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Audi S4 Performance Suspension Parts & Upgrades

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X-Brace Stretch Bolt Subframe Hardware

ES#4020195 - 034-603-Z005 - X-Brace Stretch Bolt Subframe Hardware - We recommend using these new factory stretch bolts to install the 034Motorsport Billet Aluminum X-Brace Chassis Reinforcement Upgrade. - 034Motorsport - Audi

We recommend using these new factory stretch bolts to install the 034Motorsport Billet Aluminum X-Brace Chassis Reinforcement Upgrade. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4020195
Mfg#:
034-603-Z005
In Stock
$42.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Front Sway Bar End Links - Pair

ES#2864591 - 034-402-4006 - Adjustable Front Sway Bar End Links - Pair - Replace your flimsy, sloppy OEM sway bar end links with these performance engineered adjustable spherical endlinks - 034Motorsport - Audi

Replace your flimsy, sloppy OEM sway bar end links with these performance engineered adjustable spherical endlinks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2864591
Mfg#:
034-402-4006
Ships in 2 Business Days
$217.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi Thrust Arm Monoball Upgrade - Pre-Installed in Meyle HD Arms (M12 Ball Joints)

ES#4429964 - 012596LA01 - Audi Thrust Arm Monoball Upgrade - Pre-Installed in Meyle HD Arms (M12 Ball Joints) - 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!

Up to production date 11/2/2009 (M12 Ball Joints)

Brand:
ECS - Corporate Logo
ES#:
4429964
Mfg#:
012596LA01
In Stock
ON SALE! SAVE 10%
$717.99

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

$646.11 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Lower Control Arm Brace - Audi B8 A4/A5/S4/S5

ES#3478040 - 008050ecs01KT - Rear Lower Control Arm Brace - Audi B8 A4/A5/S4/S5 - Provides additional support to the rear lower control arms for flex reduction to enhance your driving experience - ECS - Audi

Provides additional support to the rear lower control arms 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#:
3478040
Mfg#:
008050ECS01KT
Ships on Aug 11, 2026
Auto Notify
ON SALE! SAVE 30%
$183.99

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

$128.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8/B8.5 A4/S4 Lowering Springs & Installation Kit

ES#4691182 - 047330LA01KT - B8/B8.5 A4/S4 Lowering Springs & Installation Kit - Dramatically improve looks and handling with and average lowering up to 1.6" front and rear. Paired with ECS Tuning Cup Kit Installation Kit. - Assembled By ECS - Audi

Dramatically improve looks and handling with and average lowering up to 1.6" front and rear. Paired with ECS Tuning Cup Kit Installation Kit. 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#:
4691182
Mfg#:
047330LA01KT
Ships on Jul 1, 2026
Auto Notify
ON SALE!
$652.99

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

$637.31 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Upper Control Arm Bushing Set - Inner - Street

ES#2651917 - PFF3-203x4 - Front Upper Control Arm Bushing Set - Inner - Street - Improves handling and control - Upgrade to a more engaging driving experience - Powerflex - Audi Volkswagen

Improves handling and control - Upgrade to a more engaging driving experience affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
2651917
Mfg#:
PFF3-203X4
In Stock
$126.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sway Bar Set

ES#2816985 - 52316 - Sway Bar Set - Kit includes 28mm front & 24mm rear sway bars - Suspension Techniques - Audi

Kit includes 28mm front & 24mm rear sway bars affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Suspension Techniques - Corporate Logo
ES#:
2816985
Mfg#:
52316
Back Ordered
$629.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Spherical Adjustable Front Upper Control Arm Kit

ES#3183545 - 034-401-1006 - Spherical Adjustable Front Upper Control Arm Kit - Zero deflection and slop, uncompromized suspension geometry - Track Spec - 034Motorsport - Audi

Zero deflection and slop, uncompromized suspension geometry - Track Spec affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Small diameter, non-feminine racing springs are required, stock diameter springs will hit the links

Brand:
034Motorsport - Corporate Logo
ES#:
3183545
Mfg#:
034-401-1006
Back Ordered
$627.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Sport Shock Absorber - Priced Each

ES#2574594 - 80401283SPORT - Rear Sport Shock Absorber - Priced Each - Adjustable shocks designed to be used with aggressive lowering springs - Koni - Audi

Adjustable shocks designed to be used with aggressive lowering springs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Koni - Corporate Logo
ES#:
2574594
Mfg#:
80401283SPORT
In Stock at Vendor
ON SALE! SAVE 20%
$188.81

This product was last offered at the strikethrough price on
02-10-2026

$150.64 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Special Active Front And Rear Struts

ES#4698700 - 82451406KT - Special Active Front And Rear Struts - 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
Vehicle will lose Adaptive Dampening Control

Brand:
Koni - Corporate Logo
ES#:
4698700
Mfg#:
82451406KT
Back Ordered
ON SALE! SAVE 20%
$734.99

This product was last offered at the strikethrough price on
02-06-2026

$586.34 USD
Free Shipping
on orders $49 and up

Front Sway Bar (32mm)

If understeer is an issue, increasing or adding a sway bar in the front can help. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Megan Racing - Corporate Logo
ES#:
4833874
Mfg#:
MRS-AU-2090
Ships in 4 Business Days
$279.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Rear Toe Arms With Spherical Bearings

ES#4447729 - AK-275-A - Adjustable Rear Toe Arms With Spherical Bearings - Solid spherical bushings and adjustable lengths for perfectly dialed in camber settings. Adjustment range of +/-3.00 Degrees - GODSPEED - Audi

Solid spherical bushings and adjustable lengths for perfectly dialed in camber settings. Adjustment range of +/-3.00 Degrees affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
GODSPEED - Corporate Logo
ES#:
4447729
Mfg#:
AK-275-A
Ships on Jul 6, 2026
$180.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Lower Control Arm Kit

ES#3183691 - mrs-au-1911-1912 - Front Lower Control Arm Kit - Includes upgraded lower straight and curved control arms - Megan Racing - Audi

Includes upgraded lower straight and curved control arms affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Megan Racing - Corporate Logo
ES#:
3183691
Mfg#:
MRS-AU-1911-1912
Back Ordered
Auto Notify
$524.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Lower Control Arm Kit

ES#3183552 - 034-401-1021KT - Density Line Lower Control Arm Kit - Includes 034Motorsport Density line lower control arms & necessary hardware - Assembled By ECS - Audi

Includes 034Motorsport Density line lower control arms & necessary hardware 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#:
3183552
Mfg#:
034-401-1021KT
In Stock
$525.64

This product was last offered at the strikethrough price on
05-04-2026

$521.88 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Front Sway Bar Bushing Set - Race - 29mm

ES#2650211 - PFF3-204-29BX2 - Performance Front Sway Bar Bushing Set - Race - 29mm - Stiffer bushings allow sway bars to work at their fullest potential - Powerflex Black Series - Audi Volkswagen

Stiffer bushings allow sway bars to work at their fullest potential affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex Black Series - Corporate Logo
ES#:
2650211
Mfg#:
PFF3-204-29BX2
In Stock
$56.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B9 Stage 1 Suspension Package

Start off your suspension upgrades on the right foot with the EMD Auto stage 1 suspension package! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Emmanuele Design - Corporate Logo
ES#:
4430332
Mfg#:
EMD-B9Q-STG1
Ships in 1 Business Day
$510.00 USD
Free Shipping
on orders $49 and up
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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