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Audi A4 Performance Parts & Upgrades

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performance Lightweight Flywheel Kit - Stage 2 Daily Clutch Kit

ES#2807486 - 003485ECS01AKT4 - performance Lightweight Flywheel Kit - Stage 2 Daily Clutch Kit - ECS Lightweight Flywheel with a Southbend Stage 2 clutch kit rated at 375ft/lbs - ECS - Audi

ECS Lightweight Flywheel with a Southbend Stage 2 clutch kit rated at 375ft/lbs 10X Entries Into Our F80 M3 Sweepstakes

Up to VIN 8K-9-066499, split is in the 2009 model year

Brand:
ECS - Corporate Logo
ES#:
2807486
Mfg#:
003485ECS01AKT4
Ships in 2 Business Days
ON SALE! SAVE 10%
$3014.99

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

$2713.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 Facelift Forged Carbon Front Lip & Rear Diffuser

ES#5446812 - 013868ECS0102CKT - Audi B8.5 S4 Facelift Forged Carbon Front Lip & Rear Diffuser - Hand-laid chopped carbon fiber to upgrade your exterior styling! - Enthusiast Bundles - Audi

Hand-laid chopped carbon fiber to upgrade your exterior styling! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!
Save an additional $100 when you bundle our Forged Carbon Front Lip AND Rear Diffuser!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
5446812
Mfg#:
013868ECS0102CKT
In Stock
ON SALE!
$899.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Mahle PowerPak Piston Set - 83mm Bore

ES#3476219 - MAHFSI197800168 - Mahle PowerPak Piston Set - 83mm Bore - Forged alloy pistons - 83mm Bore (+.5mm overbore), 20mm wrist pins, 9.25:1 compression ratio - Integrated Engineering - Audi Volkswagen

Forged alloy pistons - 83mm Bore (+.5mm overbore), 20mm wrist pins, 9.25:1 compression ratio

Brand:
Integrated Engineering - Corporate Logo
ES#:
3476219
Mfg#:
MAHFSI197800168
Ships in 4 Business Days
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BR Series Coilover Suspension Kit - Extreme Low

ES#3675603 - S-07E-BR - BR Series Coilover Suspension Kit - Extreme Low - Featuring 30 levels of adjustment and performance spring rates and valving - BC Racing - Audi

Featuring 30 levels of adjustment and performance spring rates and valving

Brand:
BC Racing - Corporate Logo
ES#:
3675603
Mfg#:
S-07E-BR
Ships on Dec 29, 2026
$1345.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BR Series Coilover Suspension Kit - Extreme Low

ES#4424821 - S-27E-BR - BR Series Coilover Suspension Kit - Extreme Low - Featuring 30 levels of adjustment and performance spring rates and valving - BC Racing - Audi

Featuring 30 levels of adjustment and performance spring rates and valving For vehicles with production date up to 7/11/2016 with 53mm front strut body without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
4424821
Mfg#:
S-27E-BR
Ships on Dec 29, 2026
$1345.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 17.5mm With Ball Seat Bolts

ES#2177175 - 6-ECS-023 - Wheel Spacer & Bolt Kit - 17.5mm With Ball Seat Bolts - Add some style to your Audi with these wheel spacers - ECS - Audi

Add some style to your Audi with these wheel spacers 10X Entries Into Our F80 M3 Sweepstakes
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2177175
Mfg#:
6-ECS-023
In Stock
ON SALE! SAVE 30%
$173.99

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

$121.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 8mm With Black Conical Seat Bolts

ES#2748281 - 6-ECS-018 - Wheel Spacer & Bolt Kit - 8mm With Black Conical Seat Bolts - Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels - ECS - Audi

Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels 10X Entries Into Our F80 M3 Sweepstakes
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748281
Mfg#:
6-ECS-018
In Stock
ON SALE! SAVE 10%
$134.99

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

$121.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacers - 20mm (Pair)

