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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Suspension Parts & Accessories

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KW V3 Series Coilover Kit

ES#4056866 - 352100BH - KW V3 Series Coilover Kit - The ultimate in coilover technology, featuring double adjustable damping - KW Suspension - Audi

The ultimate in coilover technology, featuring double adjustable damping For sedan models without Electronic Damping Control and a 50mm front strut body. Range of lowering is 0.4-1.4" front and rear.

Brand:
KW Suspension - Corporate Logo
ES#:
4056866
Mfg#:
352100BH
Back Ordered
$3524.00 USD
Free Shipping

Front & Rear Suspension Installation Kit

ES#3691724 - 8w0412377KT1 - Front & Rear Suspension Installation Kit - Includes front & rear shock/strut mounts and associated hardware for a complete suspension installation - Genuine Volkswagen Audi - Audi

Includes front & rear shock/strut mounts and associated hardware for a complete suspension installation For models with standard & sport suspension (PR-Codes 1BA, 1BE)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3691724
Mfg#:
8W0412377KT1
Ships in 2 Business Days
$662.99

This product was last offered at the strikethrough price on
07-04-2026

$658.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Suspension Control Arm Refresh Kit

A complete Kit to give you everything you need to replace a your rear control arms!

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4803796
Mfg#:
8W0505311HKT
Ships in 8 Business Days
$3243.99

This product was last offered at the strikethrough price on
07-05-2026

$3239.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial 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. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4630174
Mfg#:
034-401-1070
Ships in 2 Business Days
ON SALE! SAVE 15%
$1226.00

This product was last offered at the strikethrough price on
08-17-2026

$1040.54 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Upper Control Arm Kit - Camber Correcting

ES#3546573 - 034-401-1061 - Density Line Upper Control Arm Kit - Camber Correcting - Adds positive camber to achieve factory alignment specs after lowering, and reduce tire wear! - 034Motorsport - Audi

Adds positive camber to achieve factory alignment specs after lowering, and reduce tire wear! 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3546573
Mfg#:
034-401-1061
Ships in 2 Business Days
ON SALE! SAVE 15%
$663.00

This product was last offered at the strikethrough price on
08-17-2026

$561.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B9 A4/A5/S4/S5 Quattro Adjustable Damping Coilovers & Front/Rear Sway Bars

ES#4876154 - 000745LAEBKT2 - B9 A4/A5/S4/S5 Quattro Adjustable Damping Coilovers & Front/Rear Sway Bars - Enhance your B9 with a performance-tuned coilover suspension setup & upgraded sway bars! - Enthusiast Bundles - Audi

Enhance your B9 with a performance-tuned coilover suspension setup & upgraded sway bars! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4876154
Mfg#:
000745LAEBKT2
Ships on Jan 4, 2027
Auto Notify
ON SALE! SAVE 25%
$1863.98

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

$1399.00 USD
This product is lifetime replacement eligible Lifetime Replacement

B8 Performance Plus Front Strut - Priced Each

ES#4390623 - 24-274876 - B8 Performance Plus Front Strut - Priced Each - Compliments factory sport package or lowering springs with a remarkably comfortable sport ride. World-famous Bilstein quality with a limited lifetime warranty! - Bilstein - Audi

Compliments factory sport package or lowering springs with a remarkably comfortable sport ride. World-famous Bilstein quality with a limited lifetime warranty! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bilstein - Corporate Logo
ES#:
4390623
Mfg#:
24-274876
Ships on Dec 24, 2026
33% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$370.00

This product was last offered at the strikethrough price on
08-23-2026

$249.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BR Series Coilover Suspension Kit - Extreme Low

ES#4424821 - S-27E-BR - BR Series Coilover Suspension Kit - Extreme Low - Featuring 30 levels of adjustment and performance spring rates and valving - BC Racing - Audi

Featuring 30 levels of adjustment and performance spring rates and valving For vehicles with production date up to 7/11/2016 with 53mm front strut body without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
4424821
Mfg#:
S-27E-BR
Ships on Oct 13, 2026
$1345.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Lowering Springs

