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Audi S4 Performance Parts & Upgrades

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Wheel Spacer & Bolt Kit - 20mm With Black Conical Seat Bolts

ES#2748292 - 6-ECS-024 - Wheel Spacer & Bolt Kit - 20mm With Black Conical Seat Bolts - Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels - ECS - Audi

Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748292
Mfg#:
6-ECS-024
In Stock
ON SALE! SAVE 15%
$183.59

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

$156.05 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Transmission Street Shield Skid Plate Kit - Audi B8

ES#3411961 - 017881ecs01KT - ECS Tuning Transmission Street Shield Skid Plate Kit - Audi B8 - Protect your vehicle's transmission pan with a 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's transmission pan with a 4mm thick aluminum skid plate affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3411961
Mfg#:
017881ECS01KT
In Stock
ON SALE! SAVE 20%
$495.44

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

$397.36 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

KOMPACT EM BOV VR18 Dual Port

ES#4745463 - TS-0223-1079 - KOMPACT EM BOV VR18 Dual Port - Seamlessly install a Kompact EM Valve without the need for adaptors, hoses, or additional assembly. - TurboSmart - Audi

Seamlessly install a Kompact EM Valve without the need for adaptors, hoses, or additional assembly. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
TurboSmart - Corporate Logo
ES#:
4745463
Mfg#:
TS-0223-1079
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.

$350.99

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

$315.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RS4 K04 Turbocharger - Right

ES#4140513 - 53049880026 - RS4 K04 Turbocharger - Right - Does not include hardware - BorgWarner - Audi

Does not include hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Does NOT include hardware or the RS4/modified intake pipes necessary for a complete install - For a bolt-on solution, please see 034Motorsport's inlet pipe kit 034-145-P002 (ES2864575).

Brand:
BorgWarner - Corporate Logo
ES#:
4140513
Mfg#:
53049880026
Ships in 1 Business Day
$1541.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B8 Audi S4/S5/SQ5/Q5 3.0T Dynamic+ Performance Software Package

ES#4877145 - 034B8/8.5TUNE - B8 Audi S4/S5/SQ5/Q5 3.0T Dynamic+ Performance Software Package - Unleash up to 540HP/491TQ by transforming your Audi EA837 3.0T with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! - 034Motorsport - Audi

Unleash up to 540HP/491TQ by transforming your Audi EA837 3.0T with Dynamic+ Tuning - delivering ultimate power, drivability, reliability, and enhanced features! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4877145
Mfg#:
034B8/8.5TUNE
EO#:
D-850
Ships in 1 Business Day
Starting at $180.00 USD
Customize
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Density Line Front Sway Bar End Links - Pair

ES#4841517 - 034-402-4039 - Density Line Front Sway Bar End Links - Pair - Replace your flimsy, imprecise OEM sway bar end links with these performance-engineered units! - 034Motorsport - Audi Porsche

Replace your flimsy, imprecise OEM sway bar end links with these performance-engineered units! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4841517
Mfg#:
034-402-4039
In Stock
$112.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Luft-Technik B9 S4 Front Mount Intercooler

ES#3537699 - 019219ecs01aKT - Luft-Technik B9 S4 Front Mount Intercooler - Reduce restrictions and increase cooling! - ECS - Audi

Reduce restrictions and increase cooling! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For Pre-Facelift Models Only up to 11/08/2021

Brand:
ECS - Corporate Logo
ES#:
3537699
Mfg#:
019219ECS01AKT
Ships on Sep 23, 2026
Auto Notify
ON SALE! SAVE 18%
$727.99

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

$594.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Dynamic+ Billet Adjustable Front Sway Bar End Links

ES#4381944 - 034-402-4033 - Dynamic+ Billet Adjustable Front Sway Bar End Links - Replace your flimsy, imprecise OEM sway bar end links with these performance engineered Dynamic+ Billet Adjustable Front Sway Bar End Links from 034Motorsport - 034Motorsport - Audi

Replace your flimsy, imprecise OEM sway bar end links with these performance engineered Dynamic+ Billet Adjustable Front Sway Bar End Links from 034Motorsport affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4381944
Mfg#:
034-402-4033
In Stock
$168.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ohlins 17-20 Audi A4/A5/S4/S5/RS4/RS5 (B9) Road & Track Coilover System

