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Audi A4 Performance Parts & Upgrades

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Carbon Fiber Rear Diffuser - Audi B8 A4

ES#3194430 - 022851ECS01 - Carbon Fiber Rear Diffuser - Audi B8 A4 - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling 10X Entries For Our 25th Anniversary Sweepstakes!

Fits standard (Non S-Line) Sedan & Avant bumpers up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3194430
Mfg#:
022851ECS01
Special Order: No Guaranteed ETA
ON SALE! SAVE 15%
$921.99

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

$783.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 2 Clutch Kit

ES#2570171 - SA5923 - Stage 2 Clutch Kit - Offers more holding power with a full faced, pure Kevlar disc with steel backing - Spec Clutches - Audi

Offers more holding power with a full faced, pure Kevlar disc with steel backing

Brand:
Spec Clutches - Corporate Logo
ES#:
2570171
Mfg#:
SA5923
Back Ordered
$773.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

CTS Transmission Mount Insert

ES#3410473 - CTS-HW-0249 - CTS Transmission Mount Insert - Eliminate excess drivetrain slop and movement without additional NVH - CTS - Audi

Eliminate excess drivetrain slop and movement without additional NVH

Brand:
CTS - Corporate Logo
ES#:
3410473
Mfg#:
CTS-HW-0249
Back Ordered
ON SALE! SAVE 20%
$59.99

This product was last offered at the strikethrough price on
07-10-2026

$47.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

1145 Sport Suspension Kit

ES#3218930 - 1145 1126 - 1145 Sport Suspension Kit - Features Eibach Sport Springs and Koni Sport shocks for maximum street or track performance! - Koni - Audi

Features Eibach Sport Springs and Koni Sport shocks for maximum street or track performance! Fits sedan models only

Brand:
Koni - Corporate Logo
ES#:
3218930
Mfg#:
1145 1126
Ships in 5 Business Days
ON SALE! SAVE 20%
$958.99

This product was last offered at the strikethrough price on
06-22-2026

$766.56 USD
This product is lifetime replacement eligible Lifetime Replacement

BFI B8 Engine Mount Kit (W/Trans Insert) - Stage 2

ES#3991436 - BFI8KSTG2-KIT - BFI B8 Engine Mount Kit (W/Trans Insert) - Stage 2 - Total solution for replacing and upgrading your notoriously weak stock engine mounts for your B8 / B8.5 Audi. - Black Forest Industries - Audi

Total solution for replacing and upgrading your notoriously weak stock engine mounts for your B8 / B8.5 Audi.

Brand:
Black Forest Industries - Corporate Logo
ES#:
3991436
Mfg#:
BFI8KSTG2-KIT
Ships on Aug 20, 2026
$759.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High-Flow Charge Pipe Kit

ES#5457149 - IETPCK7 - High-Flow Charge Pipe Kit - Flow without limits: The ultimate bolt-on upgrade for Audi B9 power, sound, and reliability. - Integrated Engineering - Audi

Flow without limits: The ultimate bolt-on upgrade for Audi B9 power, sound, and reliability. 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
5457149
Mfg#:
IETPCK7
Ships in 4 Business Days
$379.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Shocks & Struts Set - Sport

ES#652 - B5A4QBSC - Shocks & Struts Set - Sport - Recommended for vehicles with lowering springs - Bilstein - Audi

Recommended for vehicles with lowering springs 2X Entries For Our 25th Anniversary Sweepstakes!

Up to VIN 8D-1-030000, split is in the 2001 model year

Brand:
Bilstein - Corporate Logo
ES#:
652
Mfg#:
B5A4QBSC
Ships in 3 Business Days
$756.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Shocks & Struts Set - Heavy Duty

ES#1844097 - b5a4hdlv - Shocks & Struts Set - Heavy Duty - Performance shocks for OE springs - Bilstein - Audi

Performance shocks for OE springs 2X Entries For Our 25th Anniversary Sweepstakes!

From VIN 8D-1-030000, split is in the 2001 model year

Brand:
Bilstein - Corporate Logo
ES#:
1844097
Mfg#:
B5A4HDLV
Ships in 3 Business Days
$756.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DRA Series Wheel Spacer - 30mm (Pair)

ES#5112 - 6055571 - DRA Series Wheel Spacer - 30mm (Pair) - Fine tune your stance and improve handling - H&R - Audi Volkswagen

Fine tune your stance and improve handling 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
5112
Mfg#:
6055571
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.

$209.99

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

$188.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Wheel Spacer Pair - 20mm

ES#3618561 - 034-604-7008 - 034Motorsport Wheel Spacer Pair - 20mm - 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#:
3618561
Mfg#:
034-604-7008
In Stock
$125.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Front Lip Overlay - Audi B9 A4/S4

ES#3220704 - 022539ECS01 - Carbon Fiber Front Lip Overlay - Audi B9 A4/S4 - Add a subtle touch of carbon fiber to your B9 A4/S4 front bumper - ECS - Audi

Add a subtle touch of carbon fiber to your B9 A4/S4 front bumper 10X Entries For Our 25th Anniversary Sweepstakes!

For S-Line models only. Fits up to 2019 model year with *pre-facelift* front bumpers

Brand:
ECS - Corporate Logo
ES#:
3220704
Mfg#:
022539ECS01
In Stock
ON SALE! SAVE 49%
$243.99

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

$125.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Mount Intercooler Kit - For Big Turbo

ES#3142475 - CTSB6A4FMIC600BT - Front Mount Intercooler Kit - For Big Turbo - Decrease heatsoak with this front mount intercooler - CTS - Audi

Decrease heatsoak with this front mount intercooler

Brand:
CTS - Corporate Logo
ES#:
3142475
Mfg#:
CTSB6A4FMIC600BT
Ships in 7 Business Days
$749.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Mount Intercooler Kit - For K03

ES#3046115 - CTSB6A4FMICKIT - Front Mount Intercooler Kit - For K03 - Decrease heatsoak with this front mount intercooler - CTS - Audi

Decrease heatsoak with this front mount intercooler

Brand:
CTS - Corporate Logo
ES#:
3046115
Mfg#:
CTSB6A4FMICKIT
Ships in 7 Business Days
$749.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 1 Performance Chip - With Program Switching (Fully Loaded)

ES#5237 - 20TSTG1CHIP-4 - Stage 1 Performance Chip - With Program Switching (Fully Loaded) - Average gain of 40 HP & 75 LB-FT torque on 93 octane program! - APR - Audi

Average gain of 40 HP & 75 LB-FT torque on 93 octane program! Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade can be performed via our Chip & Ship method or the vehicle can be brought to ECS Tuning's fa
Ship your ECU for free, or drive your vehicle to our location

Brand:
APR - Corporate Logo
ES#:
5237
Mfg#:
20TSTG1CHIP-4
In Stock
$749.98 USD
Free Shipping
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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Manufacturer names and/or part numbers are used only for identification purposes.

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