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Audi A4 Performance Parts & Upgrades

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Audi B9 A4/S4/A5 Engine Street Shield Aluminum Skid Plate

ES#3411957 - 019207ecs01KT - Audi B9 A4/S4/A5 Engine Street Shield Aluminum Skid Plate - Protect your vehicle's plastic oil pan with this 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's plastic oil pan with this 4mm thick aluminum skid plate 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3411957
Mfg#:
019207ECS01KT
In Stock
ON SALE!
$394.99

This product was last offered at the strikethrough price on
10-21-2026

$368.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Street Density Line Motor Mount Kit - 50 Durometer

ES#4491679 - 034-509-5036 - Street Density Line Motor Mount Kit - 50 Durometer - Void-free and fluid-free, eliminating the slop associated with the factory mounts - 034Motorsport - Audi

Void-free and fluid-free, eliminating the slop associated with the factory mounts 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4491679
Mfg#:
034-509-5036
In Stock
$449.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Front Upper Control Arm Kit

ES#3199968 - 034-401-1042 - Density Line Front Upper Control Arm Kit - Refresh your front end with 034Motorsport's front upper control arm kit - 034Motorsport - Audi Porsche

Refresh your front end with 034Motorsport's front upper control arm kit 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
3199968
Mfg#:
034-401-1042
In Stock
$337.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

VW/Audi Atmospheric Diverter Valve Spacer - Black

ES#3551289 - 025254ECS01-01 - VW/Audi Atmospheric Diverter Valve Spacer - Black - Let your turbo blow off some air for an exhilarating driving experience! - ECS - Audi Volkswagen

Let your turbo blow off some air for an exhilarating driving experience! 10X Entries Into Our F80 M3 Sweepstakes

Fits models with OEM DV part numbers 06H145710J, 06H145710C, 06H145710E. Please verify before ordering.

Brand:
ECS - Corporate Logo
ES#:
3551289
Mfg#:
025254ECS01-01
In Stock
ON SALE! SAVE 30%
$86.99

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

$60.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 S4 / A4 S-Line Rear Diffuser - Gloss Black

ES#4033487 - 028808ECS01 - Audi B8 S4 / A4 S-Line Rear Diffuser - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! 10X Entries Into Our F80 M3 Sweepstakes

Fits pre-facelift B8 S-Line models with quad tips only

Brand:
ECS - Corporate Logo
ES#:
4033487
Mfg#:
028808ECS01
In Stock
ON SALE! SAVE 25%
$420.99

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

$315.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance High-Flow Air Intake System - 6" Velocity Stack

ES#4045629 - CTS-IT-290R - Performance High-Flow Air Intake System - 6" Velocity Stack - Designed to work in conjunction with the OEM air scoop to seamlessly force cold air into the system - Flowed through a massive 6" velocity stack filter! - CTS - Audi

Designed to work in conjunction with the OEM air scoop to seamlessly force cold air into the system - Flowed through a massive 6" velocity stack filter!

Brand:
CTS - Corporate Logo
ES#:
4045629
Mfg#:
CTS-IT-290R
In Stock
ON SALE! SAVE 15%
$299.99

This product was last offered at the strikethrough price on
09-29-2026

$254.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B7 A4 2.0T Luft-Technik Intercooler and Charge Pipe Kit

ES#3698662 - 017623ecs01-01 - Audi B7 A4 2.0T Luft-Technik Intercooler and Charge Pipe Kit - Full kit to upgrade your intercooler, charge pipes, and power steering cooler! - ECS - Audi

Full kit to upgrade your intercooler, charge pipes, and power steering cooler! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3698662
Mfg#:
017623ECS01-01
In Stock
ON SALE! SAVE 20%
$917.99

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

$733.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B5 A4 / S4 Quattro Adjustable Damping Coilovers

ES#4474069 - 000703LA01 - B5 A4 / S4 Quattro Adjustable Damping Coilovers - Features 32 way adjustable damping, variable length and zinc-coated shock bodies - ECS - Audi

Features 32 way adjustable damping, variable length and zinc-coated shock bodies 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4474069
Mfg#:
000703LA01
In Stock
ON SALE!
$829.99

