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Audi S4 Performance Suspension Parts & Upgrades

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Density Line Front Upper Strut Mount - Priced Each

ES#2876924 - 034-601-1002-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#:
2876924
Mfg#:
034-601-1002-TD
In Stock
$45.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Street Performance Coilover System

ES#3221084 - 50356-2 - Street Performance Coilover System - Finally, A performance coilover suspension system for your B9 Audi - Offering unrivaled comfort and performance! - H&R - Audi

Finally, A performance coilover suspension system for your B9 Audi - Offering unrivaled comfort and performance! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! For vehicles with production date from 7/12/2016 with 48.5mm front strut body
For vehicles without Sport Suspension or Magnetic Ride Control

Brand:
H&R - Corporate Logo
ES#:
3221084
Mfg#:
50356-2
Ships in 3 Business Days
$1599.99

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

$1525.99 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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Megan Racing - Corporate Logo
ES#:
3183689
Mfg#:
MRS-AU-1991
Ships on Jun 29, 2026
Auto Notify
$168.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Spherical Front Upper Strut Mount - Pair

ES#4304843 - B8011A0 - Spherical Front Upper Strut Mount - Pair - Upgrade your shock mounts - JXB Performance - Audi

Upgrade your shock mounts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JXB Performance - Corporate Logo
ES#:
4304843
Mfg#:
B8011A0
Ships in 1 Business Day
$299.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport Upper Control Arm Kit

ES#4830726 - CTS-SUS-3005 - Sport Upper Control Arm Kit - Combine this with our lower control arm kit for a complete rejuvenation of your front suspension components - CTS - Audi

Combine this with our lower control arm kit for a complete rejuvenation of your front suspension components affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
4830726
Mfg#:
CTS-SUS-3005
Ships in 7 Business Days
$249.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Rear Sway Bar End Links

ES#3468833 - 034-402-4024 - Adjustable Rear Sway Bar End Links - Adjust preload on the sway bar, as well as alleviate any sway bar clearance issues caused by lowering your car - 034Motorsport - Audi

Adjust preload on the sway bar, as well as alleviate any sway bar clearance issues caused by lowering your car affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3468833
Mfg#:
034-402-4024
In Stock
$288.00 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3678259
Mfg#:
034-404-Z001
Ships on Jun 29, 2026
Auto Notify
$16.00 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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

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

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

Adjustable Damping Performance Coilover System - Audi B6/B7 A4/S4 & Alzor 19" Style 628 Wheels - Set Of Four

ES#4765928 - 027966ECS01KT - Adjustable Damping Performance Coilover System - Audi B6/B7 A4/S4 & Alzor 19" Style 628 Wheels - Set Of Four - Take control of your ride while going low with our sport-tuned coilover system and a set of wheels! - Enthusiast Bundles - Audi

Take control of your ride while going low with our sport-tuned coilover system and a set of wheels! 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#:
4765928
Mfg#:
027966ECS01KT
In Stock
ON SALE! SAVE 37%
$2236.99

This product was last offered at the strikethrough price on
01-18-2026

$1399.00 USD
This product is lifetime replacement eligible Lifetime Replacement

B9 A4/A5/S4/S5 Quattro Adjustable Damping Coilovers & Billet Aluminum Front Strut Brace and Thrust Arm Monoball Upgrade Kit

ES#4751642 - 000745LA01EBKT - B9 A4/A5/S4/S5 Quattro Adjustable Damping Coilovers & Billet Aluminum Front Strut Brace and Thrust Arm Monoball Upgrade Kit - Features 32 way adjustable damping, variable length and zinc-coated shock bodies and provides additional support to the strut towers for flex reduction to enhance your driving experience while eliminate deflection caused by stock rubber bushings! - Enthusiast Bundles - Audi

Features 32 way adjustable damping, variable length and zinc-coated shock bodies and provides additional support to the strut towers for flex reduction to enhance your driving experience while eliminate deflection caused by stock rubber bushings! 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
For the curved control arm

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751642
Mfg#:
000745LA01EBKT
In Stock
ON SALE! SAVE 29%
$1968.97

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

$1399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ST XA Coilover Kit - Adjustable Dampening

ES#4389623 - 182100BM - ST XA Coilover Kit - Adjustable Dampening - ST XTA coilovers offer high performance handling with adjustable rebound dampening. - Suspension Techniques - Audi

ST XTA coilovers offer high performance handling with adjustable rebound dampening. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with build date from 7/11/16, w/ 48.5mm front strut body

Brand:
Suspension Techniques - Corporate Logo
ES#:
4389623
Mfg#:
182100BM
Ships in 4 Business Days
$1399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ST XA Performance Coilover System - Adjustable Damping

ES#4056710 - 18210032 - ST XA Performance Coilover System - Adjustable Damping - Developed alongside KW Automotive, the ST XA allows individual adjustment of the damping to suit just about all your driving needs! - Suspension Techniques - Audi

Developed alongside KW Automotive, the ST XA allows individual adjustment of the damping to suit just about all your driving needs! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Height adjustable from 1.6" to 2.8" Front & Rear

Brand:
Suspension Techniques - Corporate Logo
ES#:
4056710
Mfg#:
18210032
Special Order: No Guaranteed ETA
$1399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ST XA Coilover Kit - Adjustable Dampening

ST XTA coilovers offer high performance handling with adjustable rebound dampening. 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

Brand:
Suspension Techniques - Corporate Logo
ES#:
4389619
Mfg#:
182100BH
Back Ordered
$1399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DS Series Coilover Suspension Kit

ES#3521687 - S-02-DS - DS Series Coilover Suspension Kit - Featuring 30 levels of adjustment and increased damping force at low speed piston velocities - BC Racing - Audi

Featuring 30 levels of adjustment and increased damping force at low speed piston velocities affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits both sedan and avant models

Brand:
BC Racing - Corporate Logo
ES#:
3521687
Mfg#:
S-02-DS
Back Ordered
$1395.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Performance Air Ride Kit

ES#3974224 - 78570 - Front Performance Air Ride Kit - Allow your B9 Audi to sit on the ground! - Air Lift - Audi

Allow your B9 Audi to sit on the ground! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with 53mm front lower mounts

Brand:
Air Lift - Corporate Logo
ES#:
3974224
Mfg#:
78570
In Stock at Vendor
$1386.99 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

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

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