SALE! SAVE 23%
$3293.99

This product was last offered at the strikethrough price on
05-05-2026

$2549.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Non-Resonated

ES#2827370 - SSXAU240 - Cat-Back Exhaust System - Non-Resonated - 2.37" stainless steel with dual black Cerakote oval tips - Milltek Sport - Audi

2.37" stainless steel with dual black Cerakote oval tips Up to the 2012 model year

Brand:
Milltek Sport - Corporate Logo
ES#:
2827370
Mfg#:
SSXAU240
Ships on Nov 20, 2026
$2771.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/8.5 S4 3.0T Valved Cat Back Exhaust & Kohlefaser Luft-Technik Intake System

ES#4751087 - 008553ECS03EB2KT - Audi B8/8.5 S4 3.0T Valved Cat Back Exhaust & Kohlefaser Luft-Technik Intake System - Enhance the sound and performance of your S4 with an ECS Tuning cat-back and a Kohlefaser Luft-Technik Intake System - Enthusiast Bundles - Audi

Enhance the sound and performance of your S4 with an ECS Tuning cat-back and a Kohlefaser Luft-Technik Intake System Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751087
Mfg#:
008553ECS03EB2KT
Ships on May 28, 2027
ON SALE! SAVE 28%
$3351.75

This product was last offered at the strikethrough price on
05-05-2026

$2399.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CatBack Exhaust System - Resonated

ES#3107695 - 762503kt - CatBack Exhaust System - Resonated - Stainless steel system with X-pipe - Supersprint - Audi

Stainless steel system with X-pipe

Brand:
Supersprint - Corporate Logo
ES#:
3107695
Mfg#:
762503KT
Ships on Feb 4, 2027
$2178.99 USD
Free Shipping

IE Valved Catback Exhaust, Audi B9 S4

ES#5527498 - IEEXCK13 - IE Valved Catback Exhaust, Audi B9 S4 - This catback comes with app-controlled valves: open them for the full note, close them for a quiet cruise, no extra hardware to keep track of. - Integrated Engineering - Audi

This catback comes with app-controlled valves: open them for the full note, close them for a quiet cruise, no extra hardware to keep track of.

Brand:
Integrated Engineering - Corporate Logo
ES#:
5527498
Mfg#:
IEEXCK13
Ships in 4 Business Days
$1999.99 USD
Free Shipping

2.5" Resonated Half Exhaust System

ES#3969343 - SAU044 - 2.5" Resonated Half Exhaust System - 2.5" half-exhaust built to last with 304 stainless steel and quad polished daytona tips - Scorpion - Audi

2.5" half-exhaust built to last with 304 stainless steel and quad polished daytona tips

Brand:
Scorpion - Corporate Logo
ES#:
3969343
Mfg#:
SAU044
Ships in 2 Business Days
$1917.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#1892708 - 16586 - Cat-Back Exhaust System - 2.5" stainless steel with dual 4" polished stainless tips - Magnaflow - Audi

2.5" stainless steel with dual 4" polished stainless tips

Brand:
Magnaflow - Corporate Logo
ES#:
1892708
Mfg#:
16586
Back Ordered
$1646.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#2827260 - SSXAU046 - Cat-Back Exhaust System - 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#:
2827260
Mfg#:
SSXAU046
Ships on Nov 20, 2026
$1776.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#4164713 - B6S4RESONATED - Cat-Back Exhaust System - Resonated - 2.25" stainless steel with your choice of tip style - Milltek Sport - Audi

2.25" stainless steel with your choice of tip style

Brand:
Milltek Sport - Corporate Logo
ES#:
4164713
Mfg#:
B6S4RESONATED
Ships on Dec 10, 2026
Starting at $1685.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Cat-Back Exhaust System

ES#3107254 - 14902 - Performance Cat-Back Exhaust System - 3" stainless steel with dual 4.63" polished stainless tips - Borla - Audi

3" stainless steel with dual 4.63" polished stainless tips

Brand:
Borla - Corporate Logo
ES#:
3107254
Mfg#:
14902
In Stock at Vendor
$1289.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Sport & Sound Cat-Back Exhaust System - Resonated

ES#3514254 - 764440 - Sport & Sound Cat-Back Exhaust System - Resonated - Stainless steel resonated cat-back exhaust system with dual round, polished tips - Supersprint - Audi

Stainless steel resonated cat-back exhaust system with dual round, polished tips

Brand:
Supersprint - Corporate Logo
ES#:
3514254
Mfg#:
764440
In Stock
ON SALE! SAVE 63%
$2734.99

This product was last offered at the strikethrough price on
10-19-2026

$1000.00 USD
Free Shipping

Cabriolet Brace Spacer Kit for Performance Exhaust

Allows you to make the room you need to fit most performance exhaust systems on the market. For cabriolet models only

Brand:
JH Motorsports - Corporate Logo
ES#:
4046053
Mfg#:
CABSPACERKIT
Ships in 10 Business Days
$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B5 S4 Valved Cat Back Exhaust & Street Shield Aluminum Skid Plate Kit

ES#4751086 - 041750LA01EBKT - B5 S4 Valved Cat Back Exhaust & Street Shield Aluminum Skid Plate Kit - Enhance the sound of your vehicle and keep it safe with a Street Shield Aluminum Skid Plate Kit - Enthusiast Bundles - Audi

Enhance the sound of your vehicle and keep it safe with a Street Shield Aluminum Skid Plate Kit Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751086
Mfg#:
041750LA01EBKT
In Stock
ON SALE! SAVE 13%
$1675.99

This product was last offered at the strikethrough price on
05-05-2026

$1449.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Cat-Back Exhausts

Let your engine sing with a performance cat-back exhaust system from the best exhaust manufacturers in the business.

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