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Audi S4 Performance Parts & Upgrades

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Wheel Spacer & Bolt Kit - 12.5mm With Ball Seat Bolts

ES#2603075 - 002411ECS02AKT3 - Wheel Spacer & Bolt Kit - 12.5mm 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 OEM wheels, or wheels that use OEM ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2603075
Mfg#:
002411ECS02AKT3
In Stock
ON SALE! SAVE 25%
$167.99

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

$125.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

BOSS800 Hybrid Turbocharger

ES#5435523 - TR-2251 - BOSS800 Hybrid Turbocharger - Blending OEM drivability with Tier 1 supercar power. - CTS - Audi

Blending OEM drivability with Tier 1 supercar power.

Brand:
CTS - Corporate Logo
ES#:
5435523
Mfg#:
TR-2251
Ships in 8 Business Days
$2499.99 USD
Free Shipping

Bilstein B16 PSS10 Suspension System

ES#3426731 - 48-262316 - Bilstein B16 PSS10 Suspension System - Height adjustable suspension system offering adjustable compression and rebound to dial in for competition, comfort, or anywhere in between. World-famous Bilstein quality with a limited lifetime warranty! - Bilstein - Audi

Height adjustable suspension system offering adjustable compression and rebound to dial in for competition, comfort, or anywhere in between. World-famous Bilstein quality with a limited lifetime warranty! 10X Entries Into Our F80 M3 Sweepstakes
For models with build date up to 7/11/16, w/ 53mm front strut body diameter - Vehicles equipped with Electronic

Brand:
Bilstein - Corporate Logo
ES#:
3426731
Mfg#:
48-262316
Ships in 3 Business Days
$2499.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034 Street Density Transmission Mount & Billet Aluminum Transmission Mount Insert

ES#5492061 - 034-509-4053KT - 034 Street Density Transmission Mount & Billet Aluminum Transmission Mount Insert - Improve the performance of the factory transmission mount and the billet aluminum insert is designed to fill the large void in the factory transmission mount - 034Motorsport - Audi

Improve the performance of the factory transmission mount and the billet aluminum insert is designed to fill the large void in the factory transmission mount 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
5492061
Mfg#:
034-509-4053KT
In Stock
$135.00 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
$995.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

front HPS 5.0 Performance Brake Pad Set

ES#2748638 - HB641B.696 - front HPS 5.0 Performance Brake Pad Set - Next generation high performance street brake pad offering greater stopping power and pedal feel, with very low dust and noise - Hawk - Audi

Next generation high performance street brake pad offering greater stopping power and pedal feel, with very low dust and noise

Brand:
Hawk - Corporate Logo
ES#:
2748638
Mfg#:
HB641B.696
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.

$228.99

This product was last offered at the strikethrough price on
10-20-2026

$206.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Snub Mount

ES#2718769 - 004329ECS01A - Performance Snub Mount - Reduce driveline lash with a full polyurethane mount - ECS - Audi

Reduce driveline lash with a full polyurethane mount 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2718769
Mfg#:
004329ECS01A
In Stock
ON SALE! SAVE 25%
$76.99

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

$57.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4/S4 Gloss Black Grille Accent Set - Pre Facelift

ES#3697647 - 027962ECS01 - Audi B8 A4/S4 Gloss Black Grille Accent Set - Pre Facelift - Upgrade your exterior styling - ECS - Audi

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

Fits Pre-Facelift models up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3697647
Mfg#:
027962ECS01
In Stock
ON SALE! SAVE 15%
$188.99

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

$160.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Wheel Spacer Pair - 15mm

ES#3618566 - 034-604-7005 - 034Motorsport Wheel Spacer Pair - 15mm - Designed to fit most Audi & Volkswagen vehicles with a 66.6mm center bore and 5x112mm wheel bolt patterns. - 034Motorsport - Audi

Designed to fit most Audi & Volkswagen vehicles with a 66.6mm center bore and 5x112mm wheel bolt patterns. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3618566
Mfg#:
034-604-7005
In Stock
$115.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete ECS Performance Engine Mount Kit - Audi B6/B7 S4

ES#2723046 - 000805ECS02A2KT - Complete ECS Performance Engine Mount Kit - Audi B6/B7 S4 - Includes ECS performance polyurethane engine mounts and snub mount - ECS - Audi

Includes ECS performance polyurethane engine mounts and snub mount 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2723046
Mfg#:
000805ECS02A2KT
In Stock
ON SALE! SAVE 10%
$455.99

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

$410.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 / A4 S-Line Rear Bumper Side Splitters - Gloss Black

ES#4164511 - 004751la01 - Audi B9 S4 / A4 S-Line Rear Bumper Side Splitters - Gloss Black - Spice up the exterior of your Audi with gloss black spats! - ECS - Audi

Spice up the exterior of your Audi with gloss black spats! 10X Entries Into Our F80 M3 Sweepstakes

Fits pre-facelift models up to 2019 model year

Brand:
ECS - Corporate Logo
ES#:
4164511
Mfg#:
004751LA01
In Stock
ON SALE! SAVE 25%
$133.99

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

$100.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Valvesonic

2.37" stainless steel with quad 100mm Titanium tips From the 2013 model year

Brand:
Milltek Sport - Corporate Logo
ES#:
2827525
Mfg#:
SSXAU408
Ships on Nov 10, 2026
$4901.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Fog Light Grille Overlay Set - Audi B8.5 A4/S4

ES#3419105 - 022928ecs01KT - Carbon Fiber Fog Light Grille Overlay Set - Audi B8.5 A4/S4 - Masks the aluminum-look trim strips on the fog light grilles with carbon fiber - ECS - Audi

Masks the aluminum-look trim strips on the fog light grilles with carbon fiber 10X Entries Into Our F80 M3 Sweepstakes

Fits Facelift models from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3419105
Mfg#:
022928ECS01KT
In Stock
ON SALE! SAVE 15%
$173.99

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

$147.89 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

AWE Performance Intercooler Kit - Audi 2.7T - With Carbon Fiber Shrouds

ES#4044041 - 4510-11040 - AWE Performance Intercooler Kit - Audi 2.7T - With Carbon Fiber Shrouds - Produces a peak increase of 18.5 ft-lbs and an increase of 19.5hp to the wheels vs. the stock intercoolers. - AWE - Audi

Produces a peak increase of 18.5 ft-lbs and an increase of 19.5hp to the wheels vs. the stock intercoolers. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
AWE - Corporate Logo
ES#:
4044041
Mfg#:
4510-11040
In Stock at Vendor
5% off MSRP

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

$1026.99

This product was last offered at the strikethrough price on
10-20-2026

$975.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Power Stop Z26 Street Warrior Front & Rear Brake Kit (345mm/330mm)

ES#3990097 - K6141-26 - Power Stop Z26 Street Warrior Front & Rear Brake Kit (345mm/330mm) - A complete 4-wheel performance brake upgrade featuring drilled & slotted rotors and high-performance carbon-fiber ceramic pads. - Power Stop - Audi

A complete 4-wheel performance brake upgrade featuring drilled & slotted rotors and high-performance carbon-fiber ceramic pads. Models with 345mm Front & 330mm Rear Rotors

Brand:
Power Stop - Corporate Logo
ES#:
3990097
Mfg#:
K6141-26
Ships in 2 Business Days
$695.99 USD
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.

Let us help you find the parts that fit your Audi

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