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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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Brembo GT Front Big Brake Kit - 2-Piece Type 3 Rotors (380x34)

ES#4265331 - 1N3.9059A3 - Brembo GT Front Big Brake Kit - 2-Piece Type 3 Rotors (380x34) - Featuring Silver 6 piston calipers, stainless brake lines and Brembo Sport brake pads - Brembo - Audi

Featuring Silver 6 piston calipers, stainless brake lines and Brembo Sport brake pads 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Brembo - Corporate Logo
ES#:
4265331
Mfg#:
1N3.9059A3
Ships in 3 Business Days
$4895.00 USD
Free Shipping
on orders $49 and up

Brembo GT-S Front Big Brake Kit - 2-Piece Slotted (380x34)

ES#4265335 - 1N2.9059AS - Brembo GT-S Front Big Brake Kit - 2-Piece Slotted (380x34) - Featuring Black (hard anodized) 6 piston calipers, stainless brake lines and Brembo Sport brake pads - Brembo - Audi

Featuring Black (hard anodized) 6 piston calipers, stainless brake lines and Brembo Sport brake pads 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Brembo - Corporate Logo
ES#:
4265335
Mfg#:
1N2.9059AS
Ships in 3 Business Days
$5095.00 USD
Free Shipping
on orders $49 and up

Brembo GT Front Big Brake Kit - 2-Piece Type 3 Rotors (380x34)

ES#4265332 - 1N3.9059A5 - Brembo GT Front Big Brake Kit - 2-Piece Type 3 Rotors (380x34) - Featuring Yellow 6 piston calipers, stainless brake lines and Brembo Sport brake pads - Brembo - Audi

Featuring Yellow 6 piston calipers, stainless brake lines and Brembo Sport brake pads 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Brembo - Corporate Logo
ES#:
4265332
Mfg#:
1N3.9059A5
Ships in 3 Business Days
$4895.00 USD
Free Shipping
on orders $49 and up

Traction-S Performance Lowering Springs

ES#4475546 - LS-TS-AI-0008-B - Traction-S Performance Lowering Springs - Average lowering of 0.6" front and 0.6" rear - GODSPEED - Audi

Average lowering of 0.6" front and 0.6" rear

Brand:
GODSPEED - Corporate Logo
ES#:
4475546
Mfg#:
LS-TS-AI-0008-B
Ships in 7 Business Days
$200.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

IE Rear Sway Bar Upgrade

ES#5375239 - IESUCZ3 - IE Rear Sway Bar Upgrade - Direct bolt-in replacement with adjustable stiffness for reduced body roll and increased grip! - Integrated Engineering - Audi

Direct bolt-in replacement with adjustable stiffness for reduced body roll and increased grip!

Brand:
Integrated Engineering - Corporate Logo
ES#:
5375239
Mfg#:
IESUCZ3
Ships in 4 Business Days
$459.99 USD
This product is lifetime replacement eligible Lifetime Replacement

IE Front Sway Bar Upgrade

ES#5375241 - IESUCZ1 - IE Front Sway Bar Upgrade - Direct bolt-in replacement with adjustable stiffness for reduced body roll and increased grip! - Integrated Engineering - Audi

Direct bolt-in replacement with adjustable stiffness for reduced body roll and increased grip! This front sway bar must be paired with the matching iE SQ5 Rear Sway Bar (IESUCZ3)

Brand:
Integrated Engineering - Corporate Logo
ES#:
5375241
Mfg#:
IESUCZ1
Ships in 4 Business Days
$459.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated With Exhaust Valves

ES#3466840 - SSXAU695 - Cat-Back Exhaust System - Resonated With Exhaust Valves - 2.50" stainless steel with quad GT-100 Cerakote black tips - Milltek Sport - Audi

2.50" stainless steel with quad GT-100 Cerakote black tips Fits models with factory rear sports differential
For vehicles with a sport differential and without brace bars

Brand:
Milltek Sport - Corporate Logo
ES#:
3466840
Mfg#:
SSXAU695
Ships on Oct 30, 2026
$3752.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated With Exhaust Valves

ES#3236155 - SSXAU649 - Cat-Back Exhaust System - Resonated With Exhaust Valves - 2.50" stainless steel with quad Cerakote black velvet oval tips - Milltek Sport - Audi

2.50" stainless steel with quad Cerakote black velvet oval tips Fits models without factory rear sports differential
For vehicles without a sport differential

Brand:
Milltek Sport - Corporate Logo
ES#:
3236155
Mfg#:
SSXAU649
Ships on Oct 30, 2026
$4236.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RaceChip GTS Black

ES#4339047 - 904525 - RaceChip GTS Black - Get up to +41 hp and +74 lb-ft through a safe and easy to use tuning module from RaceChip - Race Chip - Audi

Get up to +41 hp and +74 lb-ft through a safe and easy to use tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4339047
Mfg#:
904525
Ships on Oct 30, 2026
$749.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip RS

ES#4339046 - 904521 - RaceChip RS - Get up to +34 hp and +59 through a safe and easy to use tuning module from RaceChip - Race Chip - Audi

Get up to +34 hp and +59 through a safe and easy to use tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4339046
Mfg#:
904521
Ships on Oct 30, 2026
$449.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip S

ES#4339045 - 904520 - RaceChip S - Get up to +27 hp and +44 lb-ft through a safe and easy to use tuning module from RaceChip - Race Chip - Audi

Get up to +27 hp and +44 lb-ft through a safe and easy to use tuning module from RaceChip

Brand:
Race Chip - Corporate Logo
ES#:
4339045
Mfg#:
904520
Ships on Oct 30, 2026
$349.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4/S5 Carbon Intake System

ES#4039962 - VWR1241S4 - Audi B9 S4/S5 Carbon Intake System - The highest-performing, race-bred cold-air induction system for the current B9 Audi S4 & S5! - Racingline - Audi

The highest-performing, race-bred cold-air induction system for the current B9 Audi S4 & S5!

Brand:
Racingline - Corporate Logo
ES#:
4039962
Mfg#:
VWR1241S4
Ships on Oct 30, 2026
$1340.99 USD

Performance Downpipe Kit - Resonated

ES#3644165 - 777532 - Performance Downpipe Kit - Resonated - T304 Stainless Steel front pipe kit includes high flow secondary catalytic converters - Supersprint - Audi

T304 Stainless Steel front pipe kit includes high flow secondary catalytic converters

Brand:
Supersprint - Corporate Logo
ES#:
3644165
Mfg#:
777532
Ships in 3 Business Days
$5480.99 USD
Free Shipping

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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Manufacturer names and/or part numbers are used only for identification purposes.

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