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Audi A4 Performance Parts & Upgrades

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034Motorsport Wheel Spacer Pair - 10mm

ES#3618560 - 034-604-7001 - 034Motorsport Wheel Spacer Pair - 10mm - Designed to fit most Audi & Volkswagen vehicles with a 57.1mm center bore and 5x112mm wheel bolt patterns - 034Motorsport - Audi Volkswagen

Designed to fit most Audi & Volkswagen vehicles with a 57.1mm center bore and 5x112mm wheel bolt patterns

Brand:
034Motorsport - Corporate Logo
ES#:
3618560
Mfg#:
034-604-7001
In Stock
$89.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4 2.0T Valved Exhaust System - Cat Back

ES#4488077 - 021275ECS01 - Audi B9 A4 2.0T Valved Exhaust System - Cat Back - Max gains of +16 WHP and +17 WTQ on our B9 A4 equipped with a Luft-Technik intake, ECS Intercooler/charge pipes, and a stage 1 tune! - ECS - Audi

Max gains of +16 WHP and +17 WTQ on our B9 A4 equipped with a Luft-Technik intake, ECS Intercooler/charge pipes, and a stage 1 tune! 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles up through the 2018 model year only (Pre-Facelift)

Brand:
ECS - Corporate Logo
ES#:
4488077
Mfg#:
021275ECS01
Ships on Nov 13, 2026
ON SALE!
Starting at $1156.67 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 / C7 Brake Cooling Duct Set

ES#4353029 - 006945la04 - Audi B8 / C7 Brake Cooling Duct Set - Increase air flow to your brakes! - ECS - Audi

Increase air flow to your brakes! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4353029
Mfg#:
006945LA04
Ships on Sep 8, 2026
Auto Notify
$91.99 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 For Our 25th Anniversary Sweepstakes!

Fits Facelift models with S-Line(S4) front bumpers 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

Front Limited Slip Differential

ES#2836967 - 18309170WK - Front Limited Slip Differential - Put all your power to the ground! - Wavetrac - Audi

Put all your power to the ground! For models with 01E 6-Speed manual transmission only

Brand:
Wavetrac - Corporate Logo
ES#:
2836967
Mfg#:
18309170WK
Ships in 2 Business Days
$1515.99 USD
Free Shipping

1.8T Billet Aluminum Fuel Injector Cup - Set Of Four

ES#4920294 - 045960la02KT - 1.8T Billet Aluminum Fuel Injector Cup - Set Of Four - Upgrade to heavy-duty billet aluminum construction for maximum durability! - ECS - Audi Volkswagen

Upgrade to heavy-duty billet aluminum construction for maximum durability! 10X Entries For Our 25th Anniversary Sweepstakes!
For Vehicles with Engine Codes ATW, and AWM.

Brand:
ECS - Corporate Logo
ES#:
4920294
Mfg#:
045960LA02KT
In Stock
ON SALE! SAVE 20%
$83.99

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

$67.17 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Mahle PowerPak Piston Set - 83mm Bore

ES#3476219 - MAHFSI197800168 - Mahle PowerPak Piston Set - 83mm Bore - Forged alloy pistons - 83mm Bore (+.5mm overbore), 20mm wrist pins, 9.25:1 compression ratio - Integrated Engineering - Audi Volkswagen

Forged alloy pistons - 83mm Bore (+.5mm overbore), 20mm wrist pins, 9.25:1 compression ratio 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3476219
Mfg#:
MAHFSI197800168
In Stock
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

JE Performance Forged Piston Set

ES#3612517 - 284779 - JE Performance Forged Piston Set - Includes rings, wrist pins, and pin locks - 82.5mm bore +.5mm overbore, 10.38:1 CR, 92.8mm stroke (stock) - JE Piston - Audi Volkswagen

Includes rings, wrist pins, and pin locks - 82.5mm bore +.5mm overbore, 10.38:1 CR, 92.8mm stroke (stock)

Brand:
JE Piston - Corporate Logo
ES#:
3612517
Mfg#:
284779
Back Ordered
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Service Kit

