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Audi A4 Performance Parts & Upgrades

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IE Polymer Air Intake System - B9/B9.5 A4 & A5 2.0T

ES#4674685 - IEINCK6 - IE Polymer Air Intake System - B9/B9.5 A4 & A5 2.0T - Power gains of up to 10-20HP on tuned engines! - Integrated Engineering - Audi

Power gains of up to 10-20HP on tuned engines! 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
4674685
Mfg#:
IEINCK6
In Stock
$522.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 15mm With Black Conical Seat Bolts

ES#2748287 - 002411ECS03AKT1 - Wheel Spacer & Bolt Kit - 15mm 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 For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748287
Mfg#:
002411ECS03AKT1
In Stock
ON SALE! SAVE 25%
$167.99

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

$125.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Front Sway Bar End Link Set - Audi B8/Porsche Macan

ES#3176605 - 003112ECS01 - Adjustable Front Sway Bar End Link Set - Audi B8/Porsche Macan - Attaches sway bar to control arm, adjustable to increase clearance between sway bar and axles. Offers just under 2" of adjustability! - ECS - Audi Porsche

Attaches sway bar to control arm, adjustable to increase clearance between sway bar and axles. Offers just under 2" of adjustability! 10X Entries For Our 25th Anniversary Sweepstakes!
Minimum length of 157MM. Maximum length of 205MM

Brand:
ECS - Corporate Logo
ES#:
3176605
Mfg#:
003112ECS01
In Stock
ON SALE! SAVE 25%
$224.99

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

$168.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacers - 12.5mm (Pair)

ES#2603074 - 002411ECS02A13KT - ECS Wheel Spacers - 12.5mm (Pair) - Improve the look of your vehicle with spacers - ECS - Audi BMW Porsche

Improve the look of your vehicle with spacers 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2603074
Mfg#:
002411ECS02A13KT
In Stock
ON SALE! SAVE 25%
$131.99

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

$98.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet X-Brace - Red - Audi B8.5/Porsche Macan

ES#4220369 - 004802LA01AKT2 - Billet X-Brace - Red - Audi B8.5/Porsche Macan - Improve steering feel and handling! - ECS - Audi Porsche

Improve steering feel and handling! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits Facelift models from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
4220369
Mfg#:
004802LA01AKT2
Ships on Aug 17, 2026
Auto Notify
ON SALE! SAVE 25%
$483.99

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

$362.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/A5 2.0T Center Resonator Delete

ES#3576157 - 023492ecs01KT - Audi B9 A4/A5 2.0T Center Resonator Delete - Add an aggressive exhaust sound with this Resonator Delete Pipe Kit! Deletes rear-most resonator. - ECS - Audi

Add an aggressive exhaust sound with this Resonator Delete Pipe Kit! Deletes rear-most resonator. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3576157
Mfg#:
023492ECS01KT
In Stock
ON SALE! SAVE 25%
$354.99

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

$266.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Density Line Lower Control Arms

ES#4505755 - 034-401-1069 - Density Line Lower Control Arms - Replace your aging factory fluid-filled bushings with Density Line 65 durometer bushings in this comprehensive control arm kit - 034Motorsport - Audi

Replace your aging factory fluid-filled bushings with Density Line 65 durometer bushings in this comprehensive control arm kit

Brand:
034Motorsport - Corporate Logo
ES#:
4505755
Mfg#:
034-401-1069
In Stock
$657.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

OE Sport Springs - Set

ES#1876359 - 50361-55 - OE Sport Springs - Set - Mild lowering for the daily driver. Average lowering of 1.2"F 1.2" R - H&R - Audi

Mild lowering for the daily driver. Average lowering of 1.2"F 1.2" R 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Sedan models only

Brand:
H&R - Corporate Logo
ES#:
1876359
Mfg#:
50361-55
In Stock
15% off MSRP

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

$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

Luft-Technik B9 A4 Intercooler And Charge Pipe Kit

ES#3557444 - 019219ecs01aKT2 - Luft-Technik B9 A4 Intercooler And Charge Pipe Kit - Full kit to upgrade your charge pipes and FMIC - ECS - Audi

