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Audi A4 Performance Exterior Parts & Upgrades

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Audi B8.5 S4 / A4 S-Line Forged Carbon Fiber Front Lip

ES#4490853 - 013875ECS01-02 - Audi B8.5 S4 / A4 S-Line Forged Carbon Fiber Front Lip - Hand-laid chopped carbon fiber to upgrade your exterior styling - ECS - Audi

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

For S-Line models from the 2013 model year (Facelift)

Brand:
ECS - Corporate Logo
ES#:
4490853
Mfg#:
013875ECS01-02
In Stock
ON SALE! SAVE 36%
$940.99

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

$599.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Rear Bumper Side Splitters - Gloss Black

ES#4044452 - 024846ecs01KT1 - Audi B8.5 S4 / A4 S-Line Rear Bumper Side Splitters - Gloss Black - Spice up the exterior of your Audi with gloss black spats! - ECS - Audi

Spice up the exterior of your Audi with gloss black spats! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits 2013+ A4 S-Line and S4 rear bumpers

Brand:
ECS - Corporate Logo
ES#:
4044452
Mfg#:
024846ECS01KT1
In Stock
ON SALE! SAVE 25%
$139.99

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

$104.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi Pre-Facelift B8 A4 Trunk Spoiler - Gloss Black

ES#4027515 - 029251ECS01 - Audi Pre-Facelift B8 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!

For Pre-Facelift A4 without an integrated trunk spoiler

Brand:
ECS - Corporate Logo
ES#:
4027515
Mfg#:
029251ECS01
In Stock
ON SALE! SAVE 22%
$205.99

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

$160.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4/S4 Gloss Black Grille Accent Set - Pre Facelift

ES#3697647 - 027962ECS01 - Audi B8 A4/S4 Gloss Black Grille Accent Set - Pre Facelift - Upgrade your exterior styling - ECS - Audi

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

Fits Pre-Facelift sedan models with S-Line(S4) front bumpers up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3697647
Mfg#:
027962ECS01
In Stock
ON SALE! SAVE 15%
$188.99

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

$160.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 / A4 S-Line Rear Bumper Side Splitters - Gloss Black

ES#4164511 - 004751la01 - Audi B9 S4 / A4 S-Line Rear Bumper Side Splitters - Gloss Black - Spice up the exterior of your Audi with gloss black spats! - ECS - Audi

Spice up the exterior of your Audi with gloss black spats! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits pre-facelift S-Line models up to 2019 model year only

Brand:
ECS - Corporate Logo
ES#:
4164511
Mfg#:
004751LA01
Ships on Sep 8, 2026
Auto Notify
ON SALE! SAVE 25%
$133.99

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

$100.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Mirror Cap Set - Audi B8 A4/A5/S4/S5

ES#2816885 - 010257ECS03KT - Carbon Fiber Mirror Cap Set - Audi B8 A4/A5/S4/S5 - Upgrade your exterior look - ECS - Audi

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

For vehicles with lane change assist from the 2010 model year

Brand:
ECS - Corporate Logo
ES#:
2816885
Mfg#:
010257ECS03KT
In Stock
ON SALE! SAVE 12%
$381.99

This product was last offered at the strikethrough price on
07-15-2026

$334.92 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Fog Light Grille Overlay Set - Audi B8.5 A4/S4

ES#3419105 - 022928ecs01KT - Carbon Fiber Fog Light Grille Overlay Set - Audi B8.5 A4/S4 - Masks the aluminum-look trim strips on the fog light grilles with carbon fiber - ECS - Audi

Masks the aluminum-look trim strips on the fog light grilles with carbon fiber 10X Entries For Our 25th Anniversary Sweepstakes!

