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Audi A4 Performance Parts & Upgrades

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X34 Carbon Fiber Intake Air Duct

ES#3988147 - 034-108-1024 - X34 Carbon Fiber Intake Air Duct - The perfect companion to the 034Motorsport X34 Carbon Fiber Cold Air Intake System - 034Motorsport - Audi

The perfect companion to the 034Motorsport X34 Carbon Fiber Cold Air Intake System *To be used with 034Motorsport X34 Intake System or most aftermarket intakes that utilize the OEM air duct*

Brand:
034Motorsport - Corporate Logo
ES#:
3988147
Mfg#:
034-108-1024
Ships in 2 Business Days
$377.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear GD Sport Rotors - Pair (330x22)

ES#2621910 - GD1846 - Rear GD Sport Rotors - Pair (330x22) - Upgrade to a slotted/dimpled rotor for improved braking - EBC - Audi

Upgrade to a slotted/dimpled rotor for improved braking 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
EBC - Corporate Logo
ES#:
2621910
Mfg#:
GD1846
In Stock at Vendor
5% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$396.99

This product was last offered at the strikethrough price on
07-28-2026

$376.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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 For Our 25th Anniversary Sweepstakes!

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

Brand:
ECS - Corporate Logo
ES#:
2807490
Mfg#:
003485ECS01AKT8
Ships on Sep 25, 2026
Auto Notify
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

Rennline 10mm Wheel Spacers - Black (Pair)

ES#4755582 - LS23.10MM - Rennline 10mm Wheel Spacers - Black (Pair) - Improve the look of your vehicle with spacers - Rennline - Audi Porsche

Improve the look of your vehicle with spacers

Brand:
Rennline - Corporate Logo
ES#:
4755582
Mfg#:
LS23.10MM
Ships in 4 Business Days
$125.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sport Spring Set

ES#3545274 - 29061-2KT1 - Sport Spring Set - Unrivaled comfort and performance - H&R - Audi

Unrivaled comfort and performance 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Fits Avant models only - Average lowering of 1.2"F 1.2"R

Brand:
H&R - Corporate Logo
ES#:
3545274
Mfg#:
29061-2KT1
Ships in 3 Business Days
$439.00

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

$373.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supertech Stainless Intake Valve Kit

ES#3647524 - ST-AIVN-1103KT - Supertech Stainless Intake Valve Kit - Stock sized valve head diameter, factory triple groove keeper setup - Includes Supertech valves and IE valve seals - Assembled By ECS - Audi Volkswagen

Stock sized valve head diameter, factory triple groove keeper setup - Includes Supertech valves and IE valve seals 10X Entries For Our 25th Anniversary Sweepstakes!
*Existing factory triple-groove valve keepers are to be reused*

Brand:
Assembled By ECS - Corporate Logo
ES#:
3647524
Mfg#:
ST-AIVN-1103KT
Ships in 6 Business Days
$373.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Kevlar Reinforced Accessory Belt

ES#3677913 - 06B903137D - Performance Kevlar Reinforced Accessory Belt - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. - ECS - Audi
ECS Tuning recommends this product.

Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. 10X Entries For Our 25th Anniversary Sweepstakes!

Up to VIN 8E-4-191000, split is in the 2004 model year

Brand:
ECS - Corporate Logo
ES#:
3677913
Mfg#:
06B903137D
Ships in 9 Business Days
Auto Notify
$50.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4/S4 Master LED Interior Lighting Kit - Red

ES#3137465 - 019396ECS01KT - Audi B8 A4/S4 Master LED Interior Lighting Kit - Red - Transform your complete interior in minutes with new LED interior bulbs from Ziza - ZiZa - Audi

Transform your complete interior in minutes with new LED interior bulbs from Ziza 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ZiZa - Corporate Logo
ES#:
3137465
Mfg#:
019396ECS01KT
In Stock
ON SALE! SAVE 50%
$117.99

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

$59.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Racingline Billet Body Brace

ES#3570410 - VWR814100 - Racingline Billet Body Brace - Sharpen up your B9 Audi's handling response and steering feel! - Racingline - Audi

Sharpen up your B9 Audi's handling response and steering feel!

Brand:
Racingline - Corporate Logo
ES#:
3570410
Mfg#:
VWR814100
Ships in 1 Business Day
$558.99 USD
Free Shipping
on orders $49 and up
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

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

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

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 on Sep 14, 2026
Auto Notify
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

More About Performance Parts & Upgrades

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