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Audi S4 Performance Parts & Upgrades

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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
ON SALE! SAVE 15%
$160.99

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

$136.84 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

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
ON SALE! SAVE 25%
$97.99

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

$73.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

850 Series Twin Disc Clutch Kit - Race

ES#3220834 - 02029-TD8R-S - 850 Series Twin Disc Clutch Kit - Race - The 850 series is a larger diameter assembly, which is designed for high horsepower applications - Steel flywheel included - Clutch Masters - Audi

The 850 series is a larger diameter assembly, which is designed for high horsepower applications - Steel flywheel included affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Clutch Masters - Corporate Logo
ES#:
3220834
Mfg#:
02029-TD8R-S
Ships in 3 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.

$3025.00

This product was last offered at the strikethrough price on
06-16-2026

$2571.99 USD
Free Shipping
on orders $49 and up

850 Series Twin Disc Clutch Kit - Race/Street

ES#3220825 - 02029-TD8S-S - 850 Series Twin Disc Clutch Kit - Race/Street - The 850 series is a larger diameter assembly, which is designed for high horsepower applications - Clutch Masters - Audi

The 850 series is a larger diameter assembly, which is designed for high horsepower applications affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Clutch Masters - Corporate Logo
ES#:
3220825
Mfg#:
02029-TD8S-S
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.

$3025.00

This product was last offered at the strikethrough price on
06-16-2026

$2571.99 USD
This product is lifetime replacement eligible Lifetime Replacement

3.5" Cone Style Air Filter

ES#4304100 - CTS-AF-250 - 3.5" Cone Style Air Filter - Replacement filter for CTS-IT-300R and CTS-IT-938 - CTS - Audi

Replacement filter for CTS-IT-300R and CTS-IT-938 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
4304100
Mfg#:
CTS-AF-250
Back Ordered
Auto Notify
ON SALE! SAVE 20%
$99.99

This product was last offered at the strikethrough price on
06-08-2026

$79.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Line Relocation Kit

ES#3102572 - 000931ECS07 - Fuel Line Relocation Kit - Re-routes the fuel line underneath the intake tube for a cleaner look! - ECS - Audi

Re-routes the fuel line underneath the intake tube for a cleaner look! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
From the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3102572
Mfg#:
000931ECS07
In Stock
ON SALE! SAVE 25%
$62.99

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

$47.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4/S5 Sportback 3.0T Valved Exhaust System & Luft-Technik Intake System

ES#4751050 - 026018ECSEBKT - Audi B9 S4/S5 Sportback 3.0T Valved Exhaust System & Luft-Technik Intake System - Improve the sound and performance of your vehicle with a valved catback & Luft-Technik Intake System - Enthusiast Bundles - Audi

Improve the sound and performance of your vehicle with a valved catback & Luft-Technik Intake System Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751050
Mfg#:
026018ECSEBKT
In Stock
ON SALE! SAVE 23%
$3293.99

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

$2549.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8 Sport Shocks & Struts Kit

ES#3031021 - 24-119818KT1 - B8 Sport Shocks & Struts Kit - Ideal for use with lowering springs and upgraded sway bars - German-made with the same famous lifetime warranty - Bilstein - Audi

Ideal for use with lowering springs and upgraded sway bars - German-made with the same famous lifetime warranty affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Bilstein - Corporate Logo
ES#:
3031021
Mfg#:
24-119818KT1
In Stock
$636.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EMD Wheel Spacer & Bolt Kit - 10mm With Ball Seat Bolts

ES#4042990 - EMD-SPACER10571B - EMD Wheel Spacer & Bolt Kit - 10mm With Ball Seat Bolts - Includes everything you need to install spacers on two wheels - Emmanuele Design - Audi Volkswagen

Includes everything you need to install spacers on two wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits OEM wheels or wheels that require ball seat wheel bolts

Brand:
Emmanuele Design - Corporate Logo
ES#:
4042990
Mfg#:
EMD-SPACER10571B
Ships in 1 Business Day
$110.00 USD
Free Shipping
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

Adjustable Damping Performance Coilover System - Audi B8/B8.5 & Thrust Arm Monoball Upgrade (M12 Ball Joints)

ES#4750975 - 025412ECS01EBKT - Adjustable Damping Performance Coilover System - Audi B8/B8.5 & Thrust Arm Monoball Upgrade (M12 Ball Joints) - Take control of your ride while going low with our sport-tuned coilover system! - Enthusiast Bundles - Audi

Take control of your ride while going low with our sport-tuned coilover system! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4750975
Mfg#:
025412ECS01EBKT
In Stock
ON SALE! SAVE 33%
$1872.98

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

$1249.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.

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