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Audi A4 Performance Parts & Upgrades

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BFI Audi B8 Complete Engine Mount - Stage 1 - Priced Each

ES#3991437 - EBFI708K001 - BFI Audi B8 Complete Engine Mount - Stage 1 - Priced Each - 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#:
3991437
Mfg#:
EBFI708K001
Ships on Dec 1, 2026
$369.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

IE Pro ECU Tune With POWERlink Cable For Audi B9 A4 2017-2020

ES#5457715 - IESOWG12 - IE Pro ECU Tune With POWERlink Cable For Audi B9 A4 2017-2020 - Unleash the potential of your build with the Pro version, adding Stage 2 support and aggressive features and high-torque files. - Integrated Engineering - Audi

Unleash the potential of your build with the Pro version, adding Stage 2 support and aggressive features and high-torque files. Please see "fitment notes" in the description for full vehicle information.

Brand:
Integrated Engineering - Corporate Logo
ES#:
5457715
Mfg#:
IESOWG12
In Stock
Starting at $184.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Clutch Kit - Stage 3+

ES#2576183 - SA783F - Clutch Kit - Stage 3+ - Features a full faced, carbon semi-metallic disc with a torque rating of 550ft/lbs - Spec Clutches - Audi

Features a full faced, carbon semi-metallic disc with a torque rating of 550ft/lbs

Brand:
Spec Clutches - Corporate Logo
ES#:
2576183
Mfg#:
SA783F
Ships in 4 Business Days
$739.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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 Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

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
$921.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Shocks & Struts Set - Heavy Duty

ES#1844098 - B5A4HDeV - Shocks & Struts Set - Heavy Duty - Performance shocks for OE springs - Bilstein - Audi

Performance shocks for OE springs 10X Entries Into Our F80 M3 Sweepstakes

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

Brand:
Bilstein - Corporate Logo
ES#:
1844098
Mfg#:
B5A4HDEV
Ships in 4 Business Days
$728.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Front Lip Spoiler - Audi B8.5 A4

ES#3191381 - 022651ECS01A - Carbon Fiber Front Lip Spoiler - Audi B8.5 A4 - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling 10X Entries Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

For standard (Non S-Line) bumpers only from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3191381
Mfg#:
022651ECS01A
Special Order: No Guaranteed ETA
$806.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#3175516 - 252560T - Cat-Back Exhaust System - 2.5" T-304 Stainless Steel exhaust system with single tip Borla muffler - Techtonics Tuning - Audi

2.5" T-304 Stainless Steel exhaust system with single tip Borla muffler For use with aftermarket 2.5" downpipe

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175516
Mfg#:
252560T
Ships on Dec 1, 2026
$726.00 USD
This product is lifetime replacement eligible Lifetime Replacement

EMD Wheel Spacers - 5mm (Pair)

ES#4430353 - EMD-SPACER-5-571 - EMD Wheel Spacers - 5mm (Pair) - Exclusively built for your 57.1mm centerbore VW/Audi - Emmanuele Design - Audi Volkswagen

Exclusively built for your 57.1mm centerbore VW/Audi

Brand:
Emmanuele Design - Corporate Logo
ES#:
4430353
Mfg#:
EMD-SPACER-5-571
In Stock
$40.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Wheel Spacer & Bolt Kit - 6mm With Conical Seat Bolts

ES#2568229 - ECS10610KTWBC - ECS Wheel Spacer & Bolt Kit - 6mm With Conical 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 USE CODE ECS20 IN CART FOR BEST PRICE
Please measure your hub protrusion to ensure it will still make contact with the center of the wheel. See

Brand:
ECS - Corporate Logo
ES#:
2568229
Mfg#:
ECS10610KTWBC
In Stock
ON SALE!
$89.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Mid Exact-Fit Stainless Steel Brake Lines

ES#3450991 - 024677ECS01 - Mid Exact-Fit Stainless Steel Brake Lines - Mid set of DOT-compliant lines for an improved pedal feel - ECS - Audi

Mid set of DOT-compliant lines for an improved pedal feel 10X Entries Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

Brand:
ECS - Corporate Logo
ES#:
3450991
Mfg#:
024677ECS01
In Stock
$93.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cold Air Intake Stage 1

ES#2192982 - CI100023 - Cold Air Intake Stage 1 - Looks as great as it performs - APR - Audi

Looks as great as it performs Call In Or Chat For Best Price!
CARB certified for sale in all 50 states

Brand:
APR - Corporate Logo
ES#:
2192982
Mfg#:
CI100023
EO#:
d-783-2
Back Ordered
11% off MSRP

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

$806.99

This product was last offered at the strikethrough price on
11-06-2026

$716.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Exact-Fit Stainless Steel Brake Lines

ES#8828 - ecs41010kt - Rear Exact-Fit Stainless Steel Brake Lines - Rear set of DOT-compliant lines for an improved pedal feel - ECS - Audi

Rear set of DOT-compliant lines for an improved pedal feel 10X Entries Into Our F80 M3 Sweepstakes USE CODE ECS20 IN CART FOR BEST PRICE

Up to VIN 8D-V-168350, split is in the 1997 model year

Brand:
ECS - Corporate Logo
ES#:
8828
Mfg#:
ECS41010KT
In Stock
$94.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Shocks & Struts - Koni Sports (Set Of Four)

ES#2219836 - 8040-1283SPORT - Shocks & Struts - Koni Sports (Set Of Four) - Add the legendary performance of Koni shocks and struts to your Audi - Koni - Audi

Add the legendary performance of Koni shocks and struts to your Audi

Brand:
Koni - Corporate Logo
ES#:
2219836
Mfg#:
8040-1283SPORT
In Stock at Vendor
ON SALE! SAVE 20%
$882.99

This product was last offered at the strikethrough price on
10-31-2026

$705.63 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Rear Differential Mount Upgrade

ES#2966690 - 034-505-2019 - Billet Aluminum Rear Differential Mount Upgrade - Installation is very simple, can be performed in minutes, and is completely reversible. - 034Motorsport - Audi

Installation is very simple, can be performed in minutes, and is completely reversible. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
2966690
Mfg#:
034-505-2019
Ships in 3 Business Days
$117.00 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.

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