Fits Facelift models with S-Line(S4) front bumpers from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3419105
Mfg#:
022928ECS01KT
In Stock
ON SALE! SAVE 15%
$173.99

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

$147.89 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4 Non S-line Single Exit Rear Diffuser & Trunk Spoiler

ES#4751220 - 029251ECS01EB2KT - Audi B8 A4 Non S-line Single Exit 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!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751220
Mfg#:
029251ECS01EB2KT
In Stock
ON SALE! SAVE 26%
$617.99

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

$459.20 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 S4 / A4 S-Line Pre-facelift Front Lip & Gloss Black Grille Accent Set

ES#4751228 - 027962ECS01EBKT - Audi B8 S4 / A4 S-Line Pre-facelift Front Lip & Gloss Black Grille Accent Set - Upgrade your exterior styling! - Enthusiast Bundles - Audi

Upgrade your exterior styling! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!
Fits Pre-Facelift sedan models with S-Line(S4) front bumpers up to the 2012 model year

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751228
Mfg#:
027962ECS01EBKT
In Stock
ON SALE! SAVE 26%
$497.98

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

$369.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 Carbon Fiber Antenna Cover

ES#3468626 - 024985ECS01 - Audi B9 Carbon Fiber Antenna Cover - Add a unique, lightweight look to your B9 - ECS - Audi

Add a unique, lightweight look to your B9 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3468626
Mfg#:
024985ECS01
Ships in 7 Business Days
ON SALE! SAVE 20%
$100.99

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

$80.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Mirror Cap Set - Audi B6/B7/8P/C6

ES#2804800 - 010253ECS01KT - Carbon Fiber Mirror Cap Set - Audi B6/B7/8P/C6 - Upgrade your exterior look - ECS - Audi

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

Brand:
ECS - Corporate Logo
ES#:
2804800
Mfg#:
010253ECS01KT
In Stock
ON SALE!
$344.99

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

$333.90 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Tunnel Street Shield Aluminum Skid Plate Kit

ES#3610307 - 023780ecs02KT - ECS Tuning Tunnel Street Shield Aluminum Skid Plate Kit - Protect your vehicle's tunnel and improve aerodynamics - ECS - Audi

Protect your vehicle's tunnel and improve aerodynamics 10X Entries For Our 25th Anniversary Sweepstakes!
Fits Manual and DSG Transmissions

Brand:
ECS - Corporate Logo
ES#:
3610307
Mfg#:
023780ECS02KT
Ships in 4 Business Days
ON SALE! SAVE 10%
$334.00

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

$300.60 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Radiator Support Cover

ES#4220120 - 034-1ZZ-1005 - Carbon Fiber Radiator Support Cover - Designed to tastefully complement the factory engine bay with a beautiful carbon fiber weave, that is perfectly matched to their X34 Carbon Fiber Air Intake. - 034Motorsport - Audi

Designed to tastefully complement the factory engine bay with a beautiful carbon fiber weave, that is perfectly matched to their X34 Carbon Fiber Air Intake.

Brand:
034Motorsport - Corporate Logo
ES#:
4220120
Mfg#:
034-1ZZ-1005
In Stock
ON SALE! SAVE 10%
$324.00

This product was last offered at the strikethrough price on
06-28-2026

$291.60 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4 Pre Facelift Non S-Line Rear Diffuser - Single Outlet - Matte Black

ES#4445777 - 039684LA01-02 - Audi B8 A4 Pre Facelift Non S-Line Rear Diffuser - Single Outlet - Matte 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#:
4445777
Mfg#:
039684LA01-02
In Stock
ON SALE! SAVE 20%
$386.99

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

$309.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4/S4 Carbon Fiber Grille Accent Set - Pre Facelift

ES#3638709 - 027538ECS01 - Audi B8 A4/S4 Carbon Fiber Grille Accent Set - Pre Facelift - 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 with S-Line(S4) front bumpers up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3638709
Mfg#:
027538ECS01
In Stock
ON SALE! SAVE 34%
$546.99

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

$362.75 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B9.5 Mid-Facelift S4/A4 S-Line Front Chin Spoilers - Gloss Black

ES#4338535 - 007041la01KT1 - B9.5 Mid-Facelift S4/A4 S-Line Front Chin Spoilers - Gloss Black - Upgrade your exterior styling! - ECS - Audi

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

Fits 2019 Mid-Facelift S-Line Bumpers

Brand:
ECS - Corporate Logo
ES#:
4338535
Mfg#:
007041LA01KT1
In Stock
ON SALE! SAVE 25%
$283.99

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

$212.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Exterior Parts & Upgrades

Make your car stand out with our catalog of exterior upgrades like spoilers, diffusers, side skirts, and more.

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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