Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle

No Vehicle selected
Please select your vehicle below.

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

Audi S4 Performance Suspension Parts & Upgrades

Sort By
Filter By
Return to Top

Front Lower Control Arm Set - With ECS Poly. Bushings

ES#3411547 - 019210ECS01-01 - Front Lower Control Arm Set - With ECS Poly. Bushings - Pre-installed ECS Poly Bushings help reduce suspension deflection and improve durability while easing install - Assembled By ECS - Audi Volkswagen

Pre-installed ECS Poly Bushings help reduce suspension deflection and improve durability while easing install affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
From VIN 8D-Y-080 001 - Split is in the 2000 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
3411547
Mfg#:
019210ECS01-01
Ships in 5 Business Days
ON SALE!
$399.99

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

$387.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Sway Bar - 24mm

ES#2808721 - 51316 - Rear Sway Bar - 24mm - Reduce body roll and increase traction! - Suspension Techniques - Audi

Reduce body roll and increase traction! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Suspension Techniques - Corporate Logo
ES#:
2808721
Mfg#:
51316
In Stock at Vendor
$369.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 A5/S5 RS5 Rear Adjustable Sway Bar

ES#4027362 - 022848ecs01KT - Audi B9 A4/S4 A5/S5 RS5 Rear Adjustable Sway Bar - Reduce body roll and enhance handling! - ECS - Audi

Reduce body roll and enhance handling! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4027362
Mfg#:
022848ECS01KT
Ships on Sep 2, 2026
Auto Notify
ON SALE!
$372.99

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

$354.21 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rod End Boot (14-18mm) - Priced Each

ES#3247881 - RERS3 - Rod End Boot (14-18mm) - Priced Each - Protect spherical bearings from dirt & moisture to prolong service life. - Turner Motorsport - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Protect spherical bearings from dirt & moisture to prolong service life. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
3247881
Mfg#:
RERS3
In Stock
$39.99

This product was last offered at the strikethrough price on
03-26-2026

$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Racingline Sport Spring Set

ES#3570412 - VWR3141S4 - Racingline Sport Spring Set - Give your B9 S4 the ride height it deserves - The first upgrade to make to your car! - Racingline - Audi

Give your B9 S4 the ride height it deserves - The first upgrade to make to your car! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Racingline - Corporate Logo
ES#:
3570412
Mfg#:
VWR3141S4
Ships in 2 Business Days
$338.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 A5/S5 RS5 Front Adjustable Sway Bar

ES#4027361 - 022847ecs01KT - Audi B9 A4/S4 A5/S5 RS5 Front Adjustable Sway Bar - Reduce body roll and enhance handling! - ECS - Audi

Reduce body roll and enhance handling! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4027361
Mfg#:
022847ECS01KT
Ships on Oct 15, 2026
ON SALE! SAVE 10%
$371.56

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

$334.40 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Special Active Front Strut - Priced Each

ES#4698695 - 82451406 - Special Active Front Strut - 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
For vehicles without electronic suspension (49mm diameter strut)

Brand:
Koni - Corporate Logo
ES#:
4698695
Mfg#:
82451406
Back Ordered
ON SALE! SAVE 20%
$207.99

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

$165.70 USD
Free Shipping
on orders $49 and up

Performance Rear Sway Bar End Links

ES#3183670 - MRS-AU-0130 - Performance Rear Sway Bar End Links - Replace the flimsy stock plastic and rubber units - Megan Racing - Audi

Replace the flimsy stock plastic and rubber units affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Megan Racing - Corporate Logo
ES#:
3183670
Mfg#:
MRS-AU-0130
Ships in 4 Business Days
$165.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Rear Spring Perch

ES#4304765 - B8010A0 - Billet Rear Spring Perch - Replace your spring perches with stronger more rigid billet aluminum! - JXB Performance - Audi

Replace your spring perches with stronger more rigid billet aluminum! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JXB Performance - Corporate Logo
ES#:
4304765
Mfg#:
B8010A0
Ships in 4 Business Days
$109.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE Lowering Springs

ES#5457158 - IESSCK2 - IE Lowering Springs - Performance without the punishment: get a connected, aggressive stance while maintaining the ride comfort of your factory dampers. - Integrated Engineering - Audi

Performance without the punishment: get a connected, aggressive stance while maintaining the ride comfort of your factory dampers. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
5457158
Mfg#:
IESSCK2
In Stock
$324.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Special Active Front Strut Kit

ES#4430367 - 824512642KT - Special Active Front Strut Kit - 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
Vehicles equipped with Electronic Damping Control (EDC) will lose factory shock damping and receive a system error code

Brand:
Koni - Corporate Logo
ES#:
4430367
Mfg#:
824512642KT
In Stock
ON SALE! SAVE 20%
$406.99

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

$324.46 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Lower Control Arm Bushing Set - Inner - Race

ES#2651754 - PFF3-202Bx2 - Front Lower Control Arm Bushing Set - Inner - Race - Improves handling and control - Upgrade to a more engaging driving experience - Powerflex Black Series - Audi Volkswagen

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

Brand:
Powerflex Black Series - Corporate Logo
ES#:
2651754
Mfg#:
PFF3-202BX2
Ships in 1 Business Day
$160.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Lower Control Arm Bushing Set - Inner

ES#3175221 - 140916-3H - Front Lower Control Arm Bushing Set - Inner - Upgrade to a more engaging driving experience - 2 axis camber / self-aligning - KMAC - Audi

Upgrade to a more engaging driving experience - 2 axis camber / self-aligning affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For the straight control arm

Brand:
KMAC - Corporate Logo
ES#:
3175221
Mfg#:
140916-3H
Special Order: No Guaranteed ETA
$320.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Front Sway Bar End Link Rebuild Kit

ES#4147672 - 034-402-Z020 - Adjustable Front Sway Bar End Link Rebuild Kit - 034Motorsport is proud to offer a rebuild kit for their MkV/MkVI/MkVII Volkswagen & 8J/8P/8V/8S, B8/B8.5/B9 Audi Adjustable Sway Bar End Links! - 034Motorsport - Audi

034Motorsport is proud to offer a rebuild kit for their MkV/MkVI/MkVII Volkswagen & 8J/8P/8V/8S, B8/B8.5/B9 Audi Adjustable Sway Bar End Links! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*To be used with adjustable end link kits: 034-402-4006, 034-402-4025, & 034-402-4002

Brand:
034Motorsport - Corporate Logo
ES#:
4147672
Mfg#:
034-402-Z020
Ships in 2 Business Days
$106.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Sport Shock - Priced Each

ES#4698693 - 82401319SPORT - Rear Sport Shock - Priced Each - Tighten up your Audi with these Koni shocks - Koni - Audi

Tighten up your Audi with these Koni shocks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles without electronic suspension

Brand:
Koni - Corporate Logo
ES#:
4698693
Mfg#:
82401319SPORT
Ships in 5 Business Days
ON SALE! SAVE 21%
$190.99

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

$151.80 USD
Free Shipping
on orders $49 and up

Front Sway Bar - 30mm

ES#1876401 - 70361 - Front Sway Bar - 30mm - Adjustable version - H&R - Audi

Adjustable version 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!

Brand:
H&R - Corporate Logo
ES#:
1876401
Mfg#:
70361
Ships in 3 Business Days
$360.00

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

$299.99 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

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings