XYZ Racing Street Advanced Coilovers — Audi A6 C5 ALLROAD 4WD (OE FOR AIR STRUT) 1999-2005

The C5 Allroad left the factory riding on four-corner air suspension, and two decades on that system is the platform’s defining weakness – bags split, the compressor burns out, and the car drops onto its bump stops. The XYZ Racing Street Advanced coilover is built as a direct conversion for the Audi A6 C5 Allroad 4WD, swapping the OE air struts for a steel-sprung, height-adjustable setup that ends the leak-and-replace cycle for good.

This is the Street Advanced specification: a road-biased coilover with 720 ways of damping adjustment, aimed at owners who want a settled daily ride without giving up the option of a firmer setting for a quick B-road blast or a track day. For a heavy, nose-led quattro estate, that breadth of control matters more than it would on a lighter car.

What these coilovers do for your 1999-2005 Audi A6 C5 Allroad

The first thing you feel is consistency: a steel coil spring and a sealed damper hold their rate in a way a twenty-year-old air bag never will, so the car stops sagging overnight and sitting unevenly. You can set a fixed ride height to taste, dropping the slightly tall Allroad stance or keeping useful clearance for rough lanes. The 720-step damping range lets you run the front compliant enough to absorb broken Tarmac while firming the rear to settle the quattro driveline’s weight transfer under load. Body roll through a long sweeper is reined in, turn-in sharpens, and the nose stops floating over crests at motorway speed. For a car this size, the gain in composure is immediate.

About the Street Advanced coilover

XYZ Racing positions the Street Advanced as the most popular kit in its range, refined over several seasons of development by the company’s engineering team and validated in international competition before reaching production. It is built for normal road use and the occasional track day rather than dedicated circuit duty, which is exactly the brief most Allroad owners have. The headline feature is 720 ways of damping adjustment from a single knob, so you can move from a compliant daily setting to a tighter, more controlled one without touching the springs. That makes it easy to tune bump and rebound to the load you actually carry, whether the boot is empty or packed for a weekend away. XYZ calls it essential equipment for drivers who care about both speed and control, and on a 4WD estate that balance is the whole point.

Fitment for the Audi A6 C5 Allroad 4WD (1999-2005)

This kit is specified for the C5-generation A6 Allroad, chassis code AU29-3, across the full 1999 to 2005 production run. It is the correct version for cars originally fitted with the OE air strut system, replacing all four corners. Confirm your car runs the factory air setup before ordering, as that is the fitment this kit is cut for.

What buyers also search for

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The Street Advanced kit turns the Allroad’s biggest liability into a setup you control rather than one you keep repairing. Pick your spec and configure yours below.