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

The D4 A8L is a two-tonne luxury barge riding on air, and that is exactly the problem when the road surface stops being a German autobahn and starts being a closed-stage tarmac rally route. The XYZ Racing Tarmac Rally coilover replaces the factory adaptive air strut setup wholesale, swapping a comfort-tuned air spring for a steel-sprung, monotube-damped chassis that can actually take the hits a stage throws at it.

This kit is built for sealed-surface rally use in a long-wheelbase quattro A8 – a brief almost no aftermarket suspension house writes for. Crucially, the package includes the cancellation harness for the OE electronic damping, so the dashboard does not light up the moment the air system is unplugged.

What this coilover does for your 2010-2017 Audi A8L

The standard D4 A8L floats. On a rally stage, that float becomes pitch under braking, body roll on long sweepers, and an air system that simply cannot react fast enough to repeat compression hits over rippled tarmac. Switching to the Tarmac Rally damper plants the car. The chassis stops working against the driver and starts reporting back what the front tyres are doing on turn-in.

You get genuine bump absorption over kerbs and stage repairs without the secondary float that ruins commitment through the next corner. Body movement is controlled enough to keep the long wheelbase from pitching the nose into understeer mid-corner, and traction off the apex – critical with the quattro driveline putting power down through four contact patches – is markedly improved because the dampers are managing weight transfer rather than chasing it.

About the Tarmac Rally coilover

The Tarmac Rally is XYZ Racing’s sealed-stage damper, carrying every setting choice from the company’s own tarmac rally programme. The valving is built specifically to absorb the kind of single, sharp jolt you get crossing a drain cover or stage repair at speed – suppressing body shock without losing tyre contact on the rebound. That is the trade-off the kit is designed around: soak the hit, keep the tyre loaded, hold the line.

Construction is steel-sprung monotube to replace the original air strut entirely, with ride height and preload adjustable on each corner. The cancellation kit is the second piece of the puzzle – a plug-in harness that satisfies the D4’s electronic damping control module so the suspension warning stays off and the car drives normally on the road sections between stages. Everything in the kit reflects XYZ Racing’s own rally testing on closed tarmac stages.

Fitment for the Audi A8L (2010-2017)

This kit is built specifically for the long-wheelbase D4 A8L, chassis AU49-C, in quattro 4WD form running the OE adaptive air suspension, model years 2010 through 2017. The included cancellation harness addresses the factory electronic damping module – this is the variant to order if your car left Ingolstadt on air struts. Confirm your build is the 4WD long-wheelbase before configuring.

What buyers also search for

• Audi A8L D4 air suspension delete with electronic damping cancellation
• Audi A8L 4WD coilover conversion for closed-stage tarmac rally use
• D4 A8L quattro suspension upgrade that retains road driveability
• Audi A8L AU49-C 2010-2017 coilover with OEM warning-light bypass
• Tarmac Rally damping for long-wheelbase quattro saloons

Build the spec for your A8L below – corner ride heights, spring rates and the electronic damping cancellation are all configured in the options panel.