ES#2561325 - 06C905115M2KT - Ignition Service Kit - Includes four OE red coil packs and four NGK platinum spark plugs - Assembled By ECS - Audi Volkswagen

Includes four OE red coil packs and four NGK platinum spark plugs 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2561325
Mfg#:
06C905115M2KT
In Stock
ON SALE!
$186.64 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Flow High Pressure Fuel Pump

ES#4057584 - 10-127-101C2K - High Flow High Pressure Fuel Pump - New Hitachi fuel pump with Autotech internal upgrades pre-installed for a 5% torque increase and additional 10 bar of fuel rail pressure! - Autotech - Audi

New Hitachi fuel pump with Autotech internal upgrades pre-installed for a 5% torque increase and additional 10 bar of fuel rail pressure!

Brand:
Autotech - Corporate Logo
ES#:
4057584
Mfg#:
10-127-101C2K
Ships in 2 Business Days
$894.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front V5 Drilled & Slotted Brake Rotors - Set (320x30)

ES#4668216 - 8K0615301A-XS - Front V5 Drilled & Slotted Brake Rotors - Set (320x30) - 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. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4668216
Mfg#:
8K0615301A-XS
In Stock
ON SALE!
$426.99

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

$405.63 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Combination Parking Brake Caliper Rear Brake Kit

ES#3701664 - 140-14591 - Combination Parking Brake Caliper Rear Brake Kit - Features 12.19" slotted rotors & black calipers - Provides balanced brake performance and style to compliment front big brake kits! - Wilwood - Audi

Features 12.19" slotted rotors & black calipers - Provides balanced brake performance and style to compliment front big brake kits!

Brand:
Wilwood - Corporate Logo
ES#:
3701664
Mfg#:
140-14591
Ships in 10 Business Days
$1114.99 USD

Stage 3+ Clutch Kit

ES#2918852 - SA783F-2 - Stage 3+ Clutch Kit - Ideal for high torque applications - Rated at 495 ft/lbs - Spec Clutches - Audi

Ideal for high torque applications - Rated at 495 ft/lbs

Brand:
Spec Clutches - Corporate Logo
ES#:
2918852
Mfg#:
SA783F-2
Ships in 3 Business Days
$1105.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - Stage 4 - 2-Piece Rotors (380x34)

ES#2785042 - 003883ECS02KT - Front Big Brake Kit - Stage 4 - 2-Piece Rotors (380x34) - Featuring Black RS5 8-piston calipers, ECS stainless steel lines & Hawk HPS pads - ECS - Audi

Featuring Black RS5 8-piston calipers, ECS stainless steel lines & Hawk HPS pads 10X Entries For Our 25th Anniversary Sweepstakes!
Please download the installation template to confirm this brake kit will fit behind your factory or after

Brand:
ECS - Corporate Logo
ES#:
2785042
Mfg#:
003883ECS02KT
Ships on Dec 3, 2026
Auto Notify
$4415.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Street Performance Coilover System - Fixed Damping

ES#240272 - 29092-1 - Street Performance Coilover System - Fixed Damping - Unrivaled comfort and performance - Average lowering of 1.0"-2.2"F 1.0"-2.2"R. - H&R - Audi

Unrivaled comfort and performance - Average lowering of 1.0"-2.2"F 1.0"-2.2"R. 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For Sedan models only. 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#:
240272
Mfg#:
29092-1
Ships in 3 Business Days
10% off MSRP

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

$2450.00

This product was last offered at the strikethrough price on
07-01-2026

$2205.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Performance Ignition Coils - Set Of Four

ES#5338625 - 056059la08-4KT - ECS Performance Ignition Coils - Set Of Four - Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! - ECS - Audi Volkswagen

Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! 10X Entries For Our 25th Anniversary Sweepstakes!
For Vehicles with Engine Codes ATW and AEB (Bolt-In Style Ignition Coils)

Brand:
ECS - Corporate Logo
ES#:
5338625
Mfg#:
056059LA08-4KT
In Stock
ON SALE! SAVE 15%
$143.99

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

$122.37 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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