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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Performance Parts & Upgrades

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034Motorsport Radiator Upgrade

ES#4900053 - 034-102-1005 - 034Motorsport Radiator Upgrade - Replace your factory radiator with a larger, more efficient radiator to improve cooling capacity and maintain peak performance. - 034Motorsport - Audi

Replace your factory radiator with a larger, more efficient radiator to improve cooling capacity and maintain peak performance. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4900053
Mfg#:
034-102-1005
Ships on Sep 9, 2026
ON SALE! SAVE 10%
$800.00

This product was last offered at the strikethrough price on
08-17-2026

$720.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 5mm With Black Ball Seat Bolts

ES#2748278 - 6-ECS-015 - Wheel Spacer & Bolt Kit - 5mm With Black Ball Seat Bolts - Get the right size wheel spacer for your Audi - ECS - Audi

Get the right size wheel spacer for your Audi 10X Entries Into Our F80 M3 Sweepstakes
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748278
Mfg#:
6-ECS-015
In Stock
ON SALE! SAVE 25%
$140.99

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

$105.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 Intercooler Charge Pipe Kit

ES#3638868 - 023880ecs01aKT - Audi B9 S4 Intercooler Charge Pipe Kit - Increase intake air flow with our high flow charge pipes for your ECS Tuning or OEM intercooler! - ECS - Audi

Increase intake air flow with our high flow charge pipes for your ECS Tuning or OEM intercooler! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3638868
Mfg#:
023880ECS01AKT
In Stock
ON SALE! SAVE 20%
$448.99

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

$359.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

SuperDuper Turbo Inlet Pipe

ES#4642915 - 034-108-5036 - SuperDuper Turbo Inlet Pipe - Designed to maximize performance for Dynamic+ Stage 3 Hybrid Turbo Tuning Software - 034Motorsport - Audi

Designed to maximize performance for Dynamic+ Stage 3 Hybrid Turbo Tuning Software 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4642915
Mfg#:
034-108-5036
In Stock
ON SALE! SAVE 14%
$180.00

This product was last offered at the strikethrough price on
08-17-2026

$153.90 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4 S-Line / S4 Grille Accent Set - Gloss Black

ES#3991472 - 028800ECS01 - Audi B9 A4 S-Line / S4 Grille Accent Set - Gloss Black - Upgrade your exterior styling - ECS - Audi

Upgrade your exterior styling 10X Entries Into Our F80 M3 Sweepstakes

Fits up to 2019 model year with *pre-facelift* front bumpers

Brand:
ECS - Corporate Logo
ES#:
3991472
Mfg#:
028800ECS01
In Stock
ON SALE! SAVE 20%
$292.99

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

$234.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

H&R VTF Adjustable Lowering Springs

ES#3479162 - 23007-1 - H&R VTF Adjustable Lowering Springs - More lowering, more features, and more personalization! Average Lowering of 0.75 - 1.6" front & rear. - H&R - Audi

More lowering, more features, and more personalization! Average Lowering of 0.75 - 1.6" front & rear. We Price Match - Give Us A Call or Chat! Fits both models with adaptive damping suspension and without - Lowering height will vary between suspension ty

Brand:
H&R - Corporate Logo
ES#:
3479162
Mfg#:
23007-1
Ships in 3 Business Days
$1150.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE HPFP Internal Upgrade Kit

ES#4706078 - iefuvz1KT - IE HPFP Internal Upgrade Kit - The largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and Stage 1/2 Plus ECU tunes. - Integrated Engineering - Audi

The largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and Stage 1/2 Plus ECU tunes.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4706078
Mfg#:
IEFUVZ1KT
In Stock
$448.99 USD
Free Shipping
on orders $49 and up

Unitronic Intercooler Upgrade 3.0TFSI B9 S4/S5

ES#4362352 - UH017-ICA - Unitronic Intercooler Upgrade 3.0TFSI B9 S4/S5 - Direct OEM replacement kit featuring an over-sized bar and plate intercooler core made from cast aluminum core and end tanks, proprietary internal fin and louver configuration, and 79% more volume than OEM! - Unitronic - Audi

Direct OEM replacement kit featuring an over-sized bar and plate intercooler core made from cast aluminum core and end tanks, proprietary internal fin and louver configuration, and 79% more volume than OEM!

