S4 Avant

Raise the level of style on your B9 A4 S-Line or S4 with the ECS Tuning gloss black front lip spoiler. This quality piece was engineered and designed in-house to fit directly to your factory front bumper to provide a much more aggressive visual...

Cool, sharp and positive changes are guaranteed from our replacement S-Tronic blades for Audi B9 A4/S4. The new billet aluminium blades, unlike cheaper alternatives, completely replace the standard paddles. Look great, feel great with precision shifting...

PRODUCT DESCRIPTION Definition of a front splitter - Front splitters are essential aerodynamic components that serve to balance the front vs. rear distribution of downforce. A splitter is typically found on the front-end of a race car,...

Looking to increase the reliability and integrity of your oil filter housing, and spruce up your engine bay as a bonus? The 034Motorsport Billet Oil Filter Housing for EA839 2.9T & 3.0T Engines is designed to replace your factory plastic oil...

034Motorsport's Carbon Fiber Radiator Cover for the B9 Audi A4/S4 is designed to tastefully complement the factory engine bay with a beautiful carbon fiber weave that is perfectly matched to our X34 Carbon Fiber Audi B9 S4 Air Intake. This genuine carbon...

The 034Motorsport Motorsport Stainless Steel Tow Hook for Audi MQB/B8/B8.5/B9 and Volkswagen MQB vehicles is engineered to not only be the best looking tow-hook on the market, but the strongest, easily able to drag cars out of the deepest gravel traps...

APR Ignition Coil APR Ignition Coils are designed to be a direct plug-and-play upgrade to factory coils, and provide greater energy output, ensuring a stronger and more consistent spark. The commonplace replacement of factory ignition coils with those...

The APR Intercooler System is a massive front mounted upgrade that dramatically reduces intake air temperature (IAT), minimizes heat soak, and provides increased performance! The system is an easy to install, direct bolt-on design, that is recommended...

The details matter!  Dress up your engine bay by removing the cheap and generic plastic cap and replacing it with a full billet cap - not just an overlay.  Designed and engineered in-house by ECS Tuning, this precision machined billet aluminum cap is...

The details matter!  Dress up your engine bay by removing the cheap and generic plastic cap and replacing it with a full billet cap - not just an overlay.  Designed and engineered in-house by ECS Tuning, this precision machined billet...

The details matter!  Dress up your engine bay by removing the cheap and generic plastic cap and replacing it with a full billet cap - not just an overlay.  Designed and engineered in-house by ECS Tuning, this precision machined billet aluminum cap is...

Upgrade your exterior styling with the ECS Tuning Carbon Fiber Trunk Spoiler. This trunk spoiler was engineered in-house and designed to follow the curves and lines of the body to offer a more aggressive look that matches the factory appeal of the B9...