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Audi S4 Performance Parts & Upgrades

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IE Adjustable Front Sway End Links

ES#5375255 - IESSCK4 - IE Adjustable Front Sway End Links - Easy adjustments perfect any ride height and provide tight, responsive handling - Integrated Engineering - Audi

Easy adjustments perfect any ride height and provide tight, responsive handling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
5375255
Mfg#:
IESSCK4
Ships in 2 Business Days
$229.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 A5/S5 RS5 Front And Rear Adjustable Sway Bar Kit

ES#4065005 - 022847ecs01KT1 - Audi B9 A4/S4 A5/S5 RS5 Front And Rear Adjustable Sway Bar Kit - Reduce body roll and enhance handling! - ECS - Audi

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

Brand:
ECS - Corporate Logo
ES#:
4065005
Mfg#:
022847ECS01KT1
Ships on Oct 29, 2026
Auto Notify
ON SALE!
$722.99

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

$686.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 1 Heavy Duty Clutch Kit

ES#3106498 - k70286hdKT - Stage 1 Heavy Duty Clutch Kit - Ideal for the spirited daily-driver. Rated at 350ft/lbs. - South Bend Clutch - Audi

Ideal for the spirited daily-driver. Rated at 350ft/lbs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Works with stock flywheel

Brand:
South Bend Clutch - Corporate Logo
ES#:
3106498
Mfg#:
K70286HDKT
Ships in 1 Business Day
$683.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Performance Engine Mount Kit - Audi B5 S4

ES#2708159 - 000805ECS01AKT - ECS Performance Engine Mount Kit - Audi B5 S4 - Performance engine mounts to increase drivetrain rigidity - ECS - Audi

Performance engine mounts to increase drivetrain rigidity affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2708159
Mfg#:
000805ECS01AKT
Ships in 1-2 days
ON SALE!
$358.99

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

$341.04 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supertech Stainless Intake Valve Kit

ES#3647479 - ST-AIVN-1103SKT1 - Supertech Stainless Intake Valve Kit - Stock sized 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

Stock sized 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!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3647479
Mfg#:
ST-AIVN-1103SKT1
Back Ordered
$679.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

IE Front Sway Bar Upgrade

ES#5375237 - IESSCK3 - 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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
This front sway bar must be paired with the matching iE Rear Sway Bar (IESSCK1)

Brand:
Integrated Engineering - Corporate Logo
ES#:
5375237
Mfg#:
IESSCK3
Ships in 1 Business Day
$339.99 USD
This product is lifetime replacement eligible Lifetime Replacement

M14 Titanium Wheel Stud Kit - Raw - Set Of 20

ES#4487743 - TISTUD20145RAW - M14 Titanium Wheel Stud Kit - Raw - Set Of 20 - M14x1.5x75mm with conical nuts - Vargas Turbo Technologies - Audi Volkswagen

M14x1.5x75mm with conical nuts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4487743
Mfg#:
TISTUD20145RAW
Back Ordered
$339.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JHM S-Series Lowering Springs

ES#4046000 - JHM-B8A4S4SSLS - JHM S-Series Lowering Springs - Designed to enhance the look of your vehicle, improve driveability while retaining driver comfort, and increase your vehicles handling capability - JH Motorsports - Audi

Designed to enhance the look of your vehicle, improve driveability while retaining driver comfort, and increase your vehicles handling capability affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Average lowering of 1.25" Front & 1.0" Rear

Brand:
JH Motorsports - Corporate Logo
ES#:
4046000
Mfg#:
JHM-B8A4S4SSLS
Ships in 6 Business Days
$225.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

VPS Intercooler To Throttle Charge Pipe - Without BOV

ES#4414475 - B9CPBOV2017 - VPS Intercooler To Throttle Charge Pipe - Without BOV - Upgraded charge pipe kit for use with a blow off valve. - Verstarkt Performance Systems - Audi

