XYZ Racing Street Advanced Coilovers — Audi A8L 4WD (OE FOR AIR STRUT) 2010-2017

The D4 A8L is a luxury barge that hides nearly two tonnes of aluminium and quattro hardware behind its long-wheelbase silhouette, and the factory air suspension is the system that masks it. When those struts start sagging, leaking or throwing fault codes at 80,000 miles, owners face a choice: replace the air units at OE prices and wait for the next failure, or convert to a properly engineered coil-over setup that fits the original mounting points. The XYZ Racing Street Advanced is built for exactly that second path.

This is the street-biased option in the XYZ range, set up for an A8L that still has to behave like an A8L. The long wheelbase, the rear-passenger ride quality, the soft initial stroke that a Vorsprung-spec saloon needs at low speed – all of it is preserved, while pitch under braking and roll through faster B-roads tighten up considerably.

What this coilover does for your 2010-2017 Audi A8L 4WD

Swapping the D4’s air struts for the Street Advanced changes the character of the car in three places you feel immediately. Initial compliance over expansion joints stays soft because the spring rates have been chosen for a heavy long-wheelbase saloon, not a hot hatch. Mid-corner body roll drops sharply, which matters in a car this long where the rear axle is a long way behind you and used to feel detached from steering inputs. Squat under hard quattro launches and dive under heavy braking are pulled into line, so the nose stays level when you lean on the brakes from motorway speeds. The 720-way damping range means you can soften the kit for long M-way runs and firm it up when the road opens out, all from the adjuster on top of each unit.

About the Street Advanced coilover

Street Advanced is XYZ Racing’s most widely specified kit and the one the factory has refined over the longest production run, with development driven through years of testing by XYZ race teams worldwide before being tuned back down for road use. Each strut runs 720 separate damping settings on a single combined bump-and-rebound adjuster, which is the headline number but also the practical one – it gives genuinely usable resolution between full-soft and full-firm rather than a handful of vague clicks. Construction is a heavy-duty steel body with corrosion-resistant plating, paired with linear-rate springs matched to the D4’s kerb weight. The brief XYZ writes for this series is normal road use and the occasional track day, which on a car like the A8L translates to a kit that lifts handling without breaking the long-distance comfort that buyers paid for in the first place.

Fitment for the Audi A8L (2010-2017)

This kit is built for the long-wheelbase D4 A8L chassis code AU49 across the 2010 to 2017 production run, and is specifically the OE-replacement spec for cars originally fitted with air suspension struts. It bolts to the factory mounting points front and rear with no chassis modification.

What buyers also search for

• Audi A8L D4 air suspension replacement coilover conversion
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• D4 A8L long-wheelbase coilover that preserves rear-passenger ride quality
• AU49 chassis suspension upgrade with OE-position mounting
• Audi A8L coilover with 720-way damping for fast-road tuning

Configure your Street Advanced spec for the A8L below.