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Audi S4 Performance Parts & Upgrades

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IE HPFP Internal Upgrade

ES#4706077 - IEFUVZ1 - IE HPFP Internal Upgrade - The largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and Stage 1/2 Plus ECU tunes. - Integrated Engineering - Audi

The largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and Stage 1/2 Plus ECU tunes.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4706077
Mfg#:
IEFUVZ1
In Stock
$419.99 USD
Free Shipping
on orders $49 and up

440cc Fuel Injectors - Set Of Six

ES#1895511 - 0280155968 - 440cc Fuel Injectors - Set Of Six - A drop-in injector commonly referred to as 'Green Giants' - Bosch - Audi

A drop-in injector commonly referred to as 'Green Giants' We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
1895511
Mfg#:
0280155968
In Stock
$251.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 Intercooler Charge Pipe Kit

ES#3638868 - 023880ecs01aKT - Audi B9 S4 Intercooler Charge Pipe Kit - Increase intake air flow with our high flow charge pipes for your ECS Tuning or OEM intercooler! - ECS - Audi

Increase intake air flow with our high flow charge pipes for your ECS Tuning or OEM intercooler! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3638868
Mfg#:
023880ECS01AKT
In Stock
ON SALE! SAVE 20%
$448.99

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

$359.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Motor Mount Kit - Street Density

ES#2893870 - 034-509-0007KT - Density Line Motor Mount Kit - Street Density - Void-free and fluid-free, eliminating the slop associated with the factory mounts - 034Motorsport - Audi Volkswagen

Void-free and fluid-free, eliminating the slop associated with the factory mounts 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2893870
Mfg#:
034-509-0007KT
In Stock
$256.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JHM Solid Short Throw Shifter

ES#4046142 - STS-B8AS4AS5 - JHM Solid Short Throw Shifter - If you desire the ultimate in shifting, the JH Motorsports B8 A4/A5/S4 and S5 Solid Short Throw Shifter is the perfect solution! - JH Motorsports - Audi

If you desire the ultimate in shifting, the JH Motorsports B8 A4/A5/S4 and S5 Solid Short Throw Shifter is the perfect solution!

Brand:
JH Motorsports - Corporate Logo
ES#:
4046142
Mfg#:
STS-B8AS4AS5
Ships in 2 Business Days
$299.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Solid Rear Sway Bar - 25.4mm

ES#2864583 - 034-402-1000 - Solid Rear Sway Bar - 25.4mm - Substantially reduce understeer and body roll - 034Motorsport - Audi

Substantially reduce understeer and body roll 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2864583
Mfg#:
034-402-1000
In Stock
$332.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Strut Tower Brace - Audi B8 A4/A5/S4/S5

ES#3195022 - 008049ecs01KT - Carbon Fiber Strut Tower Brace - Audi B8 A4/A5/S4/S5 - Provides additional support to the strut towers for flex reduction to enhance your driving experience - ECS - Audi

Provides additional support to the strut towers for flex reduction to enhance your driving experience 10X Entries Into Our F80 M3 Sweepstakes
Vehicle must feature an M8 stud on the passenger shock tower for proper install. Please see product photo
Does not work with the factory intake system

Brand:
ECS - Corporate Logo
ES#:
3195022
Mfg#:
008049ECS01KT
In Stock
ON SALE!
$355.99

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

$345.31 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Throttle Body Upgrade Kit

ES#3647325 - IEINCG3 - Throttle Body Upgrade Kit - Remove the final power restriction on your 3.0T with an over 20% higher flowing throttle body, fully releasing the complete power potential from your factory supercharger. - Integrated Engineering - Audi

Remove the final power restriction on your 3.0T with an over 20% higher flowing throttle body, fully releasing the complete power potential from your factory supercharger. * Existing IE Dual Pulley Upgrade Required *

Brand:
Integrated Engineering - Corporate Logo
ES#:
3647325
Mfg#:
IEINCG3
In Stock
$879.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Cross Drilled UV Coated Brake Rotors - Pair (345x30)

ES#4491561 - 8k0615301kxKT - Front Cross Drilled UV Coated Brake Rotors - Pair (345x30) - Features Brembo's special UV paint treatment that guarantees superior corrosion resistance. - Brembo - Audi

Features Brembo's special UV paint treatment that guarantees superior corrosion resistance. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Brembo - Corporate Logo
ES#:
4491561
Mfg#:
8K0615301KXKT
In Stock
$341.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacers - 10mm (Pair)

ES#2603071 - 002411ECS02A10KT - ECS Wheel Spacers - 10mm (Pair) - Improve the look of your vehicle with spacers - ECS - Audi BMW Porsche

Improve the look of your vehicle with spacers 10X Entries Into Our F80 M3 Sweepstakes
These spacers are measured and designed to fit factory wheels. Not all aftermarket wheels will work with

Brand:
ECS - Corporate Logo
ES#:
2603071
Mfg#:
002411ECS02A10KT
In Stock
ON SALE! SAVE 10%
$106.99

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

$96.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B6/B7 Manual - Driveshaft Center Support Bearing Carrier

ES#4616120 - 012185la01KT - B6/B7 Manual - Driveshaft Center Support Bearing Carrier - As our beloved B6/B7 age the stock center support bearing starts to wear out causing drivetrain clunk. This upgrade keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing - ECS - Audi

As our beloved B6/B7 age the stock center support bearing starts to wear out causing drivetrain clunk. This upgrade keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4616120
Mfg#:
012185LA01KT
In Stock
ON SALE! SAVE 25%
$302.99

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

$227.24 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

B5 A4/S4 Manual - Driveshaft Center Support Bearing Carrier

ES#4609176 - 012158la01kt - B5 A4/S4 Manual - Driveshaft Center Support Bearing Carrier - As our beloved B5's age the stock center support bearing starts to wear out causing drivetrain clunk. This upgraded unit keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing - ECS - Audi

As our beloved B5's age the stock center support bearing starts to wear out causing drivetrain clunk. This upgraded unit keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing 10X Entries Into Our F80 M3 Sweepstakes
Manual Transmission B5 A4/S4

Brand:
ECS - Corporate Logo
ES#:
4609176
Mfg#:
012158LA01KT
Ships on Dec 28, 2026
ON SALE! SAVE 25%
$302.99

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

$227.24 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

IE B8 3.0T Performance Downpipes

ES#3470770 - IEEXCG2 - IE B8 3.0T Performance Downpipes - Quick and easy way to add horsepower and an aggressive sound! 304 stainless steel 2.5" tubing. - Integrated Engineering - Audi

Quick and easy way to add horsepower and an aggressive sound! 304 stainless steel 2.5" tubing.

Brand:
Integrated Engineering - Corporate Logo
ES#:
3470770
Mfg#:
IEEXCG2
In Stock
$769.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 3 Daily Clutch Kit

Designed for high-powered street cars while capable enough to handle the track. Conservatively rated at 600ft/lbs.

Brand:
South Bend Clutch - Corporate Logo
ES#:
3698205
Mfg#:
K70619F-SS-O
Ships in 1 Business Day
$3841.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 Luft-Technik Intake Air Scoop v2

ES#4315808 - 008184LA01 - Audi B8/B8.5 Luft-Technik Intake Air Scoop v2 - Extends farther down behind the grille to direct more air to the intake system - ECS - Audi

Extends farther down behind the grille to direct more air to the intake system 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4315808
Mfg#:
008184LA01
In Stock
ON SALE! SAVE 10%
$141.99

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

$127.79 USD
Free Shipping
on orders $49 and up
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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