Air Suspension category referenceSpecial order · Estimated lead time: typically 2-4 weeks
09-16 Audi S4 - Airtech Pro Plus 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- Four application-specific air struts with 36-way damping and adjustable lower mounts
- Viair 444C compressor and air tank
- Digital manifold with full-colour OLED remote — four-corner independent control, no switches or gauges to wire
- 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-APP
Product details
Pro Plus swaps switches and gauges for a digital manifold and a full-colour OLED remote, giving four-corner independent control on the 2009-2016 Audi S4 AWD. There are no switches or gauges to wire, which makes the install simpler than the paddle-valve versions. Four application-specific struts with 36-way damping and adjustable lower mounts are included.
The single Viair 444C compressor can raise the car from lowest to maximum height in as little as four seconds. Leveling is automatic and pressure-based, and the OLED remote shows tank and bag pressure at all four corners. The included damping knob is the only tool needed for the 36 damping levels.
Bag design is sleeve-type or double-bellow depending on the OEM suspension, and ride height is fine-tuned at any pressure through the adjustable lower mount. Camber-adjustable top mounts are available on certain MacPherson-strut applications. Confirm fitment before ordering, and note that an Electronic Damping Cancellation kit is available for this application if your car has electronically regulated dampers.
Supported features
No switches or gauges and no complex wiring. The kit is operated from a single OLED color-screen remote that displays tank and bag pressure at all four corners.
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-APP
These page names share this MPN; they do not confirm fitment. Verify your vehicle before ordering.