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 S4 Performance Parts & Upgrades

Sort By
Filter By
Return to Top

DRA Series Wheel Spacer - 20mm (1 Pair) - Black

ES#4753507 - 40555712SW - DRA Series Wheel Spacer - 20mm (1 Pair) - Black - Fine tune your stance and improve handling - H&R - Audi Volkswagen

Fine tune your stance and improve handling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
4753507
Mfg#:
40555712SW
Ships in 3 Business Days
$149.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 1

Average gain of 22 horsepower and 20 lb-ft of torque affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Tunezilla - Corporate Logo
ES#:
3097347
Mfg#:
42-V8-340-1
Ships in 7 Business Days
$599.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RaceChip XLR Throttle Controller With App Control

ES#4708646 - 999871 - RaceChip XLR Throttle Controller With App Control - Eliminate the delay in throttle response times with a simple XLR addition! Allows for Bluetooth connectivity for easy App based control. - Race Chip - Audi

Eliminate the delay in throttle response times with a simple XLR addition! Allows for Bluetooth connectivity for easy App based control. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Race Chip - Corporate Logo
ES#:
4708646
Mfg#:
999871
Ships in 3 Business Days
$299.00 USD
Free Shipping
on orders $49 and up

Revo Carbon Series Intake Kit

ES#4499836 - RA841M200200 - Revo Carbon Series Intake Kit - The Carbon Series has performance woven into the core of every product. - REVO - Audi

The Carbon Series has performance woven into the core of every product. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with CWGD engine code.

Brand:
REVO - Corporate Logo
ES#:
4499836
Mfg#:
RA841M200200
In Stock
$595.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

GT100 Exhaust Titanium Tips - Quad

ES#3247851 - MSVW374X4 - GT100 Exhaust Titanium Tips - Quad - 100mm GT style exhaust tips for the left and right side of the vehicle - Milltek Sport - Audi Volkswagen

100mm GT style exhaust tips for the left and right side of the vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
3247851
Mfg#:
MSVW374X4
Ships in 3 Business Days
$594.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Snub Mount With Bracket

ES#3219171 - 034-509-2006 - Snub Mount With Bracket - Greatly reduces unwanted engine movement without excess vibration - 034Motorsport - Audi

Greatly reduces unwanted engine movement without excess vibration affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3219171
Mfg#:
034-509-2006
In Stock
$118.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B5/C5 2.7T Performance Pack

ES#4017073 - b5c527tpplvl1KT - B5/C5 2.7T Performance Pack - Performance kit composed of a careful selection of our best sellers, offering valuable performance gains at a 'bang for the buck' price point - Assembled By ECS - Audi

Performance kit composed of a careful selection of our best sellers, offering valuable performance gains at a 'bang for the buck' price point affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4017073
Mfg#:
B5C527TPPLVL1KT
Ships on Nov 19, 2026
$586.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Special Active Front And Rear Struts

ES#4698700 - 82451406KT - Special Active Front And Rear Struts - Superior handling without compromising ride quality - Koni - Audi

Superior handling without compromising ride quality affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vehicle will lose Adaptive Dampening Control

Brand:
Koni - Corporate Logo
ES#:
4698700
Mfg#:
82451406KT
Ships in 5 Business Days
ON SALE! SAVE 20%
$734.99

This product was last offered at the strikethrough price on
02-06-2026

$586.34 USD
Free Shipping
on orders $49 and up

Carbon Fiber Mirror Cap Set - Audi B9 A4/A5/S4/S5

ES#3411933 - 024564ECS02 - Carbon Fiber Mirror Cap Set - Audi B9 A4/A5/S4/S5 - Upgrade your exterior look - ECS - Audi

Upgrade your exterior look affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles without lane change assist

Brand:
ECS - Corporate Logo
ES#:
3411933
Mfg#:
024564ECS02
Ships on Oct 22, 2026
ON SALE! SAVE 20%
$365.99

This product was last offered at the strikethrough price on
06-13-2026

$292.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Supercharger Drive Pulley Upgrade Kit

ES#3219340 - ms100135KT - APR Supercharger Drive Pulley Upgrade Kit - A healthy bump in horsepower and torque across the entire RPM range - Includes APR drive pulley, APR installation tool, and correct length drive belt - APR - Audi Porsche

A healthy bump in horsepower and torque across the entire RPM range - Includes APR drive pulley, APR installation tool, and correct length drive belt Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
APR Stage II software is required to run any upgraded Pulley configuration and is sold separately - Vehic

Brand:
APR - Corporate Logo
ES#:
3219340
Mfg#:
MS100135KT
Ships in 5 Business Days
$583.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EMD Wheel Spacer & Bolt Kit - 10mm With Conical Seat Bolts

ES#4430371 - EMDSPACER10571CB - EMD Wheel Spacer & Bolt Kit - 10mm With Conical Seat Bolts - Includes everything you need to install spacers on two wheels - Emmanuele Design - Audi Volkswagen

Includes everything you need to install spacers on two wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
Emmanuele Design - Corporate Logo
ES#:
4430371
Mfg#:
EMDSPACER10571CB
In Stock
Limited Qty Sale
$110.00

This product was last offered at the strikethrough price on
06-01-2026

$96.99 USD
Free Shipping
on orders $49 and up

19" Wheel Spacer Flush Fit Kit - Black Bolts

ES#4476079 - B9FLUSHKT - 19" Wheel Spacer Flush Fit Kit - Black Bolts - Includes H&R spacers & Black bolts to obtain a flush look on your OE 19" wheels - Assembled By ECS - Audi

Includes H&R spacers & Black bolts to obtain a flush look on your OE 19" wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4476079
Mfg#:
B9FLUSHKT
Ships in 3 Business Days
ON SALE!
$299.99

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

$290.81 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supertech Inconel Exhaust Valve Kit

ES#3647476 - ST-AEVI-1103KT1 - Supertech Inconel Exhaust Valve Kit - Stock sized valve head diameter, factory triple groove keeper setup - Includes Supertech valves and IE valve seals - Assembled By ECS - Audi

Stock sized valve head diameter, factory triple groove keeper setup - Includes Supertech valves and IE valve seals affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
*Existing factory triple-groove valve keepers are to be reused*

Brand:
Assembled By ECS - Corporate Logo
ES#:
3647476
Mfg#:
ST-AEVI-1103KT1
Ships in 7 Business Days
$573.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Air Filter, Conical, 3.5" Inlet

ES#4858330 - 034-108-B013 - Performance Air Filter, Conical, 3.5" Inlet - Replacement air filter for the X34 Cold Air Intake (034-108-1002) - 034Motorsport - Audi

Replacement air filter for the X34 Cold Air Intake (034-108-1002) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4858330
Mfg#:
034-108-B013
In Stock
$76.99

This product was last offered at the strikethrough price on
04-15-2026

$57.00 USD
Free Shipping

Neuspeed Power Module EVO - B9 S4 Quattro

ES#4906476 - 64.02.09 - Neuspeed Power Module EVO - B9 S4 Quattro - Proprietary tune box designed specifically for the EA839 3.0L TFSI with gains of +40 Horsepower / 70 ft-lb of Torque! - Neuspeed - Audi

Proprietary tune box designed specifically for the EA839 3.0L TFSI with gains of +40 Horsepower / 70 ft-lb of Torque! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Neuspeed - Corporate Logo
ES#:
4906476
Mfg#:
64.02.09
Ships in 2 Business Days
$569.99 USD
Free Shipping

More About Performance Parts & Upgrades

All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.

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