ES#250711 - 002403ECS03A20KT - ECS Wheel Spacers - 20mm (Pair) - Exclusively built for your 57.1mm centerbore VW/Audi - ECS - Audi Volkswagen

Exclusively built for your 57.1mm centerbore VW/Audi 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
250711
Mfg#:
002403ECS03A20KT
In Stock
ON SALE! SAVE 10%
$140.99

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

$126.89 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Lightweight Flywheel Kit - Stage 2 Daily Clutch Kit

ES#2807485 - 003485ECS01AKT3 - Performance Lightweight Flywheel Kit - Stage 2 Daily Clutch Kit - ECS Lightweight Flywheel with a Southbend Stage 2 clutch kit rated at 375ft/lbs - ECS - Audi

ECS Lightweight Flywheel with a Southbend Stage 2 clutch kit rated at 375ft/lbs 10X Entries Into Our F80 M3 Sweepstakes

From VIN 8K-9-066500, split is in the 2009 model year

Brand:
ECS - Corporate Logo
ES#:
2807485
Mfg#:
003485ECS01AKT3
Ships in 2 Business Days
ON SALE! SAVE 10%
$2943.99

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

$2649.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear EP24 "Enthusiast Performance" Brake Pad Set

ES#4739061 - EP24-1108 - Rear EP24 "Enthusiast Performance" Brake Pad Set - This enthusiast-developed high-performance street and light track pad offers an ideal solution for the spirited commuter and weekend autocross driver alike. - ECS - Audi Volkswagen

This enthusiast-developed high-performance street and light track pad offers an ideal solution for the spirited commuter and weekend autocross driver alike. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4739061
Mfg#:
EP24-1108
In Stock
ON SALE! SAVE 25%
$97.99

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

$73.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Complete Carbon Fiber Exterior Package

ES#3236268 - 019196ecs01KT - Complete Carbon Fiber Exterior Package - Revamp your B9 A4 S-Line with a complete hand-laid carbon fiber kit - ECS - Audi

Revamp your B9 A4 S-Line with a complete hand-laid carbon fiber kit 10X Entries Into Our F80 M3 Sweepstakes
Save an additional $100 with this exclusive bundle!

Brand:
ECS - Corporate Logo
ES#:
3236268
Mfg#:
019196ECS01KT
Ships on Apr 8, 2027
ON SALE! SAVE 10%
$2950.45

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

$2645.51 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Rubber Rear Shock Mount - Priced Each

ES#4681140 - 049327LA01 - Heavy Duty Rubber Rear Shock Mount - Priced Each - Enhance longevity and improve your Audi's handling with our in-house designed HD rubber shock mount! - ECS - Audi

Enhance longevity and improve your Audi's handling with our in-house designed HD rubber shock mount! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4681140
Mfg#:
049327LA01
In Stock
ON SALE!
$44.99

This product was last offered at the strikethrough price on
09-01-2026

$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer & Bolt Kit - 10mm With Ball Seat Bolts

ES#2649762 - 00240302A10KT2 - ECS Wheel Spacer & Bolt Kit - 10mm With Ball Seat Bolts - Includes everything you need to install spacers on two wheels - ECS - Audi Volkswagen

Includes everything you need to install spacers on two wheels 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2649762
Mfg#:
00240302A10KT2
In Stock
ON SALE! SAVE 30%
$144.99

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

$101.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 Front Lip Spoiler With Trunk Spoiler

ES#4750957 - 028802ECSEBKT - Audi B9 A4/S4 Front Lip Spoiler With Trunk Spoiler - 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!
For S-Line models only. Fits up to 2019 model year with *pre-facelift* front bumpers

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4750957
Mfg#:
028802ECSEBKT
In Stock
$655.78 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 Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4445777
Mfg#:
039684LA01-02
In Stock
ON SALE! SAVE 25%
$386.99

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

$290.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.

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