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Audi A4 Performance Parts & Upgrades

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Performance Lightweight Flywheel Kit

ES#2807490 - 003485ECS01AKT8 - Performance Lightweight Flywheel Kit - A single mass flywheel engineered to handle more power and offers a 32% weight reduction! - ECS - Audi

A single mass flywheel engineered to handle more power and offers a 32% weight reduction! 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#:
2807490
Mfg#:
003485ECS01AKT8
Ships on Nov 13, 2026
ON SALE! SAVE 25%
$1501.99

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

$1126.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Mount Intercooler Kit - Large Core - Black Couplers

ES#4142092 - B720TFMICLC-BLAC - Front Mount Intercooler Kit - Large Core - Black Couplers - Featuring a robust 3" thick core, ensuring the best cooling performance possible! Includes charge piping for Ko3/Ko4 Turbos - JH Motorsports - Audi

Featuring a robust 3" thick core, ensuring the best cooling performance possible! Includes charge piping for Ko3/Ko4 Turbos

Brand:
JH Motorsports - Corporate Logo
ES#:
4142092
Mfg#:
B720TFMICLC-BLAC
In Stock
Limited Qty Sale
$1149.99

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

$1115.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Combination Parking Brake Caliper Rear Brake Kit

Features 12.19" slotted rotors & red calipers - Provides balanced brake performance and style to compliment front big brake kits!

Brand:
Wilwood - Corporate Logo
ES#:
3701667
Mfg#:
140-14591-R
Ships in 10 Business Days
$1114.99 USD
This product is lifetime replacement eligible Lifetime Replacement

IE Core ECU Tune With POWERlink Cable

ES#5457714 - IESOWG11 - IE Core ECU Tune With POWERlink Cable - The perfect entry point for a stock car, delivering a massive Stage 1 power bump with no additional hardware required. - Integrated Engineering - Audi

The perfect entry point for a stock car, delivering a massive Stage 1 power bump with no additional hardware required. Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!
Please see "fitment notes" in the description for full vehicle information.

Brand:
Integrated Engineering - Corporate Logo
ES#:
5457714
Mfg#:
IESOWG11
In Stock
Starting at $184.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Front Strut Brace

ES#3970173 - 034-603-0010 - Billet Aluminum Front Strut Brace - Designed to limit lateral deflection from the strut towers and improve handling performance without sacrificing ride quality - 034Motorsport - Audi

Designed to limit lateral deflection from the strut towers and improve handling performance without sacrificing ride quality 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3970173
Mfg#:
034-603-0010
Ships in 2 Business Days
$554.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4 2.0T Single Exit Non-Resonated Valved Cat Back Exhaust System & Luft-Technik Intake System

ES#4751113 - 049033ECSEBKT - Audi B8 A4 2.0T Single Exit Non-Resonated Valved Cat Back Exhaust System & Luft-Technik Intake System - Transform the sound and performance of your vehicle with a cat-back and a Luft-Technik Intake System - Enthusiast Bundles - Audi

Transform the sound and performance of your vehicle with a cat-back and a Luft-Technik Intake System Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751113
Mfg#:
049033ECSEBKT
Ships in 1 Business Day
ON SALE! SAVE 31%
$1599.98

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

$1099.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RA4 240mm Clutch Conversion Kit - Stage 2, Driveshaft Center Support Bearing Carrier & Rear Differential Mount

ES#4751081 - ECSB6A4RS4CCEBKT - RA4 240mm Clutch Conversion Kit - Stage 2, Driveshaft Center Support Bearing Carrier & Rear Differential Mount - Lightweight flywheel with the RS4 pressure plate and disc - Enthusiast Bundles - Audi

Lightweight flywheel with the RS4 pressure plate and disc Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751081
Mfg#:
ECSB6A4RS4CCEBKT
Ships in 5 Business Days
ON SALE! SAVE 17%
$1331.62

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

$1099.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Audi B6/B7 A4 Solo-Werks S1 Coilovers

ES#2777315 - s1au002 - Audi B6/B7 A4 Solo-Werks S1 Coilovers - Set your vehicle low and tight for optimal performance - Solo-Werks - Audi

Set your vehicle low and tight for optimal performance Fits Avant models only. Lowering front: 1.4" - 2.4", rear: 1.4" - 2.4"

Brand:
Solo-Werks - Corporate Logo
ES#:
2777315
Mfg#:
S1AU002
Ships on Dec 16, 2026
$549.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

ES#659 - 50396BSC - 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 10X Entries Into Our F80 M3 Sweepstakes
Fits Sedan models only. Up to VIN 8D-1-030000, split is in the 2001 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
659
Mfg#:
50396BSC
Ships in 3 Business Days
$1155.00

This product was last offered at the strikethrough price on
07-01-2026

$1095.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

ES#660 - 299961BSC - Cup Kit - H&R Race Springs With Bilstein Sport Shocks - Aggressive looks with ultimate handling for your A4 Sedan - Assembled By ECS - Audi

Aggressive looks with ultimate handling for your A4 Sedan 10X Entries Into Our F80 M3 Sweepstakes
Fits Sedan models only. Up to VIN 8D-1-030000, split is in the 2001 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
660
Mfg#:
299961BSC
Ships in 3 Business Days
$1155.00

This product was last offered at the strikethrough price on
07-01-2026

$1095.99 USD
This product is lifetime replacement eligible Lifetime Replacement

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

ES#5796 - 299961BSCLV - Cup Kit - H&R Race Springs With Bilstein Sport Shocks - Aggressive looks with ultimate handling - Assembled By ECS - Audi

Aggressive looks with ultimate handling 10X Entries Into Our F80 M3 Sweepstakes
Fits Sedan models only. From VIN 8D-1-030000, split is in the 2001 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
5796
Mfg#:
299961BSCLV
Ships in 3 Business Days
$1155.00

This product was last offered at the strikethrough price on
07-01-2026

$1095.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Sport Cat Downpipe W/200 CPSI Catalytic Converter

Delivers more power, especially in the low and mid rev range while adding a deep sporty sound. For vehicles up through 2020

Brand:
Armytrix - Corporate Logo
ES#:
4616390
Mfg#:
AUB9-CD
Ships in 10 Business Days
$1090.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ST X Performance Coilover System - Fixed Damping

ES#4056701 - 13210058 - ST X Performance Coilover System - Fixed Damping - Average lowering of 1.4'' to 2.4'' front and 1.4'' to 2.6'' rear. - Suspension Techniques - Audi

Average lowering of 1.4'' to 2.4'' front and 1.4'' to 2.6'' rear. Avant models only

Brand:
Suspension Techniques - Corporate Logo
ES#:
4056701
Mfg#:
13210058
Back Ordered
$1089.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ST X Performance Coilover System - Fixed Damping

ES#4056522 - 13210032 - ST X Performance Coilover System - Fixed Damping - Set your vehicle low and tight for optimal performance. - Suspension Techniques - Audi

Set your vehicle low and tight for optimal performance. Height adjustable from 1.6" to 2.8" Front & Rear

Brand:
Suspension Techniques - Corporate Logo
ES#:
4056522
Mfg#:
13210032
Back Ordered
$1089.00 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.

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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