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Audi S4 Performance Parts & Upgrades

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Lightweight Steel Flywheel (19lbs)

ES#2637201 - FW050SF - Lightweight Steel Flywheel (19lbs) - Unleash hidden power by reducing rotating mass with this single mass flywheel - Clutch Masters - Audi

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

Brand:
Clutch Masters - Corporate Logo
ES#:
2637201
Mfg#:
FW050SF
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.

$984.99

This product was last offered at the strikethrough price on
06-20-2026

$836.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front & Rear V5 Drilled & Slotted Brake Rotor - Set (350x34mm/330x22mm)

ES#5444968 - b930frrKT - Front & Rear V5 Drilled & Slotted Brake Rotor - Set (350x34mm/330x22mm) - Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. - ECS - Audi

Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
5444968
Mfg#:
B930FRRKT
In Stock
ON SALE!
$859.99

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

$834.16 USD
This product is lifetime replacement eligible Lifetime Replacement

Engine Street Shield Skid Plate Hardware Kit

ES#3493176 - 003251ECS01KT - 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 up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3493176
Mfg#:
003251ECS01KT
In Stock
ON SALE! SAVE 20%
$94.21

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

$75.37 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

ES#2177180 - 6-ECS-015 - Wheel Spacer & Bolt Kit - 5mm With Ball Seat Bolts - Get the right size wheel spacer for your Audi - ECS - Audi

Get the right size wheel spacer for your Audi affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2177180
Mfg#:
6-ECS-015
Ships on Jul 9, 2026
Auto Notify
ON SALE! SAVE 25%
$156.99

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

$117.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Rear Subframe Bushing Kit

ES#2864607 - 034-601-0005 - Billet Rear Subframe Bushing Kit - Maintain proper suspension geometry when cornering and reduce rear subframe movement - 034Motorsport - Audi

Maintain proper suspension geometry when cornering and reduce rear subframe movement affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2864607
Mfg#:
034-601-0005
Back Ordered
$274.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supertech Stainless Intake Valve Kit

ES#3647480 - ST-AIVN-1106SKT1 - Supertech Stainless Intake Valve Kit - +1mm oversized valve head diameter, single groove keeper setup for high RPM use - Includes Supertech valves, single groove keepers and IE valve seals - Assembled By ECS - Audi

+1mm oversized valve head diameter, single groove keeper setup for high RPM use - Includes Supertech valves, single groove keepers and IE valve seals affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
+1mm oversized valves & singe groove keeper setup - Requires machine work to cylinder head

Brand:
Assembled By ECS - Corporate Logo
ES#:
3647480
Mfg#:
ST-AIVN-1106SKT1
Back Ordered
$818.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/C7 Spherical Outer Tie Rod Kit

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4620241
Mfg#:
4616139PDKUMJA8D
In Stock
ON SALE! SAVE 24%
$355.99

This product was last offered at the strikethrough price on
01-03-2026

$272.33 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034 Motorsport 2.5mm Wheel Spacer - Pair

ES#4751521 - 034-604-7010 - 034 Motorsport 2.5mm Wheel Spacer - Pair - 2.5mm Wheel Spacer Pair is designed to fit most Audi & Volkswagen vehicles with a 57.1mm center bore and 5x112mm wheel bolt patterns. - 034Motorsport - Audi Volkswagen

2.5mm Wheel Spacer Pair is designed to fit most Audi & Volkswagen vehicles with a 57.1mm center bore and 5x112mm wheel bolt patterns. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4751521
Mfg#:
034-604-7010
In Stock
$48.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Strap Style Tow Hook - Red

ES#4641959 - E313 - Strap Style Tow Hook - Red - Designed to handle any off-track adventure quickly and reliably - Rennline - Audi

Designed to handle any off-track adventure quickly and reliably affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rennline - Corporate Logo
ES#:
4641959
Mfg#:
E313
Ships in 3 Business Days
$135.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

2-piece Lightweight Front Rotors - Pair (345x30)

Shaves 11lbs of unsprung weight from the rear of your car while increasing braking performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JH Motorsports - Corporate Logo
ES#:
4045893
Mfg#:
1025X345X30
Ships in 10 Business Days
$809.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Active Valve Control System

ES#3426977 - SSXAU677 - Active Valve Control System - Gain complete control of the OE exhaust valves on factory and Milltek Sport exhaust systems - Milltek Sport - Audi

Gain complete control of the OE exhaust valves on factory and Milltek Sport exhaust systems affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
3426977
Mfg#:
SSXAU677
Ships in 3 Business Days
$809.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JHM Drive Train Stabilizer (DTS) for B5 A4/S4 and C5 A6

ES#4045938 - B5C5DTS - JHM Drive Train Stabilizer (DTS) for B5 A4/S4 and C5 A6 - The JHM DTS is a straight bolt on upgrade using factory mounting points already on your car. NO cutting or welding needed! - JH Motorsports - Audi

The JHM DTS is a straight bolt on upgrade using factory mounting points already on your car. NO cutting or welding needed! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
JH Motorsports - Corporate Logo
ES#:
4045938
Mfg#:
B5C5DTS
Ships in 2 Business Days
$399.99 USD
This product is lifetime replacement eligible Lifetime Replacement

CTS Street Sport Engine Mount Kit

ES#4140455 - cts-em-b8-50dKT - CTS Street Sport Engine Mount Kit - 50 Durometer rubber construction - Set of two mounts for left and right sides - CTS - Audi

50 Durometer rubber construction - Set of two mounts for left and right sides affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
4140455
Mfg#:
CTS-EM-B8-50DKT
Back Ordered
Auto Notify
$399.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Maestro Tuning Suite - With Powertap Air Flash Tool

ES#3234533 - ED-MT-2.7TAPBKT - Maestro Tuning Suite - With Powertap Air Flash Tool - Ideal for shops and enthusiasts looking to recalibrate their vehicles for modified hardware - Eurodyne - Audi

Ideal for shops and enthusiasts looking to recalibrate their vehicles for modified hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Eurodyne - Corporate Logo
ES#:
3234533
Mfg#:
ED-MT-2.7TAPBKT
In Stock
$799.95 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RaceChip GTS Black With App Control

ES#4339360 - 917366 - RaceChip GTS Black With App Control - Get up to +66 hp and +52 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip - Race Chip - Audi

Get up to +66 hp and +52 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Race Chip - Corporate Logo
ES#:
4339360
Mfg#:
917366
Ships in 3 Business Days
$799.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip GTS Black With App Control

ES#4339048 - 904526 - RaceChip GTS Black With App Control - Get up to +41 hp and +74 through a safe and easy to use app-controlled tuning module from RaceChip - Race Chip - Audi

Get up to +41 hp and +74 through a safe and easy to use app-controlled tuning module from RaceChip affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Race Chip - Corporate Logo
ES#:
4339048
Mfg#:
904526
Ships in 3 Business Days
$799.00 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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