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Audi S4 Performance Parts & Upgrades

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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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary 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 15%
$176.39

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

$149.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2224448 - FMDV008 - 008 Premium Diverter Valve - Anodized Black - Smaller, tougher and tuneable - Forge - Audi Volkswagen Porsche

Smaller, tougher and tuneable affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
2224448
Mfg#:
FMDV008
In Stock
$264.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2619512 - 25310075 - H.A.S. - Adjustable Coilover Spring System - Retains the use of your factory shocks while providing the ability to adjust ride ride height from 0.6" to 1.8" Front 0.6" to 1.6" Rear - KW Suspension - Audi

Retains the use of your factory shocks while providing the ability to adjust ride ride height from 0.6" to 1.8" Front 0.6" to 1.6" Rear affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
KW Suspension - Corporate Logo
ES#:
2619512
Mfg#:
25310075
Ships on Jul 2, 2026
$1144.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2748198 - ECS10159KTWBC1 - ECS Wheel Spacer & Bolt Kit - 20mm 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#:
2748198
Mfg#:
ECS10159KTWBC1
In Stock
ON SALE! SAVE 10%
$172.99

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

$155.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3569343 - 200001006KT - Upgraded Intercooler Kit - Bigger intercoolers with carbon air ducts - Wagner Tuning - Audi

Bigger intercoolers with carbon air ducts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Wagner Tuning - Corporate Logo
ES#:
3569343
Mfg#:
200001006KT
In Stock
$1140.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3178069 - 034-601-0011 - Billet Rear Subframe Bushing Kit - Maintain proper suspension geometry when cornering and reduce rear subframe movement - 034Motorsport - Audi

Maintain proper suspension geometry when cornering and reduce rear subframe movement affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3178069
Mfg#:
034-601-0011
Ships in 3 Business Days
$285.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

Brand:
Wagner Tuning - Corporate Logo
ES#:
4489117
Mfg#:
200001120.PIPE.E
Ships in 6 Business Days
$1140.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4042999 - EMDSPACER20665B - EMD Auto 20mm Wheel Spacers - Pair (With Bolts) - Manufactured out of high quality 6061-T6 aluminum, and black anodized for corrosion resistance - 5x112, 66.5 Center Bore - Emmanuele Design - Audi

Manufactured out of high quality 6061-T6 aluminum, and black anodized for corrosion resistance - 5x112, 66.5 Center Bore affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Emmanuele Design - Corporate Logo
ES#:
4042999
Mfg#:
EMDSPACER20665B
In Stock
$110.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4701691 - WAS-501 - Lightweight Tubular Rear Subframe - Increases chassis rigidity for improved handling performance and eliminates subframe shifting - Verkline - Audi

Increases chassis rigidity for improved handling performance and eliminates subframe shifting affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Verkline - Corporate Logo
ES#:
4701691
Mfg#:
WAS-501
Ships on Jun 25, 2026
$1699.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2092331 - 35210035 - KW V3 Series Coilover Kit - The ultimate in coilover technology featuring double adjustable dampening - KW Suspension - Audi

The ultimate in coilover technology featuring double adjustable dampening affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits sedan models only. Range of lowering is 0.4-1.5" in the front and rear.

Brand:
KW Suspension - Corporate Logo
ES#:
2092331
Mfg#:
35210035
Back Ordered
$3394.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2092349 - 35210065 - V3 Series Coilover Kit  - The ultimate in coilover technology featuring double adjustable dampening - KW Suspension - Audi

The ultimate in coilover technology featuring double adjustable dampening affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits cabriolet and avant models only.
For avant and convertible models only. Range of lowering is 0.4-1.5" in the front and rear.

Brand:
KW Suspension - Corporate Logo
ES#:
2092349
Mfg#:
35210065
Back Ordered
$3394.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

For Manual Transmissions - Comes with cats and 2.5" cat back affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JH Motorsports  - Corporate Logo
ES#:
5376133
Mfg#:
JHM-B6S-LTHM
Ships on Jun 25, 2026
$3386.99 USD
Free Shipping
on orders $49 and up
ES#3420821 - SSXAU673 - 2.5" High-Flow Downpipe  - Featuring Milltek Sport Hi-Flow sports cat, fits with OE and Milltek cat-back systems. - Milltek Sport - Audi

Featuring Milltek Sport Hi-Flow sports cat, fits with OE and Milltek cat-back systems. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
3420821
Mfg#:
SSXAU673
Ships in 4 Business Days
$3374.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4381925 - 034-603-0030 - X-Clear Driveshaft Tunnel Brace  - Allows for a larger diameter exhaust to be installed without causing excessive rattling or vibration. - 034Motorsport - Audi

Allows for a larger diameter exhaust to be installed without causing excessive rattling or vibration. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4381925
Mfg#:
034-603-0030
In Stock
$140.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3701664 - 140-14591 - Combination Parking Brake Caliper Rear Brake Kit  - Features 12.19" slotted rotors & black calipers - Provides balanced brake performance and style to compliment front big brake kits! - Wilwood - Audi

Features 12.19" slotted rotors & black calipers - Provides balanced brake performance and style to compliment front big brake kits! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Wilwood - Corporate Logo
ES#:
3701664
Mfg#:
140-14591
Ships on Jun 25, 2026
$1114.99 USD

The Revo Big Brake Kit comes complete with everything required to upgrade your stopping power. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
REVO - Corporate Logo
ES#:
4499824
Mfg#:
RA841B200200
Back Ordered
$3339.00 USD
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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