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Audi S4 Performance Parts & Upgrades

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008 Premium Diverter Valve - *Limited Edition* Red*

ES#4001248 - FMDV008R - 008 Premium Diverter Valve - *Limited Edition* Red* - Smaller, tougher and tuneable! *Limited edition red finish* - Forge - Audi Volkswagen Porsche

Smaller, tougher and tuneable! *Limited edition red finish* affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Limited Editions ONLY at ECS Tuning : Limited Stock so Act Fast

Brand:
Forge - Corporate Logo
ES#:
4001248
Mfg#:
FMDV008R
Ships in 4 Business Days
$180.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 Transmission Street Shield Aluminum Skid Plate

ES#3979295 - 027567ecs01KT - Audi B9 A4/S4 Transmission Street Shield Aluminum Skid Plate - Protect your transmission pan and improve aerodynamics - ECS - Audi

Protect your transmission pan and improve aerodynamics affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3979295
Mfg#:
027567ECS01KT
In Stock
ON SALE! SAVE 15%
$347.99

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

$295.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS "Stage 4" Front Big Brake Kit - B5/B6/B7/C5

ES#1896 - B5S4S4BBKRXS - ECS "Stage 4" Front Big Brake Kit - B5/B6/B7/C5 - Enhance braking performance with this plug-and-play upgrade! Featuring massive 6-piston calipers, lightweight 2-piece brake rotors, and all components needed for installation. - ECS - Audi

Enhance braking performance with this plug-and-play upgrade! Featuring massive 6-piston calipers, lightweight 2-piece brake rotors, and all components needed for installation. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
1896
Mfg#:
B5S4S4BBKRXS
In Stock
ON SALE!
$1999.99

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

$1899.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

ECS Wheel Spacers - 12.5mm (Pair)

ES#2603074 - 002411ECS02A13KT - ECS Wheel Spacers - 12.5mm (Pair) - Improve the look of your vehicle with spacers - ECS - Audi BMW Porsche

Improve the look of your vehicle with spacers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2603074
Mfg#:
002411ECS02A13KT
In Stock
ON SALE! SAVE 40%
$128.99

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

$77.21 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacers - 15mm (Pair)

ES#2603079 - 002411ECS03A15KT - ECS Wheel Spacers - 15mm (Pair) - Improve the look of your vehicle with spacers - ECS - Audi BMW Porsche

Improve the look of your vehicle with spacers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2603079
Mfg#:
002411ECS03A15KT
Ships on Jul 9, 2026
Auto Notify
ON SALE! SAVE 35%
$134.09

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

$87.16 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear RedStuff Performance Brake Pad Set

ES#4031324 - DP32254C - Rear RedStuff Performance Brake Pad Set - A high performance street pad, featuring Kevlar technology. - EBC - Audi

A high performance street pad, featuring Kevlar technology. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
EBC - Corporate Logo
ES#:
4031324
Mfg#:
DP32254C
In Stock
5% off MSRP

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

$151.59

This product was last offered at the strikethrough price on
06-07-2026

$144.01 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear HPS 5.0 Performance Brake Pad Set

ES#4000469 - HB866B.652 - Rear HPS 5.0 Performance Brake Pad Set - Next generation high performance street brake pad offering greater stopping power and pedal feel, with very low dust. - Hawk - Audi

Next generation high performance street brake pad offering greater stopping power and pedal feel, with very low dust. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hawk - Corporate Logo
ES#:
4000469
Mfg#:
HB866B.652
In Stock
$197.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front V5 Dimpled & Slotted Brake Rotors - Set (345x30)

ES#4668212 - 8K0615301M-XS - Front V5 Dimpled & Slotted Brake Rotors - Set (345x30) - Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. - ECS - Audi

Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4668212
Mfg#:
8K0615301M-XS
Ships in 1-3 days
ON SALE!
$509.99

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

$494.68 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Special Active Shocks & Struts Kit

