XYZ Racing Street Advanced Coilovers — Audi A6 4B/C5 4WD 1997-2005

The A6 4B/C5 quattro carries its weight differently to a front-driver – the longitudinal engine and centre diff sit ahead of the front axle, and on the standard struts that mass shows up as dive under braking and a front end that settles late into a corner. Factory dampers on a car of this age have usually softened further still, so what was already a nose-heavy saloon starts to feel vague at the wheel long before the tyres run out of grip.

XYZ Racing’s Street Advanced coilover kit for the 4B/C5 4WD is built to put that weight back under control without turning a comfortable executive saloon into something punishing. It’s the brand’s most widely fitted kit for exactly this reason: usable on the daily commute, capable enough to take to a track day without needing a second set of dampers.

What this coilover does for your 1997-2005 Audi A6 4B/C5 4WD

With 720 damping settings on tap, you can wind the front end up firm enough to check the quattro platform’s natural nose-dive under hard braking, then back it off for a motorway run without touching ride height. Independent height adjustment lets you correct the factory rake that develops as these cars age and settle, and drop the centre of gravity slightly to sharpen turn-in on a chassis that was never built with cornering as the first priority. The result on the road is a front axle that loads up predictably rather than wallowing, and a rear end that stays planted through the sort of quick direction changes the standard suspension struggles to keep up with. Because the adjustment range is so wide, the same kit can sit in a comfort-biased setting for daily use and a firmer track setting for a circuit day, without swapping parts.

About the Street Advanced coilover

Street Advanced is XYZ Racing’s core dual-purpose kit, refined over several years of production and proven through use in racing programmes worldwide before being brought to market in this form. It’s built for owners who split their driving between normal road use and occasional track days rather than a car set up exclusively for one or the other. The signature feature is 720 discrete damping positions, giving a far finer band of adjustment than a handful of clicks either side of centre, so you can find a setting between "comfortable" and "controlled" rather than jumping between the two. Construction and adjustable ride height follow the same brief: a kit that a road-driven quattro saloon can live on every day, and that still has enough range in it to be taken seriously on a circuit.

Fitment for the Audi A6 4B/C5 4WD (1997-2005)

This kit is specced for the Audi A6 4B/C5 in its 4WD (quattro) configuration, built between 1997 and 2005, under XYZ Racing’s AU29-1 chassis reference. Confirm your car is the 4WD variant of the 4B/C5 generation before ordering, as front-wheel-drive A6s of the same era use a different kit.

What buyers also search for

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• XYZ Racing Street Advanced damping adjustment for a daily-driven quattro saloon
• Audi A6 4B height-adjustable coilovers for corrected ride stance
• Audi A6 C5 4WD suspension upgrade with fine-grained damping control

Pick your damping and ride height range for the A6 4B/C5 4WD below and configure yours to suit how you actually drive it.