ES#4830683 - CTS-LS-025 - Lowering Springs - 1 lowering on average for front and Rear - CTS - Audi

1″ lowering on average for front and Rear

Brand:
CTS - Corporate Logo
ES#:
4830683
Mfg#:
CTS-LS-025
Ships in 7 Business Days
$249.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Bilstein B16 PSS10 Suspension System

ES#4370310 - 48-275071 - 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! 10X Entries Into Our F80 M3 Sweepstakes
Without Electronic Suspension

Brand:
Bilstein - Corporate Logo
ES#:
4370310
Mfg#:
48-275071
Ships in 3 Business Days
31% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$3573.00

This product was last offered at the strikethrough price on
08-23-2026

$2473.00 USD
Free Shipping

BR Series Coilover Suspension Kit - B9 Audi A4/S4

ES#4872510 - S-35-BR - BR Series Coilover Suspension Kit - B9 Audi A4/S4 - Featuring 30 levels of adjustment and performance spring rates and valving that makes the BR Series perfect for both daily drivers and track warriors! - BC Racing - Audi

Featuring 30 levels of adjustment and performance spring rates and valving that makes the BR Series perfect for both daily drivers and track warriors! For vehicles with production date up to 7/11/2016 with 53mm front strut body with factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
4872510
Mfg#:
S-35-BR
Ships on Oct 13, 2026
$1195.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

X-Clear Driveshaft Tunnel Brace

ES#4381928 - 034-603-0029 - X-Clear Driveshaft Tunnel Brace - Allows for a larger diameter exhaust to be installed without causing excessive rattling or vibration. - 034Motorsport - Audi

Allows for a larger diameter exhaust to be installed without causing excessive rattling or vibration. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4381928
Mfg#:
034-603-0029
In Stock
ON SALE! SAVE 14%
$151.00

This product was last offered at the strikethrough price on
08-17-2026

$129.11 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 Billet Tunnel Brace - Black

ES#3476922 - 023781ECS01-01 - Audi B9 Billet Tunnel Brace - Black - Replace your small and weak stamped brace with heavy-duty billet aluminum! - ECS - Audi

Replace your small and weak stamped brace with heavy-duty billet aluminum! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3476922
Mfg#:
023781ECS01-01
In Stock
ON SALE! SAVE 20%
$168.99

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

$135.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B4 OE Replacement Rear Shock - Priced Each

ES#4390628 - 24-279697 - B4 OE Replacement Rear Shock - Priced Each - Engineered to be the best choice for maintaining the original ride quality of your vehicle, while meeting or exceeding OE standards. - Bilstein - Audi

Engineered to be the best choice for maintaining the original ride quality of your vehicle, while meeting or exceeding OE standards. 10X Entries Into Our F80 M3 Sweepstakes

For vehicles with sport suspension and without electronic suspension

Brand:
Bilstein - Corporate Logo
ES#:
4390628
Mfg#:
24-279697
In Stock
$109.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coil Spring - Priced each

ES#3087109 - 8W0511115EP - Coil Spring - Priced each - Restore your factory ride quality - Genuine Volkswagen Audi - Audi

Restore your factory ride quality

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3087109
Mfg#:
8W0511115EP
Ships in 1 day
8% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$330.00

This product was last offered at the strikethrough price on
08-23-2026

$301.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Strut - Priced Each

ES#4022517 - 8W0413029N - Front Strut - Priced Each - For vehicles with EDC - Genuine Volkswagen Audi - Audi

For vehicles with EDC

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4022517
Mfg#:
8W0413029N
Ships in 2 Business Days
5% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1079.99

This product was last offered at the strikethrough price on
08-23-2026

$1025.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Suspension Parts & Accessories

A good suspension holds you up, while keeping your tires safely planted on the road surface for good traction, braking, and handling. Even if you don't know jounce from rebound, we can help you choose suspension parts, accessories, and upgrades to match your car, driving style, and budget.

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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