ES#3564213 - 82451264KT - Special Active Shocks & Struts Kit - 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

Brand:
Koni - Corporate Logo
ES#:
3564213
Mfg#:
82451264KT
In Stock
ON SALE! SAVE 20%
$729.99

This product was last offered at the strikethrough price on
02-27-2026

$581.70 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi/Porsche Thrust Arm Monoball Upgrade - Pre-Installed in Meyle HD Arms (M14 Ball Joints)

ES#4389690 - 006418LA01 - Audi/Porsche Thrust Arm Monoball Upgrade - Pre-Installed in Meyle HD Arms (M14 Ball Joints) - Eliminate deflection caused by stock rubber bushings! - ECS - Audi Porsche

Eliminate deflection caused by stock rubber bushings! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits models from production date 11/3/2009 (M14 Ball Joints)

Brand:
ECS - Corporate Logo
ES#:
4389690
Mfg#:
006418LA01
In Stock
ON SALE!
$732.99

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

$710.35 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

S34 Carbon Fiber Intake

ES#4304717 - 034-108-1027 - S34 Carbon Fiber Intake - Improved power, supercharger sound, and overall performance. - 034Motorsport - Audi

Improved power, supercharger sound, and overall performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
CARB certified for sale in all 50 states

Brand:
034Motorsport - Corporate Logo
ES#:
4304717
Mfg#:
034-108-1027
EO#:
D-850-2
In Stock
$455.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet X-Brace - Black - Audi B8.5/Porsche Macan

ES#4220368 - 004802la01aKT - Billet X-Brace - Black - Audi B8.5/Porsche Macan - Improve steering feel and handling! - ECS - Audi Porsche

Improve steering feel and handling! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits Facelift models from the 2013 model year.

Brand:
ECS - Corporate Logo
ES#:
4220368
Mfg#:
004802LA01AKT
Ships on Oct 29, 2026
Auto Notify
ON SALE! SAVE 30%
$549.99

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

$384.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

OE Sport Springs - Set

ES#1876359 - 50361-55 - OE Sport Springs - Set - Mild lowering for the daily driver. Average lowering of 1.2"F 1.2" R - H&R - Audi

Mild lowering for the daily driver. Average lowering of 1.2"F 1.2" R 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#:
1876359
Mfg#:
50361-55
In Stock
$269.99

This product was last offered at the strikethrough price on
02-03-2026

$257.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Competition Intercooler Kit

ES#4017614 - 200001120 - Competition Intercooler Kit - The high performance intercooler core provides a 134% larger frontal area and 105% more volume compared to the stock mounted intercooler. - Wagner Tuning - Audi

The high performance intercooler core provides a 134% larger frontal area and 105% more volume compared to the stock mounted intercooler. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
**This kit is for US vehicle fitment**

Brand:
Wagner Tuning - Corporate Logo
ES#:
4017614
Mfg#:
200001120
Ships in 8 Business Days
$1040.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Build Your Own Audi B8/8.5 S4 3.0T Valved Cat Back Exhaust System - Titanium

ES#4759973 - 008553ECS03 - Build Your Own Audi B8/8.5 S4 3.0T Valved Cat Back Exhaust System - Titanium - Experience your driving passion with our ECS Valved Exhaust System and control your sound with our valved muffler design - ECS - Audi

Experience your driving passion with our ECS Valved Exhaust System and control your sound with our valved muffler design affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4759973
Mfg#:
008553ECS03
In Stock
ON SALE!
Starting at $2818.43 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 Facelift Rear Diffuser & Trunk Spoiler

ES#4751213 - 026861ECS01EBKT - Audi B8.5 S4 Facelift Rear Diffuser & Trunk Spoiler - Add some aggressive styling to your Audi! - Enthusiast Bundles - Audi

Add some aggressive styling to your Audi! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits facelift B8.5 (2013+) models only

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751213
Mfg#:
026861ECS01EBKT
In Stock
ON SALE! SAVE 49%
$785.48

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

$399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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