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Audi S4 Performance Parts & Upgrades

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Carbon Fiber RS4 Y-Pipe

ES#2972858 - 034-108-5000 - Carbon Fiber RS4 Y-Pipe - Features high-quality carbon fiber with perfect fitment and optimal flow - 034Motorsport - Audi

Features high-quality carbon fiber with perfect fitment and optimal flow affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2972858
Mfg#:
034-108-5000
Ships in 2 Business Days
$647.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Dynamic+ StreetSport Front Brake Pad Set

ES#4845282 - 034-302-0026 - 034Motorsport Dynamic+ StreetSport Front Brake Pad Set - Semi-metallic pads that offer low dust and noise for comfortable everyday use, while delivering high friction, superior modulation, and exceptional stopping power! - 034Motorsport - Audi

Semi-metallic pads that offer low dust and noise for comfortable everyday use, while delivering high friction, superior modulation, and exceptional stopping power! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4845282
Mfg#:
034-302-0026
In Stock
$387.00 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4315808
Mfg#:
008184LA01
In Stock
ON SALE! SAVE 10%
$138.36

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

$124.52 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Special Active Shock Absorber - Priced Each

ES#3560586 - 80451265 - Rear Special Active Shock Absorber - Priced Each - 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
Vehicles equipped with Electronic Damping Control (EDC) will lose factory shock damping and receive a system error code

Brand:
Koni - Corporate Logo
ES#:
3560586
Mfg#:
80451265
In Stock
ON SALE! SAVE 20%
$161.22

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

$128.62 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Rear Diffuser - Audi B8 A4/S4 Pre-facelift

ES#3200799 - 021532ECS01A - Carbon Fiber Rear Diffuser - Audi B8 A4/S4 Pre-facelift - 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!

Up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3200799
Mfg#:
021532ECS01A
In Stock
ON SALE! SAVE 30%
$999.99

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

$699.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Core IE Performance ECU Tune - Includes TCU Tune & POWERlink Cable

ES#3706797 - iesocgj1tcu - Core IE Performance ECU Tune - Includes TCU Tune & POWERlink Cable - Average gain of 104 horsepower and 85 lb-ft of torque on 91 Octane - Integrated Engineering - Audi

Average gain of 104 horsepower and 85 lb-ft of torque on 91 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
For vehicles with DSG transmission only

Brand:
Integrated Engineering - Corporate Logo
ES#:
3706797
Mfg#:
IESOCGJ1TCU
In Stock
$1098.99 USD
Free Shipping

Density Line Front Upper Strut Mount - Priced Each

ES#2966732 - 034-601-1003-TD - Density Line Front Upper Strut Mount - Priced Each - Approximately twice as stiff as stock, for increased firmness and vehicle control - 034Motorsport - Audi

Approximately twice as stiff as stock, for increased firmness and vehicle control affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2966732
Mfg#:
034-601-1003-TD
Back Ordered
Auto Notify
$46.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exact-Fit Stainless Steel Clutch Line

ES#3200644 - 017626ECS01 - Exact-Fit Stainless Steel Clutch Line - Improve clutch pedal feel with this simple, yet dramatic upgrade - ECS - Audi

Improve clutch pedal feel with this simple, yet dramatic upgrade affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3200644
Mfg#:
017626ECS01
In Stock
ON SALE! SAVE 20%
$87.99

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

$70.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Forged Carbon Fiber Rear Diffuser

ES#4490851 - 018359ECS01-02 - Audi B8.5 S4 / A4 S-Line Forged Carbon Fiber Rear Diffuser - Hand-laid chopped carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid chopped 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!

From the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
4490851
Mfg#:
018359ECS01-02
In Stock
ON SALE! SAVE 36%
$998.99

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

$637.04 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Luft-Technik Intake System - Carbon Fiber Inlet - Audi B8 S4/S5 3.0T

ES#2992535 - 007344ECS02 - Luft-Technik Intake System - Carbon Fiber Inlet - Audi B8 S4/S5 3.0T - Engineered for increased engine performance with show quality looks - ECS - Audi

Engineered for increased engine performance with show quality looks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2992535
Mfg#:
007344ECS02
In Stock
ON SALE! SAVE 10%
$560.99

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

$504.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Bilstein B16 PSS10 Suspension System

ES#3426731 - 48-262316 - Bilstein B16 PSS10 Suspension System - Height adjustable suspension system offering adjustable compression and rebound to dial in for competition, comfort, or anywhere in between. World-famous Bilstein quality with a limited lifetime warranty! - Bilstein - Audi

Height adjustable suspension system offering adjustable compression and rebound to dial in for competition, comfort, or anywhere in between. World-famous Bilstein quality with a limited lifetime warranty! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with build date up to 7/11/16, w/ 53mm front strut body diameter - Vehicles equipped with Electronic

Brand:
Bilstein - Corporate Logo
ES#:
3426731
Mfg#:
48-262316
Ships in 3 Business Days
$2499.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Tunnel Brace - Black - Audi B8/Porsche Macan

ES#3569140 - 023780ECS01-01 - Billet Tunnel Brace - Black - Audi B8/Porsche Macan - Replace your small and weak stamped brace with heavy-duty billet aluminum! - ECS - Audi Porsche

Replace your small and weak stamped brace with heavy-duty billet aluminum! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3569140
Mfg#:
023780ECS01-01
In Stock
ON SALE! SAVE 25%
$170.99

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

$128.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Ultimate Audi B8 Pre-Facelift Street Shield Kit

ES#3612454 - 003251ecs01aKT - ECS Tuning Ultimate Audi B8 Pre-Facelift Street Shield Kit - Get the ultimate under body protection for your B8! - ECS - Audi

Get the ultimate under body protection for your B8! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits B8 chassis up to the 2012 model year with manual and DSG transmissions only

Brand:
ECS - Corporate Logo
ES#:
3612454
Mfg#:
003251ECS01AKT
In Stock
ON SALE! SAVE 10%
$914.99

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

$823.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Front Lower Control Arm Kit

ES#3199971 - 034-401-1044 - Density Line Front Lower Control Arm Kit - Includes new lower control arms with Density Line control arm bushings, M12 ball joints, and hardware - 034Motorsport - Audi

Includes new lower control arms with Density Line control arm bushings, M12 ball joints, and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits models up to production date 11/2/2009 (M12 Ball Joints)

Brand:
034Motorsport - Corporate Logo
ES#:
3199971
Mfg#:
034-401-1044
Ships in 2 Business Days
$617.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 10mm With Ball Seat Bolts

ES#2603073 - 002411ECS02AKT2 - Wheel Spacer & Bolt Kit - 10mm With Ball Seat Bolts - Complete kit for two wheels, includes everything you need to install spacers - ECS - Audi

Complete kit for two wheels, includes everything you need to install spacers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits OE wheels, or wheels that use OE ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2603073
Mfg#:
002411ECS02AKT2
Back Ordered
Auto Notify
ON SALE!
$137.99

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

$130.81 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Street Density Line Transmission Mount

ES#2952012 - 034-509-4001sd - Street Density Line Transmission Mount - Increase performance and durability without sacrificing comfort - 034Motorsport - Audi

Increase performance and durability without sacrificing comfort affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Manual transmission only

Brand:
034Motorsport - Corporate Logo
ES#:
2952012
Mfg#:
034-509-4001SD
In Stock
$116.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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