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Audi S4 Performance Parts & Upgrades

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ECS Tuning Ultimate Audi B8 Facelift Street Shield Kit

ES#3612455 - 003251ecs01KT1 - ECS Tuning Ultimate Audi B8 Facelift Street Shield Kit - Get the ultimate under body protection for your B8! - ECS - Audi

Get the ultimate under body protection for your B8! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits B8.5 chassis from the 2013 model year with manual and DSG transmissions only
Fits B8.5 chassis from the 2013 model year with manual and DSG transmissions only

Brand:
ECS - Corporate Logo
ES#:
3612455
Mfg#:
003251ECS01KT1
In Stock at Vendor
ON SALE! SAVE 10%
$1068.99

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

$962.04 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Engine Cover Kit - Audi 3.0T

ES#2999048 - 015339ECS01 - Carbon Fiber Engine Cover Kit - Audi 3.0T - Add a touch of carbon fiber to your stock engine cover! - ECS - Audi

Add a touch of carbon fiber to your stock engine cover! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2999048
Mfg#:
015339ECS01
Ships on Jun 25, 2026
Auto Notify
ON SALE! SAVE 10%
$398.99

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

$358.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JHM HD Overdrive Lightweight Supercharger Crank Pulley (187mm)

ES#4045868 - 06E105251F-187mm - JHM HD Overdrive Lightweight Supercharger Crank Pulley (187mm) - Eliminates the problematic two-piece design and rubber isolator found in the stock crank pulley while reducing the mass of the motor's rotating assembly. - JH Motorsports - Audi Volkswagen Porsche

Eliminates the problematic two-piece design and rubber isolator found in the stock crank pulley while reducing the mass of the motor's rotating assembly. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*To be used with 'Stage 2' software or software specific to a supercharger crank pulley upgrade*

Brand:
JH Motorsports - Corporate Logo
ES#:
4045868
Mfg#:
06E105251F-187MM
In Stock
$324.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stainless Steel Braided Line Kit

ES#4635698 - 034-303-0015 - Stainless Steel Braided Line Kit - Features telfon linings, stainless steel braided reinforcement, and a protective black PVC covering. - 034Motorsport - Audi

Features telfon linings, stainless steel braided reinforcement, and a protective black PVC covering. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4635698
Mfg#:
034-303-0015
In Stock
$195.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Short Throw Shifter

ES#2842154 - 004113ECS01A - Adjustable Short Throw Shifter - Find your perfect setting with 4 steps of throw reduction - ECS - Audi

Find your perfect setting with 4 steps of throw reduction affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2842154
Mfg#:
004113ECS01A
In Stock
ON SALE!
$461.99

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

$448.13 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

2.5" Performance Downpipe Set - Resonated

ES#3969400 - SAUP044 - 2.5" Performance Downpipe Set - Resonated - 2.50" 304 stainless performance downpipes with resonated sections - Scorpion - Audi

2.50" 304 stainless performance downpipes with resonated sections affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Scorpion - Corporate Logo
ES#:
3969400
Mfg#:
SAUP044
In Stock
$604.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Hi-Volume Fuel Pump Upgrade Kit

ES#3146299 - 10-127-101K - Hi-Volume Fuel Pump Upgrade Kit - Up to a 5% Torque increase and additional 10Bar of fuel rail pressure! - Autotech - Audi Volkswagen

Up to a 5% Torque increase and additional 10Bar of fuel rail pressure! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Autotech - Corporate Logo
ES#:
3146299
Mfg#:
10-127-101K
Ships on Jul 14, 2026
$339.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

X34 Cold Air Intake - Carbon Fiber

ES#2864558 - 034-108-1002-CF - X34 Cold Air Intake - Carbon Fiber - The ultimate cold air induction system the for powerful 2.7T! - 034Motorsport - Audi

The ultimate cold air induction system the for powerful 2.7T! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2864558
Mfg#:
034-108-1002-CF
In Stock
$618.00

This product was last offered at the strikethrough price on
12-11-2025

$595.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Throttle Booster

ES#4624165 - EM100050 - APR Throttle Booster - Wireless Controller with Blutooth Mobile connectivity - APR - Audi Volkswagen Porsche

Wireless Controller with Blutooth Mobile connectivity 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!

Brand:
APR - Corporate Logo
ES#:
4624165
Mfg#:
EM100050
In Stock
11% off MSRP

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

$316.95

This product was last offered at the strikethrough price on
03-13-2026

$280.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Jackal Motorsports Tune - Includes Jackal Tuning Cable & TCU Tune

ES#4907826 - B9-3.0T-1-TUNE - Jackal Motorsports Tune - Includes Jackal Tuning Cable & TCU Tune - Gains from 67 WHP/108 WTQ on Stage 1 up to 102 WHP/122 WTQ on Stage 2 - Jackal Motorsports - Audi

Gains from 67 WHP/108 WTQ on Stage 1 up to 102 WHP/122 WTQ on Stage 2 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Jackal Motorsports - Corporate Logo
ES#:
4907826
Mfg#:
B9-3.0T-1-TUNE
Ships in 1 Business Day
$1010.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo Sport Lower Control Arm Kit CTS Turbo

ES#4743108 - CTS-SUS-3006 - CTS Turbo Sport Lower Control Arm Kit CTS Turbo - Features sturdier durometer bushings, providing increased confidence and stability during cornering. - CTS - Audi

Features sturdier durometer bushings, providing increased confidence and stability during cornering. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits models from production date 11/3/2009 (M14 Ball Joints)

Brand:
CTS - Corporate Logo
ES#:
4743108
Mfg#:
CTS-SUS-3006
Ships in 7 Business Days
$479.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Diverter Valve - Black

ES#3183557 - 034-145-5000-BLK - Billet Diverter Valve - Black - High-performance spring and piston design is both durable and a performer! - 034Motorsport - Audi Volkswagen

High-performance spring and piston design is both durable and a performer! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2 required

Brand:
034Motorsport - Corporate Logo
ES#:
3183557
Mfg#:
034-145-5000-BLK
In Stock
$134.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Motor Mount Kit

ES#3183555 - 034-509-0008KT - Density Line Motor Mount Kit - Includes 034Motorsport Street Density mounts & active mount resistor bypasses - 034Motorsport - Audi

Includes 034Motorsport Street Density mounts & active mount resistor bypasses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3183555
Mfg#:
034-509-0008KT
In Stock
$294.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi 2.7T F21 Hybrid Turbochargers

ES#2840951 - f21bt - Audi 2.7T F21 Hybrid Turbochargers - Complete bolt on Turbo upgrade including turbo inlet pipes - FrankenTurbo - Audi

Complete bolt on Turbo upgrade including turbo inlet pipes affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
FrankenTurbo - Corporate Logo
ES#:
2840951
Mfg#:
F21BT
Ships on Jul 23, 2026
$1999.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front V5 Slotted Brake Rotors - Set (350x34)

ES#4668329 - 4M0615301AN-S - Front V5 Slotted Brake Rotors - Set (350x34) - Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. - ECS - Audi

Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4668329
Mfg#:
4M0615301AN-S
In Stock
ON SALE!
$485.99

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

$471.40 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 Carbon Fiber Rear Diffuser

ES#3247439 - 023797ECS01 - Audi B9 S4 Carbon Fiber Rear Diffuser - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits pre-facelift models (up to 2019) without integrated tips in the rear valance

Brand:
ECS - Corporate Logo
ES#:
3247439
Mfg#:
023797ECS01
In Stock
ON SALE! SAVE 34%
$1029.99

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

$679.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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