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Audi S4 Performance Parts & Upgrades

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TTE380+ Turbo Upgrade - B5 S4 & C5 A6 2.7T

ES#4630656 - TTE10041 - TTE380+ Turbo Upgrade - B5 S4 & C5 A6 2.7T - Designed to put out over 400HP! - The Turbo Engineers - Audi

Designed to put out over 400HP! Custom tuning software required for installation.

Brand:
The Turbo Engineers - Corporate Logo
ES#:
4630656
Mfg#:
TTE10041
Back Ordered
$2699.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

Brand:
BC Racing - Corporate Logo
ES#:
3675603
Mfg#:
S-07E-BR
Ships on Dec 14, 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 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 Dec 14, 2026
$1345.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Rubber Rear Shock Mount - Priced Each

ES#4681140 - 049327LA01 - Heavy Duty Rubber Rear Shock Mount - Priced Each - Enhance longevity and improve your Audi's handling with our in-house designed HD rubber shock mount! - ECS - Audi

Enhance longevity and improve your Audi's handling with our in-house designed HD rubber shock mount! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4681140
Mfg#:
049327LA01
In Stock
ON SALE! SAVE 25%
$58.99

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

$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear 2-Piece Brake Rotors - Pair (330x22)

ES#3493800 - 023944ecs01KT - Rear 2-Piece Brake Rotors - Pair (330x22) - Direct bolt-on replacement - 15% less weight! - ECS - Audi

Direct bolt-on replacement - 15% less weight! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3493800
Mfg#:
023944ECS01KT
In Stock
ON SALE!
$688.99

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

$668.32 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 12.5mm - With Dust Cap - with Black Conical Seat Bolts

ES#2863234 - 002403ECS02AKT4 - Wheel Spacer & Bolt Kit - 12.5mm - With Dust Cap - 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 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2863234
Mfg#:
002403ECS02AKT4
In Stock
ON SALE! SAVE 15%
$156.99

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

$133.44 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacers - 20mm (Pair)

ES#250711 - 002403ECS03A20KT - ECS Wheel Spacers - 20mm (Pair) - Exclusively built for your 57.1mm centerbore VW/Audi - ECS - Audi Volkswagen

Exclusively built for your 57.1mm centerbore VW/Audi 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
250711
Mfg#:
002403ECS03A20KT
In Stock
ON SALE! SAVE 10%
$140.99

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

$126.89 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EMD Auto 12.5mm Wheel Spacers - Pair (With Bolts)

ES#4042993 - EMDSPACER125665B - EMD Auto 12.5mm 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 Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
Emmanuele Design - Corporate Logo
ES#:
4042993
Mfg#:
EMDSPACER125665B
In Stock
$110.00 USD
Free Shipping
on orders $49 and up
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 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

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 2X Entries Into Our F80 M3 Sweepstakes

Brand:
EBC - Corporate Logo
ES#:
2621352
Mfg#:
USR1846
Ships in 1 Business Day
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
10-22-2026

$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

Brand:
Unitronic - Corporate Logo
ES#:
4852347
Mfg#:
UH044-EXA
Ships in 1 Business Day
$2634.99 USD

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

Brand:
Clutch Masters - Corporate Logo
ES#:
3220834
Mfg#:
02029-TD8R-S
Ships in 3 Business Days
$2604.99 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

Brand:
Clutch Masters - Corporate Logo
ES#:
3220825
Mfg#:
02029-TD8S-S
Ships in 7 Business Days
$2604.99 USD
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! 10X Entries Into Our F80 M3 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

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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