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Audi S4 Performance Parts & Upgrades

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Forged H-Beam Connecting Rods

ES#2794230 - IERHVD1 - Forged H-Beam Connecting Rods - Set of 6 - Integrated Engineering - Audi

Set of 6 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794230
Mfg#:
IERHVD1
Ships in 4 Business Days
$808.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front ISWEEP Brake Pads - RS 3 8Y/S4/S5/RS 5/SQ5 B9

ES#5433241 - IS.XXX.RR1553 - Front ISWEEP Brake Pads - RS 3 8Y/S4/S5/RS 5/SQ5 B9 - From low-dust daily driving to full race endurance, iSWEEP brake pads deliver precision-tuned compounds that give you the exact bite, control, and fade resistance your driving demands. - iSWEEP - Audi

From low-dust daily driving to full race endurance, iSWEEP brake pads deliver precision-tuned compounds that give you the exact bite, control, and fade resistance your driving demands. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
iSWEEP - Corporate Logo
ES#:
5433241
Mfg#:
IS.XXX.RR1553
Ships in 1 Business Day
Starting at $230.00 USD
Customize
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 A4/S4 - Adjustable Damping Performance Coilover System & 19" Style 628 ALZOR Wheels

ES#4759731 - 025412ECS01EB3KT - Audi B8/B8.5 A4/S4 - Adjustable Damping Performance Coilover System & 19" Style 628 ALZOR Wheels - Enthusiast Bundles - Audi

Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4759731
Mfg#:
025412ECS01EB3KT
In Stock
ON SALE! SAVE 33%
$2382.98

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

$1599.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi EA839 3.0T W.2 ECU Tune

ES#4715345 - 05-839-00132-1KT - Audi EA839 3.0T W.2 ECU Tune - Increase of +81 Horsepower, and +126 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance exhausts & high-flow air filters! - Weistec - Audi

Increase of +81 Horsepower, and +126 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance exhausts & high-flow air filters! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Weistec - Corporate Logo
ES#:
4715345
Mfg#:
05-839-00132-1KT
In Stock at Vendor
$1599.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ARM Motorsports Intake - OEM Inlet

ES#4745446 - 30TINT - ARM Motorsports Intake - OEM Inlet - For use with a factory throttle body inlet. - ARM Motorsports - Audi

For use with a factory throttle body inlet. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ARM Motorsports - Corporate Logo
ES#:
4745446
Mfg#:
30TINT
Ships on Jul 8, 2026
$227.00 USD
Free Shipping

Rear HPS Performance Brake Pad Set

ES#2092634 - HB642F.658 - Rear HPS Performance Brake Pad Set - One of the best-selling all around brake pads - Hawk - Audi

One of the best-selling all around brake pads affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hawk - Corporate Logo
ES#:
2092634
Mfg#:
HB642F.658
In Stock at Vendor
$143.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Front Lip Overlay - Audi B8 A4 S-Line / S4

ES#3218893 - 022693ECS01 - Carbon Fiber Front Lip Overlay - Audi B8 A4 S-Line / S4 - Add a subtle touch of carbon fiber to your front bumper - ECS - Audi

Add a subtle touch of carbon fiber to your front bumper affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Up to the 2012 model year (Pre-Facelift)

Brand:
ECS - Corporate Logo
ES#:
3218893
Mfg#:
022693ECS01
In Stock
ON SALE! SAVE 47%
$225.99

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

$120.88 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Lightweight Tubular Front Subframe

ES#4701693 - WAS-520 - Lightweight Tubular Front Subframe - Increases chassis rigidity for improved handling performance and eliminates subframe shifting - Verkline - Audi

Increases chassis rigidity for improved handling performance and eliminates subframe shifting affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Verkline - Corporate Logo
ES#:
4701693
Mfg#:
WAS-520
Ships in 5 Business Days
$1569.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

VTF Adjustable Lowering Springs

Aggressive looks and ultimate handling. Average lowering of 1.0"F 1.8"R affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
4070750
Mfg#:
23013-1
Ships in 4 Business Days
$782.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 2 Clutch Kit - Lightweight Aluminum Flywheel (9lb)

ES#2576032 - SA862KT - Stage 2 Clutch Kit - Lightweight Aluminum Flywheel (9lb) - Features a full faced, steel backed, pure kevlar disc with a torque rating of 490 ft/lbs - Spec Clutches - Audi

Features a full faced, steel backed, pure kevlar disc with a torque rating of 490 ft/lbs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Spec Clutches - Corporate Logo
ES#:
2576032
Mfg#:
SA862KT
Ships in 1-2 days
$1559.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8/B8.5 A4/S4 Lowering Springs, Shocks & Installation Kit

ES#4708852 - 047330LA02KT - B8/B8.5 A4/S4 Lowering Springs, Shocks & Installation Kit - Dramatically improve looks and handling with and average lowering up to 1.6" front and rear. Paired with ECS Tuning Cup Kit Installation Kit & Bilstein B8 Shocks - Assembled By ECS - Audi

Dramatically improve looks and handling with and average lowering up to 1.6" front and rear. Paired with ECS Tuning Cup Kit Installation Kit & Bilstein B8 Shocks 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#:
4708852
Mfg#:
047330LA02KT
Ships on Sep 18, 2026
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$1745.14

This product was last offered at the strikethrough price on
05-04-2026

$1555.45 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Coolant Performance System

ES#3219341 - MS100127 - APR Coolant Performance System - Drastically reduces intake air temps (IAT), minimizes heat soak, and provides increased performance! - APR - Audi

Drastically reduces intake air temps (IAT), minimizes heat soak, and provides increased performance! Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
*Pre-faclift models (up to 2012) require Fit Kit - Please see Fit Kit MS100136 or ES3219342 for a complet

Brand:
APR - Corporate Logo
ES#:
3219341
Mfg#:
MS100127
Ships on Jul 15, 2026
11% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$1743.99

This product was last offered at the strikethrough price on
06-18-2026

$1549.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ultra Low Coilover System - Fixed Damping

ES#2718824 - 29019-1 - Ultra Low Coilover System - Fixed Damping - Extreme lowering capabilities - Average lowering of 1.5"-2.7"F 1.4"-2.7"R - H&R - Audi

Extreme lowering capabilities - Average lowering of 1.5"-2.7"F 1.4"-2.7"R affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Vehicles equipped with Electronic Damping Control (EDC) will lose shock damping and receive a system error code with coilover systems.

Brand:
H&R - Corporate Logo
ES#:
2718824
Mfg#:
29019-1
Ships in 4 Business Days
$1544.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 3 Clutch Kit - Lightweight Aluminum Flywheel (9lb)

ES#2576033 - SA863KT - Stage 3 Clutch Kit - Lightweight Aluminum Flywheel (9lb) - Features a 6 puck, sprung hub disc with a torque rating of 580 ft/lbs - Spec Clutches - Audi

Features a 6 puck, sprung hub disc with a torque rating of 580 ft/lbs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Spec Clutches - Corporate Logo
ES#:
2576033
Mfg#:
SA863KT
Ships in 6 Business Days
$1541.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

EMD Auto 20mm Wheel Spacers - Pair (With Bolts)

ES#4430402 - EMD-SPACER-20-66 - EMD Auto 20mm 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 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#:
4430402
Mfg#:
EMD-SPACER-20-66
In Stock
$110.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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