XYZ Racing Circuit Master Coilovers — Audi A8L 4WD (OE FOR AIR STRUT) (Cancellation Kit for Electronic Damping) 2010-2017

The D4 A8L is a 5.27-metre, two-tonne luxury saloon riding on adaptive air struts from the factory, which is exactly why the conversion case for a coilover is so specific. Air bags deflate, the compressor packs up, and the dealer quote arrives. The XYZ Racing Circuit Master coilover for the 2010-2017 A8L 4WD replaces the entire factory air-strut system on this long-wheelbase chassis and pairs it with the cancellation kit that quietens the dashboard light tied to the electronic damping module.

That makes this a serious answer to a serious problem: keeping a long-wheelbase quattro saloon on the road for another decade, with handling that is genuinely better than the brittle, slightly remote feel the original adaptive setup delivered when new.

What this coilover does for your 2010-2017 Audi A8L

The Circuit Master swaps the D4’s failure-prone air struts for a fully adjustable mechanical coilover, so the car sits at a height you choose rather than the height the compressor can still manage. Ride height comes down without the cartoon drop that ruins a long-wheelbase silhouette, and the damping is set up to control the considerable mass that the 4.0 TFSI or 4.2 TDI plant ahead of the front axle. The cancellation kit is wired into the loom so the electronic damping warning never triggers, which means MOTs and dashboards behave as they should. Body control under load is the most obvious gain – this is a car that previously floated on its air, and now it works the contact patch properly through faster sweepers and motorway lane changes.

About the Circuit Master coilover

The Circuit Master is the top of the XYZ Racing competition catalogue, sitting alongside the firm’s Racing Spec, Drift Spec, and Tarmac Rally builds. It uses a three-knob adjuster layout that opens up 9720 distinct damper settings across bump and rebound, which is far more granularity than the chassis strictly needs but useful on a long-wheelbase car where front and rear behaviour are working against very different geometry. The damper uses a small-passage oil design tuned for sustained circuit work, which is why XYZ note that very large impacts can produce a small audible cue as oil moves through the metering passages – normal behaviour for the type and a fair trade for the control it delivers on smoother surfaces. The platform has been developed by XYZ’s race teams internationally, with the Circuit Master line specifically tested across international circuits over a long development cycle.

Fitment for the Audi A8L 4WD (2010-2017)

Chassis code AU49-C, covering the D4-generation A8L 4WD models from 2010 to 2017. This kit is built specifically for cars that left the factory on the OE air-strut setup, and the included cancellation module addresses the electronic damping fault code that would otherwise appear once the original system is removed.

What buyers also search for

• Audi A8L D4 air-to-coilover conversion for owners keeping the long-wheelbase car past its air-strut lifespan
• A8L 4WD adjustable suspension that retains a usable ride height for a daily quattro saloon
• D4 A8L coilover with cancellation kit so the dashboard warning stays off after the adaptive damping is removed
• Circuit Master damping for a long-wheelbase Audi running occasional track sessions alongside road use
• A8L 2010-2017 coilover options where the original Audi air-strut quote is no longer commercially sensible

Spec to your weight balance, drivetrain, and how often this A8L sees a circuit – configure yours below.