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Audi S4 Performance Parts & Upgrades

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APR Intake System - 3.0T S4/S5

ES#4876483 - CI100072 - APR Intake System - 3.0T S4/S5 - Add a sporty, refined tone without being overbearing - APR - Audi

Add a sporty, refined tone without being overbearing Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
4876483
Mfg#:
CI100072
In Stock
11% off MSRP

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

$652.99

This product was last offered at the strikethrough price on
07-22-2026

$579.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EA839 3.0T Dynamic+ Performance Software Package

ES#4877267 - 034-103-292Q - EA839 3.0T Dynamic+ Performance Software Package - Unleash up to 774HP/716TQ by transforming your Audi EA839 3.0T with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! - 034Motorsport - Audi

Unleash up to 774HP/716TQ by transforming your Audi EA839 3.0T with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! For 3.0T Turbocharged models from the 2020 model year.

Brand:
034Motorsport - Corporate Logo
ES#:
4877267
Mfg#:
034-103-292Q
Ships in 1 Business Day
Starting at $180.00 USD
Customize
Free Shipping

Performance Ignition Service Kit

ES#4475290 - 06m905606f1KT - Performance Ignition Service Kit - Includes six Red APR coil packs and OEM spark plugs to service your ignition system - Assembled By ECS - Audi

Includes six Red APR coil packs and OEM spark plugs to service your ignition system 10X Entries For Our 25th Anniversary Sweepstakes!
CARB certified for sale in all 50 states

Brand:
Assembled By ECS - Corporate Logo
ES#:
4475290
Mfg#:
06M905606F1KT
EO#:
D-783-5
In Stock
$409.19 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 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2603079
Mfg#:
002411ECS03A15KT
In Stock
ON SALE! SAVE 25%
$136.99

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

$102.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B6/B7 S4 Luft-Technik Performance Intake System

ES#4845350 - 012267LA01 - B6/B7 S4 Luft-Technik Performance Intake System - Engineered for maximum power and induction sound! Featuring a sealed aluminum heatshield, silicone inlet hose, and a high-flow conical air filter. - ECS - Audi

Engineered for maximum power and induction sound! Featuring a sealed aluminum heatshield, silicone inlet hose, and a high-flow conical air filter. 10X Entries For Our 25th Anniversary Sweepstakes!
10X Entries For Our Spin To Win Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4845350
Mfg#:
012267LA01
In Stock
ON SALE! SAVE 25%
$480.99

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

$360.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

KOMPACT EM BOV VR18 Dual Port

ES#4745463 - TS-0223-1079 - KOMPACT EM BOV VR18 Dual Port - Seamlessly install a Kompact EM Valve without the need for adaptors, hoses, or additional assembly. - TurboSmart - Audi

Seamlessly install a Kompact EM Valve without the need for adaptors, hoses, or additional assembly.

Brand:
TurboSmart - Corporate Logo
ES#:
4745463
Mfg#:
TS-0223-1079
In Stock
10% off MSRP

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

$350.99

This product was last offered at the strikethrough price on
07-22-2026

$315.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi 3.0T Performance Overdrive Crank Pulley - 187.3mm

ES#4820683 - 025510ECS01 - Audi 3.0T Performance Overdrive Crank Pulley - 187.3mm - Spin the supercharger faster without affecting the accessory drive system - ECS - Audi Volkswagen Porsche

Spin the supercharger faster without affecting the accessory drive system 10X Entries For Our 25th Anniversary Sweepstakes!
10X Entries For Our Spin To Win Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4820683
Mfg#:
025510ECS01
In Stock
ON SALE! SAVE 25%
$344.99

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

$258.74 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. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
1896
Mfg#:
B5S4S4BBKRXS
In Stock
ON SALE!
$2039.99

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

$1937.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Dynamic+ Billet Adjustable Front Sway Bar End Links

ES#4381944 - 034-402-4033 - Dynamic+ Billet Adjustable Front Sway Bar End Links - Replace your flimsy, imprecise OEM sway bar end links with these performance engineered Dynamic+ Billet Adjustable Front Sway Bar End Links from 034Motorsport - 034Motorsport - Audi

Replace your flimsy, imprecise OEM sway bar end links with these performance engineered Dynamic+ Billet Adjustable Front Sway Bar End Links from 034Motorsport

Brand:
034Motorsport - Corporate Logo
ES#:
4381944
Mfg#:
034-402-4033
Back Ordered
Auto Notify
$168.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B5/B6/B7 A4/S4 Street Shield Skid Plate Kit

ES#4840231 - 030456la01KT - Audi B5/B6/B7 A4/S4 Street Shield Skid Plate Kit - Protect vital drivetrain and chassis components from costly damage with this durable 7GA aluminum skid plate! - ECS - Audi Volkswagen

Protect vital drivetrain and chassis components from costly damage with this durable 7GA aluminum skid plate! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4840231
Mfg#:
030456LA01KT
Ships in 4 Business Days
ON SALE!
$396.99

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

$385.08 USD
This product is lifetime replacement eligible Lifetime Replacement

P3 Gauge - Audi A4/S4/RS4/A5/S5/RS5 B8

ES#4070773 - L3P3AB8X - P3 Gauge - Audi A4/S4/RS4/A5/S5/RS5 B8 - Powerful plug-and-play multifunction display. - P3 Gauges - Audi

Powerful plug-and-play multifunction display.

Brand:
P3 Gauges - Corporate Logo
ES#:
4070773
Mfg#:
L3P3AB8X
In Stock
$389.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

2.0T Coil Pack Conversion Kit - Anodized Black Plates with Red Coil Packs

ES#2723130 - 002686ECSKT - 2.0T Coil Pack Conversion Kit - Anodized Black Plates with Red Coil Packs - Unload your ICM's and update your 2.7T ignition system! - ECS - Audi

Unload your ICM's and update your 2.7T ignition system! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2723130
Mfg#:
002686ECSKT
In Stock
ON SALE!
$693.99

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

$659.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

AWE ColdFront Intercooler - Audi B9 S4/S5 3.0T

ES#4044047 - 4510-11060 - AWE ColdFront Intercooler - Audi B9 S4/S5 3.0T - Offers a 130% increase in frontal surface area and a massive 83% increase in volume over the factory B9 intercooler - AWE - Audi

Offers a 130% increase in frontal surface area and a massive 83% increase in volume over the factory B9 intercooler

Brand:
AWE - Corporate Logo
ES#:
4044047
Mfg#:
4510-11060
In Stock
$945.00 USD
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Transmission Street Shield Skid Plate Kit - Audi B8

ES#3411961 - 017881ecs01KT - ECS Tuning Transmission Street Shield Skid Plate Kit - Audi B8 - Protect your vehicle's transmission pan with a 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's transmission pan with a 4mm thick aluminum skid plate 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3411961
Mfg#:
017881ECS01KT
In Stock
ON SALE! SAVE 20%
$505.70

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

$404.56 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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.

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