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Audi A4 Performance Parts & Upgrades

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JE Performance Piston Set

ES#4338074 - JE-18T-242880 - JE Performance Piston Set - Includes rings, wire locks, and wrist pins - 81mm bore (stock), 9.25:1 CR, 86.4mm stroke (stock) - JE Piston - Audi Volkswagen

Includes rings, wire locks, and wrist pins - 81mm bore (stock), 9.25:1 CR, 86.4mm stroke (stock) *For use with 20mm wrist pin connecting rods*

Brand:
JE Piston - Corporate Logo
ES#:
4338074
Mfg#:
JE-18T-242880
Ships on Aug 10, 2026
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Street Density Line Transmission Mount

ES#2952012 - 034-509-4001sd - Street Density Line Transmission Mount - Increase performance and durability without sacrificing comfort - 034Motorsport - Audi

Increase performance and durability without sacrificing comfort

Brand:
034Motorsport - Corporate Logo
ES#:
2952012
Mfg#:
034-509-4001SD
In Stock
$116.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

ES#2748194 - ECS10157KTWBC1 - ECS Wheel Spacer & Bolt Kit - 15mm With Black Conical 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 For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that require conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748194
Mfg#:
ECS10157KTWBC1
In Stock
ON SALE! SAVE 15%
$164.99

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

$140.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Bushing Differential Mount Insert Kit

ES#2992520 - 008288ECS02 - Rear Bushing Differential Mount Insert Kit - Decrease differential slop for better drivetrain response! - ECS - Audi Porsche

Decrease differential slop for better drivetrain response! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2992520
Mfg#:
008288ECS02
In Stock
ON SALE! SAVE 25%
$115.99

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

$86.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Baffled Oil Catch Can System - Audi B7 A4 2.0T

ES#2966735 - 010371ecs01KT - Performance Baffled Oil Catch Can System - Audi B7 A4 2.0T - Keep your intake tract clean and carbon free - ECS - Audi

Keep your intake tract clean and carbon free 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2966735
Mfg#:
010371ECS01KT
Ships on Dec 8, 2026
ON SALE!
$576.99

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

$548.14 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

ES#2603073 - 002411ECS02AKT2 - Wheel Spacer & Bolt Kit - 10mm With Ball Seat Bolts - Complete kit for two wheels, includes everything you need to install spacers - ECS - Audi

Complete kit for two wheels, includes everything you need to install spacers 10X Entries For Our 25th Anniversary Sweepstakes!
Fits OE wheels, or wheels that use OE ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2603073
Mfg#:
002411ECS02AKT2
Back Ordered
Auto Notify
ON SALE!
$140.99

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

$133.94 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Short Throw Shifter - Audi B6/B7 A4/S4

ES#3023144 - 009198ECS01 - Adjustable Short Throw Shifter - Audi B6/B7 A4/S4 - Find your perfect setting with 3 steps of throw reduction - ECS - Audi

Find your perfect setting with 3 steps of throw reduction 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3023144
Mfg#:
009198ECS01
In Stock
ON SALE!
$393.99

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

$373.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2.0T Billet Boost Tap Assembly

ES#2718328 - 003621ECS01A - 2.0T Billet Boost Tap Assembly - Designed for the 2.0T engine, up to two boost tap points, and comes with necessary hardware - ECS - Audi Volkswagen

Designed for the 2.0T engine, up to two boost tap points, and comes with necessary hardware 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2718328
Mfg#:
003621ECS01A
In Stock
ON SALE!
$98.99

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

$94.04 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B6/B7 Manual - Driveshaft Center Support Bearing Carrier

ES#4616120 - 012185la01KT - B6/B7 Manual - Driveshaft Center Support Bearing Carrier - As our beloved B6/B7 age the stock center support bearing starts to wear out causing drivetrain clunk. This upgrade keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing - ECS - Audi

As our beloved B6/B7 age the stock center support bearing starts to wear out causing drivetrain clunk. This upgrade keeps the driveshaft firmly in place at all times and its polyurethane construction ensures it will outlast the squishy rubber bushing 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4616120
Mfg#:
012185LA01KT
In Stock
ON SALE! SAVE 25%
$302.99

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

$227.24 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Density Line Front Upper Strut Mount - Priced Each

ES#2966732 - 034-601-1003-TD - Density Line Front Upper Strut Mount - Priced Each - Approximately twice as stiff as stock, for increased firmness and vehicle control - 034Motorsport - Audi

Approximately twice as stiff as stock, for increased firmness and vehicle control

Brand:
034Motorsport - Corporate Logo
ES#:
2966732
Mfg#:
034-601-1003-TD
In Stock
$46.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4 S-Line / S4 Grille Accent Set - Gloss Black

ES#3991472 - 028800ECS01 - Audi B9 A4 S-Line / S4 Grille Accent Set - Gloss Black - Upgrade your exterior styling - ECS - Audi

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

For S-Line models only. Fits up to 2019 model year with *pre-facelift* front bumpers

Brand:
ECS - Corporate Logo
ES#:
3991472
Mfg#:
028800ECS01
In Stock
ON SALE! SAVE 20%
$292.99

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

$234.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B5 S4/A4 Trunk Spoiler - Gloss Black

ES#4159609 - 007721LA01 - Audi B5 S4/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!

Brand:
ECS - Corporate Logo
ES#:
4159609
Mfg#:
007721LA01
In Stock
ON SALE! SAVE 20%
$223.99

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

$179.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Position Rear Differential Mount Insert Kit

ES#2992519 - 008288ECS01 - Front Position Rear Differential Mount Insert Kit - Decrease differential slop for better drivetrain response! - ECS - Audi Porsche

Decrease differential slop for better drivetrain response! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2992519
Mfg#:
008288ECS01
In Stock
ON SALE! SAVE 25%
$95.99

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

$71.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front & Rear Euro Ceramic Brake Pad Kit

ES#2763651 - 8K0698151Hkt2 - Front & Rear Euro Ceramic Brake Pad Kit - Ceramic composite developed to meet low dust & noise requirements, includes front and rear pads - Akebono - Audi
ECS Tuning recommends this product.

Ceramic composite developed to meet low dust & noise requirements, includes front and rear pads

Brand:
Akebono - Corporate Logo
ES#:
2763651
Mfg#:
8K0698151HKT2
In Stock
$235.99

This product was last offered at the strikethrough price on
06-10-2026

$177.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

H&R VTF Adjustable Lowering Springs

ES#3479162 - 23007-1 - H&R VTF Adjustable Lowering Springs - More lowering, more features, and more personalization! Average Lowering of 0.75 - 1.6" front & rear. - H&R - Audi

More lowering, more features, and more personalization! Average Lowering of 0.75 - 1.6" front & rear. 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! Fits both models with adaptive damping suspension and without - Lowering height will vary between suspension ty

Brand:
H&R - Corporate Logo
ES#:
3479162
Mfg#:
23007-1
Ships in 3 Business Days
$1150.00 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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