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Audi S4 Performance Suspension Parts & Upgrades

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BR Series Coilover Suspension Kit - B9 Audi A4/S4

ES#4424819 - S-27-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 without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
4424819
Mfg#:
S-27-BR
Back Ordered
$1195.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Lower Straight Control Arm - Pair

ES#3090508 - MRSAU1912MEG - Front Lower Straight Control Arm - Pair - Upgraded lower straight control arm pair - Megan Racing - Audi

Upgraded lower straight control arm pair Fits models from production date 11/3/2009 (M14 Ball Joints)

Brand:
Megan Racing - Corporate Logo
ES#:
3090508
Mfg#:
MRSAU1912MEG
Back Ordered
Auto Notify
$238.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Dynamic+ Coil Spring Sleeves - Pair

ES#3678259 - 034-404-Z001 - Dynamic+ Coil Spring Sleeves - Pair - These coil spring sleeves are from high-durometer rubber to withstand up to 2,000 pounds of load. - 034Motorsport - Audi Volkswagen

These coil spring sleeves are from high-durometer rubber to withstand up to 2,000 pounds of load.

Brand:
034Motorsport - Corporate Logo
ES#:
3678259
Mfg#:
034-404-Z001
In Stock
$16.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Sway Bar - 25.4mm

ES#3183689 - MRS-AU-1991 - Rear Sway Bar - 25.4mm - Reduce body roll and increase handling! - Megan Racing - Audi

Reduce body roll and increase handling!

Brand:
Megan Racing - Corporate Logo
ES#:
3183689
Mfg#:
MRS-AU-1991
Ships on Oct 27, 2026
Auto Notify
$168.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Camber Correcting Density Line Control Arm Kit - Front

Includes lower control arms, upper adjustable control arms, M12 ball joints and all necessary hardware. For vehicles with M12 ball joints

Brand:
034Motorsport - Corporate Logo
ES#:
4159576
Mfg#:
034-401-1055
Ships in 3 Business Days
$1306.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Special Active Shock Absorber - Priced Each

ES#3560585 - 80451246 - Rear Special Active Shock Absorber - Priced Each - Superior handling without compromising ride quality - Koni - Audi

Superior handling without compromising ride quality

Brand:
Koni - Corporate Logo
ES#:
3560585
Mfg#:
80451246
In Stock
ON SALE! SAVE 20%
$146.99

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

$117.04 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Lower Radius Arm To Chassis Bushing - Street

ES#4046169 - PFF3-702 - Front Lower Radius Arm To Chassis Bushing - Street - Audi A4 / A5 / S5 / Q5 / SQ5 / RS4 Front Lower Radius Arm To Chassis Bushing - Street - Powerflex - Audi

Audi A4 / A5 / S5 / Q5 / SQ5 / RS4 Front Lower Radius Arm To Chassis Bushing - Street

Brand:
Powerflex - Corporate Logo
ES#:
4046169
Mfg#:
PFF3-702
Ships in 2 Business Days
$145.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Track Spec Density Line Control Arm Kit - Front

ES#4159608 - 034-401-1056 - Track Spec Density Line Control Arm Kit - Front - Includes lower control arms, upper adjustable control arms, M14 ball joints and all necessary hardware. - 034Motorsport - Audi

Includes lower control arms, upper adjustable control arms, M14 ball joints and all necessary hardware. For vehicles with M14 ball joints

Brand:
034Motorsport - Corporate Logo
ES#:
4159608
Mfg#:
034-401-1056
Back Ordered
$1285.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Track Spec Density Line Control Arm Kit - Front

Includes lower control arms, upper adjustable control arms, M12 ball joints and all necessary hardware. For vehicles with M12 ball joints

Brand:
034Motorsport - Corporate Logo
ES#:
4159610
Mfg#:
034-401-1057
Back Ordered
$1284.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Sway Bar End Link - Priced Each

ES#2561116 - 8K0411317D - Front Sway Bar End Link - Priced Each - Fits the left and right side - Lemforder - Audi

Fits the left and right side We Price Match - Give Us A Call or Chat!

Brand:
Lemforder - Corporate Logo
ES#:
2561116
Mfg#:
8K0411317D
In Stock
$22.43

This product was last offered at the strikethrough price on
05-26-2026

$18.18 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Rear Sway Bar End Links - Pair

ES#2864590 - 034-402-4005 - Adjustable Rear 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

Brand:
034Motorsport - Corporate Logo
ES#:
2864590
Mfg#:
034-402-4005
Back Ordered
$248.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Air Lift Performance Coilover Kit

ES#4908433 - 79005 - Air Lift Performance Coilover Kit - Offers the ability to convert to a complete air suspension system via a coilover-to-air conversion kit (coming soon)! - Air Lift - Audi

Offers the ability to convert to a complete air suspension system via a coilover-to-air conversion kit (coming soon)!

Brand:
Air Lift - Corporate Logo
ES#:
4908433
Mfg#:
79005
Ships in 5 Business Days
$1095.00 USD

ST X Performance Coilover System - Fixed Damping

ES#4056522 - 13210032 - ST X Performance Coilover System - Fixed Damping - Set your vehicle low and tight for optimal performance. - Suspension Techniques - Audi

Set your vehicle low and tight for optimal performance. Height adjustable from 1.6" to 2.8" Front & Rear

Brand:
Suspension Techniques - Corporate Logo
ES#:
4056522
Mfg#:
13210032
Back Ordered
$1089.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo Rear Subframe Insert Set

ES#5435532 - HW-561 - CTS Turbo Rear Subframe Insert Set - Lock down your B9 Audi's chassis and eliminate rear subframe flex with CTS Turbos billet aluminum insert set, delivering sharper handling and instant power transfer with minimal NVH. - CTS - Audi

Lock down your B9 Audi's chassis and eliminate rear subframe flex with CTS Turbo’s billet aluminum insert set, delivering sharper handling and instant power transfer with minimal NVH.

Brand:
CTS - Corporate Logo
ES#:
5435532
Mfg#:
HW-561
Back Ordered
$149.99 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 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
07-05-2026

$521.88 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

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Manufacturer names and/or part numbers are used only for identification purposes.

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