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Audi S4 Performance Suspension Parts & Upgrades

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ES#4698705 - 82451407KT - Special Active Front And Rear Struts With H&R Sport Springs - Average lowering of .80"- 1.6" front and rear - Assembled By ECS - Audi

Average lowering of .80"- 1.6" front and rear affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Vehicle will lose Adaptive Dampening Control

Brand:
Assembled By ECS - Corporate Logo
ES#:
4698705
Mfg#:
82451407KT
Back Ordered
$1021.99

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

$1019.99 USD
This product is lifetime replacement eligible Partial Replacement
ES#5375563 - S-28-ER - ER Series Coilover Suspension Kit - B9 Audi A4/S4 - Get the high quality, unique features of the BC Racing "BR" and "RM" series with the added benefit of an external reservoir for superior performance! - BC Racing - Audi

Get the high quality, unique features of the BC Racing "BR" and "RM" series with the added benefit of an external reservoir for superior performance! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 7/12/2016 with 48.5mm front strut body without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
5375563
Mfg#:
S-28-ER
Back Ordered
$2255.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4424822 - S-28-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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 7/12/2016 with 48.5mm front strut body without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
4424822
Mfg#:
S-28-BR
Back Ordered
$1195.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5375567 - S-27-DS - DS Series Coilover Suspension Kit - B9 Audi A4/S4 - BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. - BC Racing - Audi

BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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#:
5375567
Mfg#:
S-27-DS
Back Ordered
$1395.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5375516 - S-35-DS - DS Series Coilover Suspension Kit - B9 Audi A4/S4 - BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. - BC Racing - Audi

BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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#:
5375516
Mfg#:
S-35-DS
Back Ordered
$1395.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5375566 - S-27-ER - ER Series Coilover Suspension Kit - B9 Audi A4/S4 - Get the high quality, unique features of the BC Racing "BR" and "RM" series with the added benefit of an external reservoir for superior performance! - BC Racing - Audi

Get the high quality, unique features of the BC Racing "BR" and "RM" series with the added benefit of an external reservoir for superior performance! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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#:
5375566
Mfg#:
S-27-ER
Back Ordered
$2255.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5375564 - S-28-DS - DS Series Coilover Suspension Kit - B9 Audi A4/S4 - BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. - BC Racing - Audi

BC Racing took the best features from their BR Series Coilover, engineered components to improve driver experience, and are proud to present the BC Racing DS series with digressive piston damping that dramatically improves suspension feel and feedback. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 7/12/2016 with 48.5mm front strut body without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
5375564
Mfg#:
S-28-DS
Back Ordered
$1395.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2983798 - 46-183316 - Bilstein B12 Pro-Kit Suspension System - Expertly matched performance Eibach Pro-line lowering springs and Bilstein shock/strut package for a dramatic increase in performance handling. World-famous Bilstein quality with a limited lifetime warranty! - Bilstein - Audi

Expertly matched performance Eibach Pro-line lowering springs and Bilstein shock/strut package for a dramatic increase in performance handling. World-famous Bilstein quality with a limited lifetime warranty! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our Spin To Win Sweepstakes!
For avant models only.

Brand:
Bilstein - Corporate Logo
ES#:
2983798
Mfg#:
46-183316
Back Ordered
$939.00 USD
Free Shipping
ES#2951326 - 35210765kt - KW Clubsport Kit - 2 Way Adjustable Dampening - Height adjustable from 0.4" to 1.5" (front) and 0.4" to 1.5" (rear) - KW Suspension - Audi

Height adjustable from 0.4" to 1.5" (front) and 0.4" to 1.5" (rear) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Cabriolet models only

Brand:
KW Suspension - Corporate Logo
ES#:
2951326
Mfg#:
35210765KT
Back Ordered
$3894.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2619630 - 15210099 - V2 Series Coilover Kit - With EDC Deactivation Kit - Variant 2 coilovers offer sport handling with adjustable rebound dampening - KW Suspension - Audi

Variant 2 coilovers offer sport handling with adjustable rebound dampening affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits avant models with factory EDC. Range of lowering is 0.8-1.5" in the front and 0.4-1.5" in the rear.

Brand:
KW Suspension - Corporate Logo
ES#:
2619630
Mfg#:
15210099
Back Ordered
$3024.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2951321 - 35210735kt - KW Clubsport Kit - 2 Way Adjustable Dampening - Height adjustable from 0.4" to 1.5" (front) and 0.4" to 1.5" (rear) - KW Suspension - Audi

Height adjustable from 0.4" to 1.5" (front) and 0.4" to 1.5" (rear) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Sedan & Avant models only

Brand:
KW Suspension - Corporate Logo
ES#:
2951321
Mfg#:
35210735KT
Back Ordered
$3894.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3427394 - 18010097KT - KW Street Comfort Coilover Kit - Street Comfort coilovers offer sport handling with adjustable ride height - KW Suspension - Audi

Street Comfort coilovers offer sport handling with adjustable ride height affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with factory electronic damping control.

Brand:
KW Suspension - Corporate Logo
ES#:
3427394
Mfg#:
18010097KT
Back Ordered
$2814.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4698691 - 82411317SPORT - Front Sport Strut - Priced Each  - Tighten up your Audi with these Koni struts - Koni - Audi

Tighten up your Audi with these Koni struts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles without electronic suspension (49mm diameter strut)

Brand:
Koni - Corporate Logo
ES#:
4698691
Mfg#:
82411317SPORT
Back Ordered
ON SALE! SAVE 20%
$259.99

This product was last offered at the strikethrough price on
03-02-2026

$207.98 USD
Free Shipping
on orders $49 and up
ES#4698699 - 82411317sportKT - Sport Shocks & Struts Set - Tighten up your Audi with these Koni struts - Koni - Audi

Tighten up your Audi with these Koni struts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vehicle will lose Adaptive Dampening Control

Brand:
Koni - Corporate Logo
ES#:
4698699
Mfg#:
82411317SPORTKT
Back Ordered
ON SALE! SAVE 20%
$900.99

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

$719.57 USD
Free Shipping
on orders $49 and up
ES#4045208 - 273100BJ - ST Adjustable Lowering Springs - Allows individual ride height adjustment at each corner of your vehicle - Make your stock suspension height adjustable, without compromise! - Suspension Techniques - Audi

Allows individual ride height adjustment at each corner of your vehicle - Make your stock suspension height adjustable, without compromise! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For sedan models with factory Electronic Damping Control - Average lowering 0.0"-1.0" F and 0.0" to 0.8" R

Brand:
Suspension Techniques - Corporate Logo
ES#:
4045208
Mfg#:
273100BJ
Back Ordered
$1089.00 USD
Free Shipping
ES#4045199 - 273100BM - ST Adjustable Lowering Springs - Allows individual ride height adjustment at each corner of your vehicle - Make your stock suspension height adjustable, without compromise! - Suspension Techniques - Audi

Allows individual ride height adjustment at each corner of your vehicle - Make your stock suspension height adjustable, without compromise! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For sedan models without factory Electronic Damping Control - For models with 48.5mm diameter front strut body (Average lowering 0.0"-1.0" F and 0.0" to 0.8" R

Brand:
Suspension Techniques - Corporate Logo
ES#:
4045199
Mfg#:
273100BM
Back Ordered
$1089.00 USD
Free Shipping

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

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