This product was last offered at the strikethrough price on
08-20-2026

$799.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

FDS Front-Mount Intercooler Kit - Silver

ES#3470702 - IETPCK1 - FDS Front-Mount Intercooler Kit - Silver - Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods! - Integrated Engineering - Audi

Increase horsepower and eliminate heatsoak - Drop-in intercooler requires no cutting, trimming, or mods!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3470702
Mfg#:
IETPCK1
In Stock
$1034.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer & Bolt Kit - 10mm With Black Ball Seat Bolts

ES#2748191 - 00240302A10KT3 - ECS Wheel Spacer & Bolt Kit - 10mm With Black Ball Seat Bolts - Includes everything you need to install spacers on two wheels - ECS - Audi Volkswagen

Includes everything you need to install spacers on two wheels 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2748191
Mfg#:
00240302A10KT3
In Stock
ON SALE! SAVE 30%
$197.93

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

$138.55 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Forged I-Beam Tuscan Connecting Rods - Rifle Drilled

ES#2794552 - IERTVT1 - Forged I-Beam Tuscan Connecting Rods - Rifle Drilled - Set of 4 connecting rods, to be paired with 22mm wrist pin aftermarket pistons (JE, Wiseco, Mahle ETC) - Integrated Engineering - Audi Volkswagen

Set of 4 connecting rods, to be paired with 22mm wrist pin aftermarket pistons (JE, Wiseco, Mahle ETC)
To be used with aftermarket pistons with 22mm wrist pin

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794552
Mfg#:
IERTVT1
Ships on Dec 7, 2026
$749.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B9 A4 / S4 Lowering Spring Set

ES#4714528 - 051204LA01-A - B9 A4 / S4 Lowering Spring Set - Dramatically improve looks and handling with and average lowering up to 1.5" front and rear. - ECS - Audi

Dramatically improve looks and handling with and average lowering up to 1.5" front and rear. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4714528
Mfg#:
051204LA01-A
In Stock
ON SALE! SAVE 10%
$315.99

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

$284.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

3" High Flow Catalytic Converter

ES#2972519 - EXH-TDP-004-B8HF - 3" High Flow Catalytic Converter - Designed to seamlessly fit in place of factory catalytic converter - CTS - Audi

Designed to seamlessly fit in place of factory catalytic converter

Brand:
CTS - Corporate Logo
ES#:
2972519
Mfg#:
EXH-TDP-004-B8HF
Back Ordered
ON SALE! SAVE 10%
$299.99

This product was last offered at the strikethrough price on
09-29-2026

$269.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer & Bolt Kit - 15mm With Black Ball Seat Bolts

ES#2748193 - ECS10157KTWB1 - ECS Wheel Spacer & Bolt Kit - 15mm With Black Ball Seat Bolts - Includes everything you need to install spacers on two wheels - ECS - Audi Volkswagen

Includes everything you need to install spacers on two wheels 10X Entries Into Our F80 M3 Sweepstakes
Fits OEM wheels or wheels that require ball seat wheel bolts

Brand:
ECS - Corporate Logo
ES#:
2748193
Mfg#:
ECS10157KTWB1
In Stock
ON SALE! SAVE 30%
$174.99

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

$122.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport Springs - Set

ES#251841 - 50361 - Sport Springs - Set - Unrivaled comfort and performance. Average lowering of 1.5"F 1.5"R - H&R - Audi

Unrivaled comfort and performance. Average lowering of 1.5"F 1.5"R We Price Match - Give Us A Call or Chat!
Sedan models only

Brand:
H&R - Corporate Logo
ES#:
251841
Mfg#:
50361
In Stock
15% off MSRP

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

$439.00

This product was last offered at the strikethrough price on
10-01-2026

$373.15 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Hi-Volume Fuel Pump Upgrade Kit

ES#2226090 - 10-127-100K - Hi-Volume Fuel Pump Upgrade Kit - Flow Rates up to 50% higher on 2.0T FSI engines, easily installed during a cam follower service! - Autotech - Audi Volkswagen

Flow Rates up to 50% higher on 2.0T FSI engines, easily installed during a cam follower service!

Brand:
Autotech - Corporate Logo
ES#:
2226090
Mfg#:
10-127-100K
In Stock
$349.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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