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Audi S4 Performance Parts & Upgrades

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Front 2-Piece Floating Brake Rotors - Pair (345x30)

ES#4429968 - 034-301-1007 - Front 2-Piece Floating Brake Rotors - Pair (345x30) - Lightweight rotors weighing 19lbs each! - 034Motorsport - Audi Porsche

Lightweight rotors weighing 19lbs each! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4429968
Mfg#:
034-301-1007
In Stock
$1042.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Facelift Front Lip & Gloss Black Grille Accent Set

ES#4751232 - 027963ECS01EBKT - Audi B8.5 S4 / A4 S-Line Facelift Front Lip & Gloss Black Grille Accent Set - Upgrade your exterior styling! - Enthusiast Bundles - Audi

Upgrade your exterior styling! 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

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751232
Mfg#:
027963ECS01EBKT
In Stock
ON SALE! SAVE 34%
$649.08

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

$429.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Performance B5 S4 All Aluminum Radiator

ES#3220600 - 7071 - High Performance B5 S4 All Aluminum Radiator - Great option if youre looking to modify, upgrade, or simply keep up with the maintenance - CSF - Audi

Great option if you’re looking to modify, upgrade, or simply keep up with the maintenance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CSF - Corporate Logo
ES#:
3220600
Mfg#:
7071
In Stock
$559.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2.7T Silicone Boost Hose Kit - Black

ES#2800108 - 003558ECS01AKT - 2.7T Silicone Boost Hose Kit - Black - Add a better flowing, stronger set of hoses to your vehicle and keep it running strong. - ECS - Audi

Add a better flowing, stronger set of hoses to your vehicle and keep it running strong. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2800108
Mfg#:
003558ECS01AKT
In Stock
ON SALE! SAVE 25%
$371.99

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

$278.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Front Lip Spoiler - Audi B9 A4/S4

ES#3146390 - 019196ECS01A - Carbon Fiber Front Lip Spoiler - Audi B9 A4/S4 - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits up to 2019 model year with *pre-facelift* front bumpers

Brand:
ECS - Corporate Logo
ES#:
3146390
Mfg#:
019196ECS01A
In Stock
ON SALE! SAVE 41%
$875.99

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

$515.77 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

SuperDuper Turbo Inlet Pipe

ES#4642915 - 034-108-5036 - SuperDuper Turbo Inlet Pipe - Designed to maximize performance for Dynamic+ Stage 3 Hybrid Turbo Tuning Software - 034Motorsport - Audi

Designed to maximize performance for Dynamic+ Stage 3 Hybrid Turbo Tuning Software affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4642915
Mfg#:
034-108-5036
In Stock
$180.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Autotech High Volume Fuel Pump Kit

ES#4829926 - 10-127-113K - Autotech High Volume Fuel Pump Kit - EA839 precision-machined internals - Autotech - Audi Porsche

EA839 precision-machined internals affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Autotech - Corporate Logo
ES#:
4829926
Mfg#:
10-127-113K
Ships in 1 Business Day
$339.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Competition Gen.2 Intercooler Kit Audi 2.7 BiTurbo

ES#4781416 - 200001006.SINGLE - Competition Gen.2 Intercooler Kit Audi 2.7 BiTurbo - eliminate any constraints present in the OEM setup - Wagner Tuning - Audi

eliminate any constraints present in the OEM setup affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Wagner Tuning - Corporate Logo
ES#:
4781416
Mfg#:
200001006.SINGLE
In Stock
$790.00 USD
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer & Bolt Kit - 15mm With Black Conical Seat Bolts

ES#2748194 - ECS10157KTWBC1 - ECS Wheel Spacer & Bolt Kit - 15mm With Black Conical Seat Bolts - Includes everything you need to install spacers on two wheels - ECS - Audi Volkswagen

Includes everything you need to install spacers on two wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that require conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748194
Mfg#:
ECS10157KTWBC1
Back Ordered
Auto Notify
ON SALE! SAVE 11%
$161.99

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

$144.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Rear Differential Mount - Audi B5 A4/S4

ES#2730494 - 003248ECS01A - Performance Rear Differential Mount - Audi B5 A4/S4 - Increase drivetrain rigidity and response! - ECS - Audi

Increase drivetrain rigidity and response! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2730494
Mfg#:
003248ECS01A
In Stock
ON SALE! SAVE 30%
$238.99

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

$167.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Performance Engine Mount Kit - B6/B7 S4/RS4

ES#2708157 - 000805ECS02AKT - ECS Performance Engine Mount Kit - B6/B7 S4/RS4 - Performance engine mounts to increase drivetrain rigidity - ECS - Audi

Performance engine mounts to increase drivetrain rigidity affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2708157
Mfg#:
000805ECS02AKT
In Stock
ON SALE! SAVE 10%
$409.99

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

$368.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#2848044 - CTS-EXH-CB-0015 - Cat-Back Exhaust System - 2.5" stainless steel with quad 3" polished stainless tips - CTS - Audi

2.5" stainless steel with quad 3" polished stainless tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
2848044
Mfg#:
CTS-EXH-CB-0015
Ships in 7 Business Days
$1399.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Short Throw Shifter - Audi B6/B7 A4/S4

ES#3023144 - 009198ECS01 - Adjustable Short Throw Shifter - Audi B6/B7 A4/S4 - Find your perfect setting with 3 steps of throw reduction - ECS - Audi

Find your perfect setting with 3 steps of throw reduction affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3023144
Mfg#:
009198ECS01
In Stock
ON SALE!
$385.99

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

$366.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi Thrust Arm Monoball Upgrade Kit - Front Lower, Inner

ES#4389692 - 006418la01KT - Audi Thrust Arm Monoball Upgrade Kit - Front Lower, Inner - Eliminate deflection caused by stock rubber bushings! - ECS - Audi

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!

Brand:
ECS - Corporate Logo
ES#:
4389692
Mfg#:
006418LA01KT
In Stock
ON SALE! SAVE 15%
$429.99

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

$365.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front BlueStuff Performance Brake Pads

ES#4031310 - DP52277NDX - Front BlueStuff Performance Brake Pads - Race inspired performance, NDX formula provides a great initial bite - EBC - Audi

Race inspired performance, NDX formula provides a great initial bite affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
EBC - Corporate Logo
ES#:
4031310
Mfg#:
DP52277NDX
In Stock
$237.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Metal Extended Slave Cylinder Kit

ES#4508665 - 8k0721257eKT - Adjustable Metal Extended Slave Cylinder Kit - Improve clutch pedal feel and the push clutch to start issue all at once! - Assembled By ECS - Audi

Improve clutch pedal feel and the push clutch to start issue all at once! 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#:
4508665
Mfg#:
8K0721257EKT
In Stock
$327.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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