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Audi S4 Performance Suspension Parts & Upgrades

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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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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

Billet Aluminum Front Strut Brace - Audi B9 A4/A5/S4/S5/RS5

ES#3188267 - 019218ECS01 - Billet Aluminum Front Strut Brace - Audi B9 A4/A5/S4/S5/RS5 - 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3188267
Mfg#:
019218ECS01
In Stock
ON SALE! SAVE 32%
$383.99

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

$259.77 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

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

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

Audi B8/B8.5 A4 And S4 Front And Rear Adjustable Sway Bar Kit

ES#4213431 - 022846ecs01kt2 - Audi B8/B8.5 A4 And S4 Front And Rear Adjustable Sway Bar Kit - Reduce body roll and increase cornering speed - ECS - Audi

Reduce body roll and increase cornering speed affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4213431
Mfg#:
022846ECS01KT2
In Stock
ON SALE! SAVE 10%
$718.99

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

$647.04 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

Solid Rear Sway Bar - 25.4mm

ES#2864584 - 034-402-1001 - Solid Rear Sway Bar - 25.4mm - Substantially reduce understeer and body roll - 034Motorsport - Audi

Substantially reduce understeer and body roll affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Billet Aluminum Rear Subframe Reinforcement kit is recommended

Brand:
034Motorsport - Corporate Logo
ES#:
2864584
Mfg#:
034-402-1001
In Stock
$361.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet X-Brace - Red - Audi B8

ES#4220371 - 004802LA01AKT4 - Billet X-Brace - Red - Audi B8 - Improve steering feel and handling! - ECS - Audi

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

Fits Pre-Facelift models up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
4220371
Mfg#:
004802LA01AKT4
Ships on Aug 17, 2026
Auto Notify
ON SALE! SAVE 25%
$473.99

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

$355.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Damping Performance Coilover System - Audi B8/B8.5 & Thrust Arm Monoball Upgrade (M14 Ball Joints)

ES#4751074 - 025412ECS01EB2KT - Adjustable Damping Performance Coilover System - Audi B8/B8.5 & Thrust Arm Monoball Upgrade (M14 Ball Joints) - Take control of your ride while going low with our sport-tuned coilover system! - Enthusiast Bundles - Audi

Take control of your ride while going low with our sport-tuned coilover system! 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#:
4751074
Mfg#:
025412ECS01EB2KT
In Stock
ON SALE! SAVE 29%
$1887.31

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

$1349.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Front Strut Brace

ES#3199709 - 034-603-0012 - Billet Aluminum Front Strut Brace - Bolt-on upgrade for factory strut brace - Engineered to enhance handling dynamics and performance! - 034Motorsport - Audi

Bolt-on upgrade for factory strut brace - Engineered to enhance handling dynamics and performance! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3199709
Mfg#:
034-603-0012
In Stock
$515.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Rear Subframe Mount Insert Kit

ES#3247809 - 034-601-0046 - Billet Aluminum Rear Subframe Mount Insert Kit - Maintain proper suspension geometry when cornering and reduce rear subframe movement - 034Motorsport - Audi

Maintain proper suspension geometry when cornering and reduce rear subframe movement affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3247809
Mfg#:
034-601-0046
In Stock
$208.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Front Upper Control Arm Kit

ES#4164442 - 81383 - Adjustable Front Upper Control Arm Kit - Adjust front camber and caster 1.5 on the Audi B9 platform with these forged aluminum adjustable control arms from SPC! - SPC - Audi

Adjust front camber and caster ±1.5° on the Audi B9 platform with these forged aluminum adjustable control arms from SPC! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SPC - Corporate Logo
ES#:
4164442
Mfg#:
81383
In Stock at Vendor
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 A4 and S4 Front Adjustable Sway Bar Kit

ES#4026793 - 022846ecs01KT - Audi B8/B8.5 A4 and S4 Front Adjustable Sway Bar Kit - Complete with ECS Tuning Adjustable End Links! - ECS - Audi

Complete with ECS Tuning Adjustable End Links! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4026793
Mfg#:
022846ECS01KT
In Stock
ON SALE!
$407.99

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

$387.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Control Arm Kit Upper Adjustable - Track Spec

ES#4630174 - 034-401-1070 - Density Line Control Arm Kit Upper Adjustable - Track Spec - Gain additional negative camber for increased cornering grip and improved handling performance. - 034Motorsport - Audi

Gain additional negative camber for increased cornering grip and improved handling performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4630174
Mfg#:
034-401-1070
Back Ordered
$1226.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Suspension Parts & Upgrades

Your car's performance and ride quality are effectively determined by your suspension. Find all the replacement and upgrade solutions for your dampers, springs, control arms, and more in our suspension catalog.

Let us help you find the parts that fit your Audi

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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