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Audi A4 Performance Parts & Upgrades

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ES#2167462 - 002411ECS03A20KT - ECS Wheel Spacers - 20mm (Pair) - Add some style with these wheel spacers - ECS - Audi BMW Porsche

Add some style with these wheel spacers 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2167462
Mfg#:
002411ECS03A20KT
In Stock
ON SALE! SAVE 15%
$140.99

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

$119.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4488077 - 021275ECS01 - Audi B9 A4 2.0T Valved Exhaust System - Cat Back  - Max gains of +16 WHP and +17 WTQ on our B9 A4 equipped with a Luft-Technik intake, ECS Intercooler/charge pipes, and a stage 1 tune! - ECS - Audi

Max gains of +16 WHP and +17 WTQ on our B9 A4 equipped with a Luft-Technik intake, ECS Intercooler/charge pipes, and a stage 1 tune! 10X Entries Into Our F80 M3 Sweepstakes
For vehicles up through the 2018 model year only (Pre-Facelift)

Brand:
ECS - Corporate Logo
ES#:
4488077
Mfg#:
021275ECS01
Ships on Dec 29, 2026
ON SALE!
Starting at $1152.07 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3647521 - ST-AEVI-1103KT - Supertech Inconel Exhaust 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 Into Our F80 M3 Sweepstakes
*Existing factory triple-groove valve keepers are to be reused*

Brand:
Assembled By ECS - Corporate Logo
ES#:
3647521
Mfg#:
ST-AEVI-1103KT
Ships in 4 Business Days
$382.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2603075 - 002411ECS02AKT3 -  Wheel Spacer & Bolt Kit - 12.5mm 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 Into Our F80 M3 Sweepstakes
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2603075
Mfg#:
002411ECS02AKT3
In Stock
ON SALE! SAVE 30%
$167.99

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

$117.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2718769 - 004329ECS01A -  Performance Snub Mount - Reduce driveline lash with a full polyurethane mount - ECS - Audi

Reduce driveline lash with a full polyurethane mount 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2718769
Mfg#:
004329ECS01A
In Stock
ON SALE! SAVE 30%
$76.99

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

$53.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#5457149 - IETPCK7 - High-Flow Charge Pipe Kit - Flow without limits: The ultimate bolt-on upgrade for Audi B9 power, sound, and reliability. - Integrated Engineering - Audi

Flow without limits: The ultimate bolt-on upgrade for Audi B9 power, sound, and reliability.

Brand:
Integrated Engineering - Corporate Logo
ES#:
5457149
Mfg#:
IETPCK7
In Stock
$379.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5457158 - IESSCK2 - IE Lowering Springs - Performance without the punishment: get a connected, aggressive stance while maintaining the ride comfort of your factory dampers. - Integrated Engineering - Audi

Performance without the punishment: get a connected, aggressive stance while maintaining the ride comfort of your factory dampers.

Brand:
Integrated Engineering - Corporate Logo
ES#:
5457158
Mfg#:
IESSCK2
In Stock
$324.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2177173 - 6-ECS-024 -  Wheel Spacer & Bolt Kit - 20mm With Ball Seat Bolts - Add some style to your Audi with these wheel spacers - ECS - Audi

Add some style to your Audi with these wheel spacers 10X Entries Into Our F80 M3 Sweepstakes
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2177173
Mfg#:
6-ECS-024
In Stock
ON SALE! SAVE 10%
$179.99

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

$161.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2784492 - 551201 - Harmonic Damper Crankshaft Pulley - Internally balanced harmonic damper - Fluidampr - Audi Volkswagen

Internally balanced harmonic damper

Brand:
Fluidampr - Corporate Logo
ES#:
2784492
Mfg#:
551201
In Stock at Vendor
15% off MSRP

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

$590.99

This product was last offered at the strikethrough price on
11-05-2026

$501.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2951399 - 034-603-0008 - X-Brace Billet Aluminum Chassis Reinforcement - Increase torsional rigidity for improved steering feel and handling performance - 034Motorsport - Audi

Increase torsional rigidity for improved steering feel and handling performance 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2951399
Mfg#:
034-603-0008
Ships in 2 Business Days
$752.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4731979 - DO0RBUSTER8KT - Audi B8 S4 Pre-facelift Rear Diffuser & Trunk Spoiler - Add some aggressive styling to your Audi! - Doorbusters - Audi

Add some aggressive styling to your Audi! Fits pre-facelift B8 S-Line models with quad tips only

Brand:
Doorbusters - Corporate Logo
ES#:
4731979
Mfg#:
DO0RBUSTER8KT
In Stock
$748.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2748995 - FMFSITATBL - Blow-Off Valve - Black - Stop boost leaking from your diverter valve once and for all! - Forge - Audi Volkswagen

Stop boost leaking from your diverter valve once and for all!

Brand:
Forge - Corporate Logo
ES#:
2748995
Mfg#:
FMFSITATBL
In Stock
$373.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4266266 - 18-309-180WK - Wavetrac Rear Differential  - Upgrade your vehicles differential! - Wavetrac - Audi

Upgrade your vehicles differential!

Brand:
Wavetrac - Corporate Logo
ES#:
4266266
Mfg#:
18-309-180WK
Ships in 2 Business Days
$1495.00 USD
Free Shipping
on orders $49 and up
ES#3979038 - 02390-HDCL-SK - Clutch Masters FX400 Clutch Kit & Single Mass Flywheel - Features a Heavy duty pressure plate, Full-face ceramic lined sprung clutch disc, and a Steel Single Mass Flywheel - Clutch Masters - Audi

Features a Heavy duty pressure plate, Full-face ceramic lined sprung clutch disc, and a Steel Single Mass Flywheel

Brand:
Clutch Masters - Corporate Logo
ES#:
3979038
Mfg#:
02390-HDCL-SK
Ships in 7 Business Days
$2237.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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