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Audi S4 Performance Parts & Upgrades

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Density Line Lower Control Arm Kit

ES#3183552 - 034-401-1021KT - Density Line Lower Control Arm Kit - Includes 034Motorsport Density line lower control arms & necessary hardware - Assembled By ECS - Audi

Includes 034Motorsport Density line lower control arms & necessary hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3183552
Mfg#:
034-401-1021KT
Ships in 1-2 days
$525.64

This product was last offered at the strikethrough price on
05-04-2026

$521.88 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EMD Wheel Spacers - 5mm (Pair)

ES#4430353 - EMD-SPACER-5-571 - EMD Wheel Spacers - 5mm (Pair) - Exclusively built for your 57.1mm centerbore VW/Audi - Emmanuele Design - Audi Volkswagen

Exclusively built for your 57.1mm centerbore VW/Audi affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Emmanuele Design - Corporate Logo
ES#:
4430353
Mfg#:
EMD-SPACER-5-571
In Stock
$40.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Competition Intercooler Kit

The high performance intercooler core provides a 134% larger frontal area and 105% more volume compared to the stock mounted intercooler. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
**This kit is for European vehicle fitment**

Brand:
Wagner Tuning - Corporate Logo
ES#:
4489118
Mfg#:
200001120.KITSIN
Ships in 1 Business Day
$1040.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Rear Special Active Shock Absorber Kit

ES#4430378 - 80451265KT - Rear Special Active Shock Absorber Kit - Superior handling without compromising ride quality - Koni - Audi

Superior handling without compromising ride quality affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vehicles equipped with Electronic Damping Control (EDC) will lose factory shock damping and receive a system error code

Brand:
Koni - Corporate Logo
ES#:
4430378
Mfg#:
80451265KT
In Stock
ON SALE! SAVE 20%
$322.99

This product was last offered at the strikethrough price on
02-27-2026

$257.25 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Seibon OE-Style Carbon Fiber Hood

ES#3010195 - HD9601AUA4OE - Seibon OE-Style Carbon Fiber Hood - Add style and remove weight from the front end of your Audi! - Seibon - Audi

Add style and remove weight from the front end of your Audi! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Seibon - Corporate Logo
ES#:
3010195
Mfg#:
HD9601AUA4OE
Special Order: No Guaranteed ETA
$1028.99 USD
This product is lifetime replacement eligible Lifetime Replacement

12.5mm Wheel Spacers - Black (Pair)

ES#3476431 - 021460TMS03-02 - 12.5mm Wheel Spacers - Black (Pair) - Lightweight wheel spacers with a machined tab for easy removal - Turner Motorsport - Audi BMW MINI Porsche

Lightweight wheel spacers with a machined tab for easy removal affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
3476431
Mfg#:
021460TMS03-02
Ships on Sep 24, 2026
Auto Notify
ON SALE! SAVE 53%
$243.99

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

$113.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Valve Spring/Retainer Kit

ES#2794233 - IEVTVD2 - Performance Valve Spring/Retainer Kit - High quality precision wound/exact tolerance performance valves and titanium retainers - Integrated Engineering - Audi

High quality precision wound/exact tolerance performance valves and titanium retainers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794233
Mfg#:
IEVTVD2
Back Ordered
$1023.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear EP24 "Enthusiast Performance" Brake Pad Set

ES#4739103 - EP24-340 - Rear EP24 "Enthusiast Performance" Brake Pad Set - This enthusiast-developed high-performance street and light track pad offers an ideal solution for the spirited commuter and weekend autocross driver alike. - ECS - Audi Volkswagen

This enthusiast-developed high-performance street and light track pad offers an ideal solution for the spirited commuter and weekend autocross driver alike. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4739103
Mfg#:
EP24-340
In Stock
ON SALE! SAVE 62%
$116.99

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

$44.48 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

DRA Series Wheel Spacers - 25mm (Pair)

ES#1306735 - 5055571 - DRA Series Wheel Spacers - 25mm (Pair) - Fine tune your stance and improve handling - H&R - Audi Volkswagen

Fine tune your stance and improve handling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
1306735
Mfg#:
5055571
Ships in 3 Business Days
$169.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Supercharger Plate - Red Milled

ES#4620245 - 06E103927K-RDM - Billet Supercharger Plate - Red Milled - Upgrade the looks of the factory supercharger or replace your broken factory cover. - JH Motorsports - Audi

Upgrade the looks of the factory supercharger or replace your broken factory cover. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JH Motorsports - Corporate Logo
ES#:
4620245
Mfg#:
06E103927K-RDM
Ships in 1 Business Day
$169.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Complete Stage 2 Carbon Fiber Cold Air Intake Kit

ES#2193026 - CI100023 - Complete Stage 2 Carbon Fiber Cold Air Intake Kit - Includes the carbon fiber cold are intake with the stage 2 back pipe - APR - Audi

Includes the carbon fiber cold are intake with the stage 2 back pipe Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
CARB certified for sale in all 50 states

Brand:
APR - Corporate Logo
ES#:
2193026
Mfg#:
CI100023
EO#:
d-783-2
Back Ordered
$1016.90 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Unitronic Performance Software - Stage 1 - With UniCONNECT+ Cable

ES#4376316 - 30T-EA839-1-UC - Unitronic Performance Software - Stage 1 - With UniCONNECT+ Cable - Gain up to 69 horsepower and 97 lb-ft of torque on 91 Octane - Unitronic - Audi

Gain up to 69 horsepower and 97 lb-ft of torque on 91 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Unitronic - Corporate Logo
ES#:
4376316
Mfg#:
30T-EA839-1-UC
In Stock
$1014.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer & Bolt Kit - 17.5mm With Black Conical Seat Bolts

ES#2748196 - ECS10158KTWBC1 - ECS Wheel Spacer & Bolt Kit - 17.5mm 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that require conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748196
Mfg#:
ECS10158KTWBC1
In Stock
ON SALE! SAVE 25%
$192.99

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

$144.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8 A4/S4 Race Tow Strap - Red

ES#3569430 - 023419ECS01-05 - B8 A4/S4 Race Tow Strap - Red - Look great on the track or street! - ECS - Audi

Look great on the track or street! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3569430
Mfg#:
023419ECS01-05
In Stock
ON SALE!
$115.99

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

$112.51 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sport Springs - Set

ES#2016 - 29257 - Sport Springs - Set - Unrivaled comfort and performance. Average lowering of 1.2"F 1.2"R - H&R - Audi

Unrivaled comfort and performance. Average lowering of 1.2"F 1.2"R affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Fits Avant models only

Brand:
H&R - Corporate Logo
ES#:
2016
Mfg#:
29257
Ships in 3 Business Days
$252.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport Springs - Set

ES#2713629 - 50377 - Sport Springs - Set - Unrivaled comfort and performance. Average lowering of 1.4"F 1.3"R - H&R - Audi

Unrivaled comfort and performance. Average lowering of 1.4"F 1.3"R affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Fits Sedan models only

Brand:
H&R - Corporate Logo
ES#:
2713629
Mfg#:
50377
Ships in 3 Business Days
$252.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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