ES#4715964 - AUSMU00S1 - Ohlins 17-20 Audi A4/A5/S4/S5/RS4/RS5 (B9) Road & Track Coilover System - Get top of the line performance and comfort from one of the biggest names in suspension systems, Ohlins. Features 30-Level dampening adjustment and DFV technology - Ohlins - Audi

Get top of the line performance and comfort from one of the biggest names in suspension systems, Ohlins. Features 30-Level dampening adjustment and DFV technology affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Ohlins - Corporate Logo
ES#:
4715964
Mfg#:
AUSMU00S1
In Stock at Vendor
$3300.00 USD

Stage 2 Dynamic+ Braking Package - Audi B9/B9.5 S4/S5/SQ5

ES#4905873 - 034-301-0009-DSO - Stage 2 Dynamic+ Braking Package - Audi B9/B9.5 S4/S5/SQ5 - The new standard for braking performance upgrades on your Audi B9/B9.5 S4/S5/SQ5 - 034Motorsport - Audi

The new standard for braking performance upgrades on your Audi B9/B9.5 S4/S5/SQ5 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4905873
Mfg#:
034-301-0009-DSO
Back Ordered
$2728.00 USD
Free Shipping

Dynamic+ Sway Bar Kit

ES#3468733 - 034-402-1012 - Dynamic+ Sway Bar Kit - Features perfectly matched front & rear sway bars to further reduce body roll and enhance steering feel - 034Motorsport - Audi

Features perfectly matched front & rear sway bars to further reduce body roll and enhance steering feel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3468733
Mfg#:
034-402-1012
In Stock
$711.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Street Density Transmission Mount

ES#3199888 - 0345094025 - Street Density Transmission Mount - Improve the performance of the factory transmission mount - 034Motorsport - Audi

Improve the performance of the factory transmission mount affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3199888
Mfg#:
0345094025
In Stock
$44.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VPS Pre Muffler Delete Kit

ES#4414474 - B9PMD2017 - VPS Pre Muffler Delete Kit - Unleash the sound your 3.0T was meant to have! - Verstarkt Performance Systems - Audi

Unleash the sound your 3.0T was meant to have! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Verstarkt Performance Systems - Corporate Logo
ES#:
4414474
Mfg#:
B9PMD2017
In Stock
$269.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 15mm With Black Conical Seat Bolts

ES#2748287 - 002411ECS03AKT1 - Wheel Spacer & Bolt Kit - 15mm With Black Conical Seat Bolts - Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels - ECS - Audi

Complete kit for two wheels, comes with everything you need to install spacers on your aftermarket wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748287
Mfg#:
002411ECS03AKT1
Ships on Jul 9, 2026
Auto Notify
ON SALE! SAVE 30%
$164.99

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

$115.28 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

AWE ColdFront Intercooler - Audi B9 S4/S5 3.0T

ES#4044047 - 4510-11060 - AWE ColdFront Intercooler - Audi B9 S4/S5 3.0T - Offers a 130% increase in frontal surface area and a massive 83% increase in volume over the factory B9 intercooler - AWE - Audi

Offers a 130% increase in frontal surface area and a massive 83% increase in volume over the factory B9 intercooler affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AWE - Corporate Logo
ES#:
4044047
Mfg#:
4510-11060
Ships in 7 Business Days
$945.00 USD
This product is lifetime replacement eligible Lifetime Replacement

JB4 Bluetooth Wireless Connect Kit - Pinned Power Wire

ES#3514868 - JB4-SPWCK-F - JB4 Bluetooth Wireless Connect Kit - Pinned Power Wire - Wirelessly connect your JB4 to your phone! - Burger Motorsports - Audi BMW Volkswagen Mercedes Benz

Wirelessly connect your JB4 to your phone! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For JB4 systems produced 2017 and later. Please check board diagrams to properly identify your JB4 before ordering.
For use with JB4 only

Brand:
Burger Motorsports - Corporate Logo
ES#:
3514868
Mfg#:
JB4-SPWCK-F
In Stock
$159.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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