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Audi S4 Performance Parts & Upgrades

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BR Series Coilover Suspension Kit - Extreme Low

ES#3675603 - S-07E-BR - BR Series Coilover Suspension Kit - Extreme Low - Featuring 30 levels of adjustment and performance spring rates and valving - BC Racing - Audi

Featuring 30 levels of adjustment and performance spring rates and valving affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
BC Racing - Corporate Logo
ES#:
3675603
Mfg#:
S-07E-BR
Ships on Aug 4, 2026
$1345.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BR Series Coilover Suspension Kit - Extreme Low

ES#4424821 - S-27E-BR - BR Series Coilover Suspension Kit - Extreme Low - Featuring 30 levels of adjustment and performance spring rates and valving - BC Racing - Audi

Featuring 30 levels of adjustment and performance spring rates and valving affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date up to 7/11/2016 with 53mm front strut body without factory Electronic Damping Control.

Brand:
BC Racing - Corporate Logo
ES#:
4424821
Mfg#:
S-27E-BR
Ships on Aug 4, 2026
$1345.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 10mm With Conical Seat Bolts

ES#3568762 - 002411ecs02aKT8 - Wheel Spacer & Bolt Kit - 10mm With 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#:
3568762
Mfg#:
002411ECS02AKT8
In Stock
$160.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

ES#2748289 - 6-ECS-023 - Wheel Spacer & Bolt Kit - 17.5mm 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#:
2748289
Mfg#:
6-ECS-023
In Stock
$173.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Mishimoto Oil Catch Can Kit

ES#4141537 - MMBCCS418PBE - Mishimoto Oil Catch Can Kit - Give the 3.0T TFSI powering your 2018+ Audi S4 or S5 the extra layer of defense that it needs - Mishimoto - Audi

Give the 3.0T TFSI powering your 2018+ Audi S4 or S5 the extra layer of defense that it needs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
4141537
Mfg#:
MMBCCS418PBE
In Stock at Vendor
$445.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear USR Series Sport Slotted Rotors - Pair (330x22)

ES#2621352 - USR1846 - Rear USR Series Sport Slotted Rotors - Pair (330x22) - Upgrade to a Turbo slotted rotor for improved braking - EBC - Audi

Upgrade to a Turbo slotted rotor for improved braking affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
EBC - Corporate Logo
ES#:
2621352
Mfg#:
USR1846
Ships on Jul 6, 2026
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5% off MSRP

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

$396.99

This product was last offered at the strikethrough price on
06-12-2026

$376.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Downpipe For B9 S4/S5

ES#4852347 - UH044-EXA - Performance Downpipe For B9 S4/S5 - Reduce turbo lag and enhance the exhaust note - Unitronic - Audi

Reduce turbo lag and enhance the exhaust note affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Unitronic - Corporate Logo
ES#:
4852347
Mfg#:
UH044-EXA
Ships in 5 Business Days
$2634.99 USD
Free Shipping
on orders $49 and up

Engine Street Shield Skid Plate Hardware Kit

ES#3493177 - 003251ECS02KT - Engine Street Shield Skid Plate Hardware Kit - Replacement hardware kit for your ECS Engine Street Shield - ECS - Audi

Replacement hardware kit for your ECS Engine Street Shield affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3493177
Mfg#:
003251ECS02KT
In Stock
$140.53 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Street Performance Coilover Kit

ES#646 - 29471-2 - Street Performance Coilover Kit - Unrivaled comfort and performance. Average lowering of 1.6"-2.5"F 1.3"-2.0"R - H&R - Audi

Unrivaled comfort and performance. Average lowering of 1.6"-2.5"F 1.3"-2.0"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#:
646
Mfg#:
29471-2
Ships in 3 Business Days
$1310.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Lightweight Aluminum Flywheel (23lbs)

ES#2830906 - FW060AL - Lightweight Aluminum Flywheel (23lbs) - Unleash hidden power by reducing rotating mass - Clutch Masters - Audi

Unleash hidden power by reducing rotating mass affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Clutch Masters - Corporate Logo
ES#:
2830906
Mfg#:
FW060AL
Ships in 7 Business Days
15% off MSRP

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

$1534.99

This product was last offered at the strikethrough price on
06-12-2026

$1304.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front EP24 "Enthusiast Performance" Brake Pad Set (With Sensor)

ES#4739071 - EP24-1322 - Front EP24 "Enthusiast Performance" Brake Pad Set (With Sensor) - 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

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#:
4739071
Mfg#:
EP24-1322
In Stock
$184.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front EP24 "Enthusiast Performance" Brake Pad Set

ES#4739118 - EP24-977 - Front 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 Porsche

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!

For use with the Stage 4 Big Brake Kit

Brand:
ECS - Corporate Logo
ES#:
4739118
Mfg#:
EP24-977
In Stock
$184.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Silicone Turbo Inlet Hose - Audi B9 S4/S5

ES#3420204 - 024360ECS01 - Silicone Turbo Inlet Hose - Audi B9 S4/S5 - Flexible silicone smooths the intake tract & hinders collapsing. The ultimate in durability! - ECS - Audi

Flexible silicone smooths the intake tract & hinders collapsing. The ultimate in durability! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3420204
Mfg#:
024360ECS01
In Stock
$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Premium Ceramic OE Equivalent Pad - Front

ES#4159089 - 8W0698151N - Premium Ceramic OE Equivalent Pad - Front - Brembo NAO Ceramic pads are designed to deliver improved comfort and reduced pad wear - Brembo - Audi

Brembo NAO Ceramic pads are designed to deliver improved comfort and reduced pad wear affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles Without Carbon Ceramic Rotors

Brand:
Brembo - Corporate Logo
ES#:
4159089
Mfg#:
8W0698151N
In Stock
35% off MSRP

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

$113.99

This product was last offered at the strikethrough price on
01-21-2026

$73.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Integrated Engineering 3.0T Dual Pulley Power Kit

ES#4351841 - ieppcgj1 - Integrated Engineering 3.0T Dual Pulley Power Kit - Turn your Audi B8 S4 or S5 into an all-out street monster with IE's complete Dual Pulley kit! Includes ECU & TCU software plus Dual Pulley setup - Integrated Engineering - Audi

Turn your Audi B8 S4 or S5 into an all-out street monster with IE's complete Dual Pulley kit! Includes ECU & TCU software plus Dual Pulley setup affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Fits vehicles with DSG transmissions only

Brand:
Integrated Engineering - Corporate Logo
ES#:
4351841
Mfg#:
IEPPCGJ1
In Stock
$2579.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

7.5mm Wheel Spacers - Black (Pair)

ES#3476425 - 021460TMS02-06 - 7.5mm Wheel Spacers - Black (Pair) - Lightweight wheel spacers with a machined tab for easy removal - Turner Motorsport - Audi BMW Mercedes Benz 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#:
3476425
Mfg#:
021460TMS02-06
In Stock
ON SALE! SAVE 25%
$131.99

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

$98.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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