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

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
affirm financing terms & conditions
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

Audi A4 Performance Downpipes

Sort By
Filter By
Return to Top

Catalytic Converter Install Kit

ES#2576283 - 8K0253115AKT2 - Catalytic Converter Install Kit - Contains all of the hardware you need to install new catalytic converters on your Audi - Assembled By ECS - Audi

Contains all of the hardware you need to install new catalytic converters on your Audi 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2576283
Mfg#:
8K0253115AKT2
In Stock
ON SALE! SAVE 12%
$98.99

This product was last offered at the strikethrough price on
05-02-2026

$86.85 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175271 - 251127 - Performance Stainless 2.5" Downpipe - High flow, stainless downpipe kit to be used with 2.5" aftermarket exhaust - Techtonics Tuning - Audi

High flow, stainless downpipe kit to be used with 2.5" aftermarket exhaust Fits automatic transmission models only - To be used with 2.5" aftermarket exhaust system

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175271
Mfg#:
251127
Ships on Aug 10, 2026
$286.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175267 - 251125 - Performance Stainless 2.5" Downpipe - High flow, stainless downpipe kit to be used with 2.5" aftermarket exhaust - Techtonics Tuning - Audi

High flow, stainless downpipe kit to be used with 2.5" aftermarket exhaust Fits quattro 5-speed transmission models only - To be used with 2.5" aftermarket exhaust system

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175267
Mfg#:
251125
Ships on Aug 6, 2026
$286.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

3" High Flow Catalytic Converter

ES#3449953 - CTSEXHTP0006-CAT - 3" High Flow Catalytic Converter - Designed to seamlessly fit in place of factory catalytic converter - CTS - Audi

Designed to seamlessly fit in place of factory catalytic converter For vehicles up through 2020

Brand:
CTS - Corporate Logo
ES#:
3449953
Mfg#:
CTSEXHTP0006-CAT
Back Ordered
ON SALE!
$279.99

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

$269.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter Installation Kit

ES#3028723 - 8D0253115KT3 - Catalytic Converter Installation Kit - Includes the necessary hardware and gaskets to install the catalytic converter - Assembled By ECS - Audi Volkswagen

Includes the necessary hardware and gaskets to install the catalytic converter 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3028723
Mfg#:
8D0253115KT3
In Stock
ON SALE! SAVE 21%
$59.99

This product was last offered at the strikethrough price on
05-02-2026

$47.50 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter Installation Kit

ES#2575495 - 8K0253115KT2 - Catalytic Converter Installation Kit - Contains all of the hardware you need to install a new catalytic converter - Assembled By ECS - Audi

Contains all of the hardware you need to install a new catalytic converter 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2575495
Mfg#:
8K0253115KT2
In Stock
ON SALE! SAVE 20%
$72.99

This product was last offered at the strikethrough price on
05-02-2026

$58.36 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175307 - 251229 - Performance Stainless 2.5" Downpipe - High flow, stainless downpipe kit to be used with 2.5" aftermarket exhaust - Techtonics Tuning - Audi

High flow, stainless downpipe kit to be used with 2.5" aftermarket exhaust Fits quattro manual transmission models only - To be used with 2.5" aftermarket exhaust system

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175307
Mfg#:
251229
Ships in 7 Business Days
$275.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Flow Cat Installation Kit

ES#4030561 - 034-105-A006 - High Flow Cat Installation Kit - Downpipe Hardware and Gasket Kit for B8 Audi A4/A5/Q5/Allroad equipped with the 2.0 TFSI engine. - 034Motorsport - Audi

Downpipe Hardware and Gasket Kit for B8 Audi A4/A5/Q5/Allroad equipped with the 2.0 TFSI engine.

Brand:
034Motorsport - Corporate Logo
ES#:
4030561
Mfg#:
034-105-A006
In Stock
ON SALE! SAVE 10%
$70.00

This product was last offered at the strikethrough price on
06-28-2026

$63.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Twisted Steel Down Pipe 3" 304 Stainless Steel W/ Cat

ES#4477611 - 48-36410-YC - Twisted Steel Down Pipe 3" 304 Stainless Steel W/ Cat - Includes a single high flow catalytic converter which is less restrictive than the factory converter providing maximum flow. - AFE - Audi

Includes a single high flow catalytic converter which is less restrictive than the factory converter providing maximum flow.

Brand:
AFE - Corporate Logo
ES#:
4477611
Mfg#:
48-36410-YC
Ships in 2 Business Days
20% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1441.99

This product was last offered at the strikethrough price on
07-19-2026

$1153.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sport Cat Downpipe W/200 CPSI Catalytic Converter

Delivers more power, especially in the low and mid rev range while adding a deep sporty sound. For vehicles up through 2020

Brand:
Armytrix - Corporate Logo
ES#:
4616390
Mfg#:
AUB9-CD
Ships in 10 Business Days
$1090.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter Installation Kit

ES#2575492 - 1H0253115DKT1 - Catalytic Converter Installation Kit - Contains all of the hardware you need to install a new catalytic converter on your A4 - Assembled By ECS - Audi

Contains all of the hardware you need to install a new catalytic converter on your A4 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2575492
Mfg#:
1H0253115DKT1
In Stock
ON SALE! SAVE 21%
$69.99

This product was last offered at the strikethrough price on
05-02-2026

$55.30 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket

ES#2718341 - 1H0253115 - Exhaust Gasket - Seals the downpipe to the catalytic converter - Rein - Audi Volkswagen

Seals the downpipe to the catalytic converter 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2718341
Mfg#:
1H0253115
In Stock
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - Priced Each

ES#6938 - n0102478 - Hex Bolt - Priced Each - Install new hardware with your new parts. M8x35 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M8x35 Secures the downpipe to the catalytic converter

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
6938
Mfg#:
N0102478
In Stock
$6.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Downpipes

The downpipe carries exhaust gas from the hot side of your turbo to the rest of the exhaust system. Replace a faulty catted downpipe with an OEM downpipe or upgrade for more performance with our selection of aftermarket performance downpipe options.

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 ECS Tuning is part of Enthusiast Auto Holdings