Upgraded charge pipe kit for use with a blow off valve. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Verstarkt Performance Systems - Corporate Logo
ES#:
4414475
Mfg#:
B9CPBOV2017
Ships on Sep 17, 2026
$225.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Exact-Fit Stainless Steel Brake Lines - Four Piece

ES#538 - B5S4SSBLK-REAR - Rear Exact-Fit Stainless Steel Brake Lines - Four Piece - Mid & Rear set of DOT-compliant lines for an improved pedal feel - ECS - Audi

Mid & Rear set of DOT-compliant lines for an improved pedal feel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
538
Mfg#:
B5S4SSBLK-REAR
In Stock
ON SALE! SAVE 10%
$148.99

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

$134.09 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/8.5 A4/S4 Engine Bay Lighting Kit

ES#3690279 - 017146ECS01 - Audi B8/8.5 A4/S4 Engine Bay Lighting Kit - Seamlessly integrate ultra bright LED lighting under your hood! - ECS - Audi

Seamlessly integrate ultra bright LED lighting under your hood! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3690279
Mfg#:
017146ECS01
Ships on Jul 23, 2026
ON SALE!
$140.99

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

$133.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

Includes everything you need to install spacers on two wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits most aftermarket wheels that use conical seat wheel bolts

Brand:
Emmanuele Design - Corporate Logo
ES#:
4430382
Mfg#:
EMDSPACER10665CB
In Stock at Vendor
$110.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi Thrust Arm Monoball Upgrade - Pre-Installed in Meyle HD Arms (M12 Ball Joints)

ES#4429964 - 012596LA01 - Audi Thrust Arm Monoball Upgrade - Pre-Installed in Meyle HD Arms (M12 Ball Joints) - Eliminate deflection caused by stock rubber bushings! - ECS - Audi

Eliminate deflection caused by stock rubber bushings! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Up to production date 11/2/2009 (M12 Ball Joints)

Brand:
ECS - Corporate Logo
ES#:
4429964
Mfg#:
012596LA01
In Stock
ON SALE! SAVE 10%
$732.99

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

$659.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Drop-In Performance Billet Fuel Rail Kit

ES#3419591 - 034-106-7042-S4 - Complete Drop-In Performance Billet Fuel Rail Kit - Includes everything needed to install 034Motorsport Billet Aluminum Fuel Rails on your 2.7T - 034Motorsport - Audi

Includes everything needed to install 034Motorsport Billet Aluminum Fuel Rails on your 2.7T affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Only fits with factory 2.7T intake manifold - Does not fit RS4 manifold

Brand:
034Motorsport - Corporate Logo
ES#:
3419591
Mfg#:
034-106-7042-S4
Back Ordered
$659.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

IE 3.0T Supercharger Pulley Upgrade (4-Bolt Style)

ES#3647603 - IEBAVJ5 - IE 3.0T Supercharger Pulley Upgrade (4-Bolt Style) - Increases the supercharger RPM throughout the full powerband, raising supercharger speed by 7% - Integrated Engineering - Audi

Increases the supercharger RPM throughout the full powerband, raising supercharger speed by 7% affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
*Fits very late model years equipped with 4-bolt style supercharger pulleys - 3.0 TFSI Stage 2 Software is required in order for this pulley to yield a p

Brand:
Integrated Engineering - Corporate Logo
ES#:
3647603
Mfg#:
IEBAVJ5
Ships in 2 Business Days
$216.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Replacement Rear Rotor Rings (330x22) - B9/B9.5 Audi S4/S5

ES#4880725 - 034-304-2008 - Replacement Rear Rotor Rings (330x22) - B9/B9.5 Audi S4/S5 - Replacement Rotor Ring and Hardware Set for the 2-Piece Floating Brake Rotor Upgrade Kit - 034Motorsport - Audi

Replacement Rotor Ring and Hardware Set for the 2-Piece Floating Brake Rotor Upgrade Kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4880725
Mfg#:
034-304-2008
In Stock
$650.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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