Full kit to upgrade your charge pipes and FMIC 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles with production date up through 2020

Brand:
ECS - Corporate Logo
ES#:
3557444
Mfg#:
019219ECS01AKT2
Ships on Oct 12, 2026
Auto Notify
ON SALE! SAVE 15%
$1060.99

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

$901.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

MQB Magnetic Drain Plug - With 5 Replacement O-Rings

ES#4006896 - 015137ecs02KT - MQB Magnetic Drain Plug - With 5 Replacement O-Rings - Capture harmful particulates from circulating within your oiling system and make services easier with our 13mm hex drive - ECS - Audi Volkswagen Porsche

Capture harmful particulates from circulating within your oiling system and make services easier with our 13mm hex drive 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4006896
Mfg#:
015137ECS02KT
In Stock
ON SALE! SAVE 25%
$50.99

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

$38.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Track Density Line Motor Mounts Kit

ES#2918007 - 034-509-0048KT - Track Density Line Motor Mounts Kit - Void-free and fluid-free, eliminating the slop associated with the factory mounts - 034Motorsport - Audi

Void-free and fluid-free, eliminating the slop associated with the factory mounts

Brand:
034Motorsport - Corporate Logo
ES#:
2918007
Mfg#:
034-509-0048KT
In Stock
$546.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Magnetic Oil Drain Plug

ES#3187653 - 001196ECS01-01 - Magnetic Oil Drain Plug - Capture harmful particles to prevent wear. M14x1.5. Includes washer. - ECS - Audi Volkswagen MINI Porsche

Capture harmful particles to prevent wear. M14x1.5. Includes washer. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3187653
Mfg#:
001196ECS01-01
In Stock
ON SALE! SAVE 25%
$28.99

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

$21.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Blow-Off Valve Kit - *Limited Edition* Red*

ES#3191205 - FMDVMK7A-R - Blow-Off Valve Kit - *Limited Edition* Red* - LIMITED EDITION version of Forge's very popular BOV - Forge - Audi Volkswagen Porsche

LIMITED EDITION version of Forge's very popular BOV Limited Editions ONLY at ECS Tuning : Limited Stock so Act Fast

Brand:
Forge - Corporate Logo
ES#:
3191205
Mfg#:
FMDVMK7A-R
Ships in 4 Business Days
$299.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Front Upper Control Arm Kit

ES#3557373 - 8136181362KT - Adjustable Front Upper Control Arm Kit - Correct your camber and eliminate inner tire wear - Complete kit for both sides! - SPC - Audi

Correct your camber and eliminate inner tire wear - Complete kit for both sides!

Brand:
SPC - Corporate Logo
ES#:
3557373
Mfg#:
8136181362KT
Ships in 6 Business Days
$899.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

LUK Audi RS4 Clutch Kit

ES#2538757 - 078198123G - LUK Audi RS4 Clutch Kit - Revive the response & feel of your transmission with an RS4 clutch - LUK - Audi Volkswagen

Revive the response & feel of your transmission with an RS4 clutch We Price Match - Give Us A Call or Chat!
Replacement clutch kit for the RA4 Stage 2 conversion

Brand:
LUK - Corporate Logo
ES#:
2538757
Mfg#:
078198123G
In Stock
$504.89

This product was last offered at the strikethrough price on
05-20-2026

$461.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Front Sway Bar End Links - Pair

ES#4841517 - 034-402-4039 - Density Line Front Sway Bar End Links - Pair - Replace your flimsy, imprecise OEM sway bar end links with these performance-engineered units! - 034Motorsport - Audi Porsche

Replace your flimsy, imprecise OEM sway bar end links with these performance-engineered units!

Brand:
034Motorsport - Corporate Logo
ES#:
4841517
Mfg#:
034-402-4039
In Stock
$112.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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