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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 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
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
06-02-2026

$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 2 Business 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 1-2 days
$649.99 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

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

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 1-2 days
$320.99

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

$265.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front & Rear Cup Kit/Coilover Installation Kit

ES#3691725 - 8w0412377AKT1 - Front & Rear Cup Kit/Coilover 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 closed loop suspension (Audi Drive Select / Adaptive suspension - PR-Code 1BL)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3691725
Mfg#:
8W0412377AKT1
Ships in 3 Business Days
$592.99

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

$581.99 USD
Free Shipping
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

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

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