Brand:
Unitronic - Corporate Logo
ES#:
4362352
Mfg#:
UH017-ICA
Ships in 1 Business Day
$949.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front 2-Piece Brake Rotors - Pair (350x34)

ES#4429973 - 034-301-1008 - Front 2-Piece Brake Rotors - Pair (350x34) - 034Motorsport 350mmx34mm 2-Piece Floating Front Brake Rotor Upgrade Kit - 034Motorsport - Audi

034Motorsport 350mmx34mm 2-Piece Floating Front Brake Rotor Upgrade Kit 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4429973
Mfg#:
034-301-1008
In Stock
ON SALE! SAVE 14%
$1050.00

This product was last offered at the strikethrough price on
08-17-2026

$897.75 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front 2-Piece Scalloped Brake Rotors - Pair (350x34)

ES#3559513 - 023940ECS01KT - Front 2-Piece Scalloped Brake Rotors - Pair (350x34) - Direct bolt-on upgrade to Tru-Float scalloped style rotors. Over 15% less weight! - ECS - Audi

Direct bolt-on upgrade to Tru-Float scalloped style rotors. Over 15% less weight! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3559513
Mfg#:
023940ECS01KT
In Stock
ON SALE! SAVE 18%
$1128.97

This product was last offered at the strikethrough price on
04-16-2026

$929.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stainless Steel Racing Catalyst for B9 Audi S4/S5

ES#4005390 - 034-105-4045 - Stainless Steel Racing Catalyst for B9 Audi S4/S5 - Offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note - 034Motorsport - Audi

Offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4005390
Mfg#:
034-105-4045
In Stock
ON SALE! SAVE 40%
$1700.00

This product was last offered at the strikethrough price on
03-08-2026

$1026.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

ES#2603073 - 002411ECS02AKT2 - Wheel Spacer & Bolt Kit - 10mm With Ball Seat Bolts - Complete kit for two wheels, includes everything you need to install spacers - ECS - Audi

Complete kit for two wheels, includes everything you need to install spacers 10X Entries Into Our F80 M3 Sweepstakes
Fits OE wheels, or wheels that use OE ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2603073
Mfg#:
002411ECS02AKT2
Back Ordered
Auto Notify
ON SALE!
$140.99

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

$133.94 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

KOMPACT EM BOV VR18 Plum Back

ES#4745487 - TS-0223-1279 - KOMPACT EM BOV VR18 Plum Back - 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.

Brand:
TurboSmart - Corporate Logo
ES#:
4745487
Mfg#:
TS-0223-1279
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.

$309.99

This product was last offered at the strikethrough price on
08-23-2026

$278.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Front Upper Control Arm Kit

ES#4164442 - 81383 - Adjustable Front Upper Control Arm Kit - Adjust front camber and caster 1.5 on the Audi B9 platform with these forged aluminum adjustable control arms from SPC! - SPC - Audi

Adjust front camber and caster ±1.5° on the Audi B9 platform with these forged aluminum adjustable control arms from SPC!

Brand:
SPC - Corporate Logo
ES#:
4164442
Mfg#:
81383
In Stock at Vendor
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

IE HPFP Internal Upgrade

ES#4706077 - IEFUVZ1 - IE HPFP Internal Upgrade - The largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and Stage 1/2 Plus ECU tunes. - Integrated Engineering - Audi

The largest volume possible piston and cylinder design to unlock fuel delivery for hybrid turbos and Stage 1/2 Plus ECU tunes.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4706077
Mfg#:
IEFUVZ1
In Stock
$419.99 USD
Free Shipping
on orders $49 and up

Wheel Spacer & Bolt Kit - 5mm With Black Conical Seat Bolts

ES#2748279 - 6-ECS-015 - Wheel Spacer & Bolt Kit - 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 10X Entries Into Our F80 M3 Sweepstakes
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748279
Mfg#:
6-ECS-015
In Stock
ON SALE! SAVE 25%
$140.99

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

$105.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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