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Audi A4 Performance Parts & Upgrades

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18" Wheel Spacer Flush Fit Kit - Black Bolts

ES#3106636 - 019204ECS01KT2 - 18" Wheel Spacer Flush Fit Kit - Black Bolts - Includes spacers & Black bolts to obtain a flush look on your OE 18" wheels - ECS - Audi

Includes spacers & Black bolts to obtain a flush look on your OE 18" wheels 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3106636
Mfg#:
019204ECS01KT2
Ships in 1-2 days
ON SALE! SAVE 10%
$259.99

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

$233.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

front HPS 5.0 Performance Brake Pad Set

ES#2748638 - HB641B.696 - front HPS 5.0 Performance Brake Pad Set - Next generation high performance street brake pad offering greater stopping power and pedal feel, with very low dust and noise - Hawk - Audi

Next generation high performance street brake pad offering greater stopping power and pedal feel, with very low dust and noise

Brand:
Hawk - Corporate Logo
ES#:
2748638
Mfg#:
HB641B.696
In Stock
$206.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/A5 ECU Cover - Matte Black

ES#3739793 - 028799ECS01 - Audi B9 A4/A5 ECU Cover - Matte Black - Compliment your engine bay and hide away the exposed ECU - ECS - Audi

Compliment your engine bay and hide away the exposed ECU 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3739793
Mfg#:
028799ECS01
In Stock
ON SALE! SAVE 25%
$103.99

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

$77.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RA4 Conversion Clutch Kit - Stage 2

ES#2792697 - 002948ECS01KT3 - RA4 Conversion Clutch Kit - Stage 2 - ECS RA4 Lightweight Flywheel with the Spec Stage II clutch kit rated at 498ft/lbs - ECS - Audi

ECS RA4 Lightweight Flywheel with the Spec Stage II clutch kit rated at 498ft/lbs 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2792697
Mfg#:
002948ECS01KT3
Ships in 5 Business Days
ON SALE!
$1838.99

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

$1783.82 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DRA Series Trak Spacers - 25mm (1 Pair) Black

ES#2731115 - 50556651SW - DRA Series Trak Spacers - 25mm (1 Pair) Black - Get that stance that you've been craving with these new spacers - H&R - Audi Mercedes Benz Porsche

Get that stance that you've been craving with these new spacers 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
2731115
Mfg#:
50556651SW
In Stock
10% off MSRP

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

$189.99

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

$170.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Baffled Oil Catch Can System

ES#3194688 - 019205ecs01KT - Performance Baffled Oil Catch Can System - 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#:
3194688
Mfg#:
019205ECS01KT
In Stock
ON SALE!
$616.99

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

$586.14 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Conical Seat Stud Conversion Kit

ES#2804053 - 001467ECS01KT2 - Conical Seat Stud Conversion Kit - Make wheel changes faster and easier - ECS - Audi Volkswagen

Make wheel changes faster and easier 10X Entries For Our 25th Anniversary Sweepstakes!
For use with conical seat wheels and up to 20mm spacers only

Brand:
ECS - Corporate Logo
ES#:
2804053
Mfg#:
001467ECS01KT2
Back Ordered
Auto Notify
ON SALE! SAVE 10%
$201.99

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

$181.79 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

ECS Performance Ignition Coil - Priced Each

ES#4846108 - 056059LA08 - ECS Performance Ignition Coil - Priced Each - Increased energy output over OE coils for a stronger, more consistent spark! - ECS - Audi Volkswagen

Increased energy output over OE coils for a stronger, more consistent spark! 10X Entries For Our 25th Anniversary Sweepstakes!
For Vehicles with Engine Codes ATW and AEB (Bolt-In Style Ignition Coils)

Brand:
ECS - Corporate Logo
ES#:
4846108
Mfg#:
056059LA08
In Stock
ON SALE! SAVE 15%
$35.99

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

$30.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High Performance Main Bearing Set - Standard

ES#4879763 - 5M5563HX-STD - High Performance Main Bearing Set - Standard - Includes upper and lower bearing shells for a complete main bearing replacement. .001 Oil Clearance. - ACL - Audi Volkswagen

Includes upper and lower bearing shells for a complete main bearing replacement. .001 Oil Clearance.

Brand:
ACL - Corporate Logo
ES#:
4879763
Mfg#:
5M5563HX-STD
In Stock
$149.99

This product was last offered at the strikethrough price on
04-09-2026

$121.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 / A4 S-Line Rear Bumper Side Splitters - Gloss Black

ES#4164511 - 004751la01 - Audi B9 S4 / A4 S-Line Rear Bumper Side Splitters - Gloss Black - Spice up the exterior of your Audi with gloss black spats! - ECS - Audi

Spice up the exterior of your Audi with gloss black spats! 10X Entries For Our 25th Anniversary Sweepstakes!

Fits pre-facelift S-Line models up to 2019 model year only

Brand:
ECS - Corporate Logo
ES#:
4164511
Mfg#:
004751LA01
Ships on Sep 8, 2026
Auto Notify
ON SALE! SAVE 25%
$133.99

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

$100.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Upper Control Arm Kit

ES#3184738 - 034-401-1003 - Density Line Upper Control Arm Kit - Refresh your front end with 034Motorsport's front upper control arm kit - 034Motorsport - Audi

Refresh your front end with 034Motorsport's front upper control arm kit

Brand:
034Motorsport - Corporate Logo
ES#:
3184738
Mfg#:
034-401-1003
In Stock
$193.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Camber Correcting Density Line Control Arm Kit - Front

Includes lower control arms, upper adjustable control arms, M14 ball joints and all necessary hardware. For vehicles with M14 ball joints

Brand:
034Motorsport - Corporate Logo
ES#:
4159575
Mfg#:
034-401-1054
Back Ordered
$1276.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#2827420 - SSXAU296 - Cat-Back Exhaust System - Resonated - 2.25" stainless steel with dual 100mm 'GT100' style polished exhaust tips - Milltek Sport - Audi

2.25" stainless steel with dual 100mm 'GT100' style polished exhaust tips

Brand:
Milltek Sport - Corporate Logo
ES#:
2827420
Mfg#:
SSXAU296
Ships on Aug 26, 2026
$1685.99 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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