Air Suspension category referenceSpecial order · Estimated lead time: typically 2-4 weeks
09-16 Audi S4 - Airtech Deluxe Air Suspension
Choose year, make and model to confirm this application-specific product fits — you can add it to your cart either way.
Verify fitment- Everything in the Basic system: four air struts, Viair 444C compressor, air tank, paddle valves and gauge
- Two electronic switches for precise control over the paddle valves
- Wireless remote control
- Quick-disconnect plug, all hoses, wiring and installation manuals
- Damping adjustment knob
One approved application: 2009–2016 Audi S4 · B8 · AWD
Choose an available option for each required item to enable Add to cart: Electronic Damping Option. Options marked “Contact for quote” require a KSport quote and cannot be added directly.
- Ships from Mesa, AZ
- 12-month limited warranty
- Special order: typically 2-4 weeks
Specifications — CAU261-ADX
Product details
Deluxe builds on the Basic package for the 2009-2016 Audi S4 with AWD, adding two electronic switches for precise control of the paddle valves and a wireless remote. Four 36-way air struts, a Viair 444C compressor, an air tank and all the wiring come along. It suits an owner who wants remote ride-height changes without a full digital setup.
The quick-disconnect plug keeps the install tidy: route the air lines to the box, connect four wires to the plug, wire the compressor and relay, and the system is ready. The remote adjusts ride height from outside the car. Each strut also has an adjustable lower mount for fine tuning at any pressure, and its 36 damping levels are set with the included knob.
Compare Deluxe with Basic and Pro Plus before you order, since the management level is a separate part number for this vehicle. The same system is also listed for 2009-2016 Audi A4 AWD models. Camber-adjustable top mounts are available on certain MacPherson-strut applications, and a technician can confirm whether your car qualifies.
Supported features
Run the air lines to the box, connect four wires to the quick-disconnect plug, wire the compressor and relay, and you are done. The included remote adjusts ride height from outside the vehicle.
36 levels of damping adjustment on every strut using the included damping knob.
Sleeve-type and double-bellow bags engineered to match the vehicle and its OEM suspension design.
Fine-tune ride height at any pressure through the adjustable lower mount.
The single 444C can raise the car from lowest to maximum height in as little as four seconds.
Available on certain MacPherson-strut applications.
Compatible applications (2)
Choices for this system
Basic (paddle valves and gauge), Deluxe (electronic switches and remote), Pro Plus (OLED remote, four-corner control) and Executive (adds height sensors and auto-leveling) are separate part numbers for this vehicle; compare them on the Air Suspension page.
Available on certain MacPherson-strut applications; ask a technician whether they apply to this vehicle.
Installation
Bolt-on struts with supplied hoses, wiring and manuals; professional installation is recommended. Recheck the system after the first 500 miles or one month; to check for leaks, inflate to 70 psi and spray each fitting with soapy water.
Air suspension setup and careWarranty & service
12-month limited warranty to the original purchaser against defects in materials and workmanship. Racing use, exterior finish and improperly installed or modified parts are not covered; keep your original invoice for any claim.
Warranty terms and service requestsOther published pages for MPN CAU261-ADX
These page names share this MPN; they do not confirm fitment. Verify your vehicle before ordering.