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Audi S4 Cup Kits

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Cup Kit/Coilover Installation Kit

ES#2762762 - 8K0412377CKT5 - Cup Kit/Coilover Installation Kit - Includes all necessary items for a quick and easy install. - Assembled By ECS - Audi

Includes all necessary items for a quick and easy install. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2762762
Mfg#:
8K0412377CKT5
Ships on Jul 1, 2026
Auto Notify
ON SALE! SAVE 15%
$381.22

This product was last offered at the strikethrough price on
12-05-2025

$322.62 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cup Kit/Coilover Installation Kit

ES#2581959 - 4F0513353DKT - Cup Kit/Coilover Installation Kit - Includes shock/strut mounts, spring pads, and hardware - Assembled By ECS - Audi

Includes shock/strut mounts, spring pads, and hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2581959
Mfg#:
4F0513353DKT
Ships in 1-2 days
ON SALE! SAVE 10%
$336.99

This product was last offered at the strikethrough price on
04-20-2026

$304.06 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Bilstein B12 Pro-Kit Suspension System

ES#2983800 - 46-183330 - 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
For Vehicles Without Electronic Suspension
Lowers 35mm front, 30mm rear

Brand:
Bilstein - Corporate Logo
ES#:
2983800
Mfg#:
46-183330
In Stock
17% off MSRP

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

$1155.00

This product was last offered at the strikethrough price on
06-03-2026

$959.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cup Kit/Coilover Installation Kit

ES#3663817 - 8k0412377cktKT6 - Cup Kit/Coilover Installation Kit - Includes 034 Density Line Front Upper Strut Mounts, and all necessary items for a quick and easy install. - Assembled By ECS - Audi

Includes 034 Density Line Front Upper Strut Mounts, and all necessary items for a quick and easy install. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3663817
Mfg#:
8K0412377CKTKT6
Ships on Jul 1, 2026
Auto Notify
ON SALE! SAVE 14%
$440.44

This product was last offered at the strikethrough price on
12-05-2025

$379.52 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cup Kit - H&R OE Sport Springs With Bilstein Sport Shocks

ES#3010022 - 50361-55kt - Cup Kit - H&R OE Sport Springs With Bilstein Sport Shocks - Perfect combination of handling & ride quality - Assembled By ECS - Audi

Perfect combination of handling & ride quality affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3010022
Mfg#:
50361-55KT
Ships on Sep 3, 2026
Auto Notify
$1353.99

This product was last offered at the strikethrough price on
05-22-2026

$1157.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Rubber Rear Shock Mount Kit With Installation Hardware

ES#4821196 - 049313LA01KT - Heavy Duty Rubber Rear Shock Mount Kit With Installation Hardware - Enhance longevity and improve your Audi's handling with our in-house designed HD rubber shock mount kit! - ECS - Audi

Enhance longevity and improve your Audi's handling with our in-house designed HD rubber shock mount kit! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4821196
Mfg#:
049313LA01KT
In Stock
ON SALE!
$178.28

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

$177.14 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

H&R Sport Spring & Bilstein Sport Shocks - Cup Kit

ES#629 - 29477-1BSC - H&R Sport Spring & Bilstein Sport Shocks - Cup Kit - Perfect combination of handing & ride quality - Assembled By ECS - Audi

Perfect combination of handing & ride quality affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
629
Mfg#:
29477-1BSC
Ships in 4 Business Days
$1129.99

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

$1004.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cup Kit - H&R Sport Springs With Bilstein Sport Shocks

ES#2739504 - 50361KT - Cup Kit - H&R Sport Springs With Bilstein Sport Shocks - Perfect combination of handling & ride quality - Assembled By ECS - Audi

Perfect combination of handling & ride quality affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2739504
Mfg#:
50361KT
Ships on Sep 3, 2026
Auto Notify
$1395.99

This product was last offered at the strikethrough price on
05-22-2026

$1199.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Suspension Install Kit

ES#2762760 - 8K0513353EKT1 - Rear Suspension Install Kit - All hardware and mounts necessary to install new suspension - Assembled By ECS - Audi

All hardware and mounts necessary to install new suspension affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2762760
Mfg#:
8K0513353EKT1
Ships on Jul 1, 2026
Auto Notify
ON SALE! SAVE 19%
$315.20

This product was last offered at the strikethrough price on
12-05-2025

$256.18 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Suspension Installation Kit

ES#4475958 - 8K0412377C71KT - Front Suspension Installation Kit - Assembled By ECS - Audi

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

Brand:
Assembled By ECS - Corporate Logo
ES#:
4475958
Mfg#:
8K0412377C71KT
Ships in 1-2 days
ON SALE!
$248.88

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

$237.77 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Suspension Install Kit

ES#2762728 - 4F0513353DKT2 - Rear Suspension Install Kit - All hardware and mounts necessary to install new suspension - Assembled By ECS - Audi

All hardware and mounts necessary to install new suspension affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2762728
Mfg#:
4F0513353DKT2
Ships in 1-2 days
$218.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with standard & sport suspension (PR-Codes 1BA, 1BE)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3691724
Mfg#:
8W0412377KT1
Ships in 3 Business Days
$658.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8/B8.5 A4/S4 Lowering Springs, Shocks & Installation Kit

ES#4708852 - 047330LA02KT - B8/B8.5 A4/S4 Lowering Springs, Shocks & Installation Kit - Dramatically improve looks and handling with and average lowering up to 1.6" front and rear. Paired with ECS Tuning Cup Kit Installation Kit & Bilstein B8 Shocks - Assembled By ECS - Audi

Dramatically improve looks and handling with and average lowering up to 1.6" front and rear. Paired with ECS Tuning Cup Kit Installation Kit & Bilstein B8 Shocks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4708852
Mfg#:
047330LA02KT
Ships on Sep 3, 2026
Auto Notify
$1745.14

This product was last offered at the strikethrough price on
05-04-2026

$1544.76 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Suspension Installation Kit

ES#3691715 - 8w0412377KT - Front Suspension Installation Kit - Includes front strut mounts and associated hardware for a complete front suspension installation - Genuine Volkswagen Audi - Audi

Includes front strut mounts and associated hardware for a complete front suspension installation affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with standard & sport suspension (PR-Codes 1BA, 1BE)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3691715
Mfg#:
8W0412377KT
Ships in 3 Business Days
$320.99

This product was last offered at the strikethrough price on
03-31-2026

$267.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Shock Mount Installation Kit

ES#4821182 - 8K0513353EKT2 - Rear Shock Mount Installation Kit - Includes everything you need to install new rear shock mounts! - Assembled By ECS - Audi

Includes everything you need to install new rear shock mounts! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4821182
Mfg#:
8K0513353EKT2
In Stock
ON SALE!
$78.22 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

H&R Sport Springs & Bilstein Sport Shock Combo

ES#1263 - 29921BSC - H&R Sport Springs & Bilstein Sport Shock Combo - (Avg. Low 1.25"F 1.2"R) Perfect combination of handling & ride comfort, Sedan Only - Assembled By ECS - Audi

(Avg. Low 1.25"F 1.2"R) Perfect combination of handling & ride comfort, Sedan Only affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
1263
Mfg#:
29921BSC
Ships in 4 Business Days
$1178.99 USD
This product is lifetime replacement eligible Lifetime Replacement

More About Cup Kits

More than a kit with matched components, a Cup Kit is a suspension lowering solution engineered for a specific make and model. Cup kits combine lowering and enhanced handling with ride comfort that's suitable for daily driving; all in a convenient, affordable package.

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.

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