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Audi S4 Lips, Spoilers & Side Skirts

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Audi B8.5 S4 / A4 S-Line Rear Diffuser - Gloss Black

ES#4147363 - 028807ecs01KT - Audi B8.5 S4 / A4 S-Line Rear Diffuser - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits facelift B8.5 (2013+) models only

Brand:
ECS - Corporate Logo
ES#:
4147363
Mfg#:
028807ECS01KT
In Stock
ON SALE! SAVE 20%
$407.99

This product was last offered at the strikethrough price on
06-13-2026

$326.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Gloss Black

ES#4164657 - 028806ecs01KT - Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles from the 2013 model year (Facelift)

Brand:
ECS - Corporate Logo
ES#:
4164657
Mfg#:
028806ECS01KT
In Stock
ON SALE! SAVE 25%
$388.99

This product was last offered at the strikethrough price on
06-13-2026

$291.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 Rear Diffuser - Gloss Black

ES#4056580 - 006077LA01 - Audi B9 S4 Rear Diffuser - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits pre-facelift models (up to 2019) without integrated tips in the rear valance

Brand:
ECS - Corporate Logo
ES#:
4056580
Mfg#:
006077LA01
In Stock
ON SALE! SAVE 20%
$420.99

This product was last offered at the strikethrough price on
06-13-2026

$336.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 Front Lip Spoiler - Gloss Black

ES#4147652 - 028802ecs01KT - Audi B9 A4/S4 Front Lip Spoiler - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! 10X Entries For Our 25th Anniversary Sweepstakes!

For 2018 Models Only

Brand:
ECS - Corporate Logo
ES#:
4147652
Mfg#:
028802ECS01KT
In Stock
ON SALE! SAVE 25%
$378.99

This product was last offered at the strikethrough price on
06-13-2026

$284.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 S4 Trunk Spoiler - Gloss Black

ES#3619834 - 026861ECS01 - Audi B8/B8.5 S4 Trunk Spoiler - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3619834
Mfg#:
026861ECS01
In Stock
ON SALE! SAVE 25%
$327.99

This product was last offered at the strikethrough price on
06-13-2026

$245.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 A4/S4 Flat Side Skirts - Gloss Black

ES#4045736 - 024716ecs02KT - Audi B8/B8.5 A4/S4 Flat Side Skirts - Gloss Black - Enhance your side profile with an aggressive look! - ECS - Audi

Enhance your side profile with an aggressive look! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4045736
Mfg#:
024716ECS02KT
In Stock
ON SALE! SAVE 20%
$346.99

This product was last offered at the strikethrough price on
06-13-2026

$277.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 S4 / A4 S-Line Rear Diffuser - Gloss Black

ES#4033487 - 028808ECS01 - Audi B8 S4 / A4 S-Line Rear Diffuser - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits pre-facelift B8 models only

Brand:
ECS - Corporate Logo
ES#:
4033487
Mfg#:
028808ECS01
In Stock
ON SALE! SAVE 20%
$420.99

This product was last offered at the strikethrough price on
06-13-2026

$336.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Splitter Style - Gloss Black

ES#4158342 - 025864ecs01aKT - Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Splitter Style - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles from the 2013 model year (Facelift)

Brand:
ECS - Corporate Logo
ES#:
4158342
Mfg#:
025864ECS01AKT
In Stock
ON SALE! SAVE 25%
$359.99

This product was last offered at the strikethrough price on
06-13-2026

$269.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4/A4 Trunk Spoiler - Gloss Black

ES#3981207 - 028801ECS01 - Audi B9 S4/A4 Trunk Spoiler - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! 10X Entries For Our 25th Anniversary Sweepstakes!

Requires removal of the factory trunk spoiler

Brand:
ECS - Corporate Logo
ES#:
3981207
Mfg#:
028801ECS01
In Stock
ON SALE! SAVE 25%
$289.99

This product was last offered at the strikethrough price on
06-13-2026

$217.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4 / S4 Flat Side Skirts - Gloss Black

ES#4163869 - 001734la01 - Audi B9 A4 / S4 Flat Side Skirts - Gloss Black - Enhance your side profile with an aggressive look! - ECS - Audi

Enhance your side profile with an aggressive look! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4163869
Mfg#:
001734LA01
In Stock
ON SALE! SAVE 20%
$363.99

This product was last offered at the strikethrough price on
06-13-2026

$291.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 S4 / A4 S-Line Pre-Facelift Front Lip - Gloss Black

ES#4164865 - 028805ecs01KT - Audi B8 S4 / A4 S-Line Pre-Facelift Front Lip - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles up to the 2012 model year (Pre-Facelift)

Brand:
ECS - Corporate Logo
ES#:
4164865
Mfg#:
028805ECS01KT
In Stock
ON SALE! SAVE 25%
$315.99

This product was last offered at the strikethrough price on
06-13-2026

$236.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Carbon Fiber Rear Diffuser

ES#3085916 - 018359ECS01A - Audi B8.5 S4 / A4 S-Line Carbon Fiber Rear Diffuser - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling 10X Entries For Our 25th Anniversary Sweepstakes!

From the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3085916
Mfg#:
018359ECS01A
In Stock
ON SALE! SAVE 10%
$1019.99

This product was last offered at the strikethrough price on
06-13-2026

$917.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 Facelift Rear Diffuser & Trunk Spoiler

ES#4751213 - 026861ECS01EBKT - Audi B8.5 S4 Facelift Rear Diffuser & Trunk Spoiler - Add some aggressive styling to your Audi! - Enthusiast Bundles - Audi

Add some aggressive styling to your Audi! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!
Fits facelift B8.5 (2013+) models only

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751213
Mfg#:
026861ECS01EBKT
In Stock
ON SALE! SAVE 49%
$785.48

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

$399.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 Carbon Fiber Rear Diffuser

ES#3247439 - 023797ECS01 - Audi B9 S4 Carbon Fiber Rear Diffuser - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling 10X Entries For Our 25th Anniversary Sweepstakes!

Fits pre-facelift models (up to 2019) without integrated tips in the rear valance

Brand:
ECS - Corporate Logo
ES#:
3247439
Mfg#:
023797ECS01
In Stock
ON SALE! SAVE 34%
$1029.99

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

$679.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B9.5 Mid-Facelift S4/A4 S-Line 3 Piece Front Lip - Gloss Black

ES#4338534 - 007041la01KT - B9.5 Mid-Facelift S4/A4 S-Line 3 Piece Front Lip - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! 10X Entries For Our 25th Anniversary Sweepstakes!

Only Fits 2019 Mid-Facelift Bumpers

Brand:
ECS - Corporate Logo
ES#:
4338534
Mfg#:
007041LA01KT
In Stock
ON SALE! SAVE 25%
$350.99

This product was last offered at the strikethrough price on
06-13-2026

$263.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Functional Aerodynamic Rear Wing Kit - Universal Fitment

ES#4509042 - 013903LA - Functional Aerodynamic Rear Wing Kit - Universal Fitment - Maximize rear tire contact with our in-house engineered, adjustable Carbon Fiber Rear Wing - ECS - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Maximize rear tire contact with our in-house engineered, adjustable Carbon Fiber Rear Wing 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4509042
Mfg#:
013903LA
In Stock
ON SALE!
Starting at $1652.78 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Lips, Spoilers & Side Skirts

Give your car a much-needed visual improvement with our selection of in-house designed front lips, side skirts, and rear spoilers, or choose from our industry-leading catalog of performance exterior upgrade companies you know and love.

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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