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

The C5 Allroad left the factory on a four-corner air suspension that was clever when new and a liability two decades on. This XYZ Racing coilover kit is the direct conventional-strut answer – it replaces the failing air bags and adaptive struts with steel springs and rebuildable dampers, ending the cycle of warning lights, overnight sag and four-figure OE replacement bills.

Built specifically for the air-strut Allroad (chassis AU29-3, 1999-2005), it converts the raised quattro estate to a fixed, adjustable ride height you set once and trust. Choose the spec that matches how you actually use the car, from fast-road compliance through to circuit-focused control.

What this coilover does for your 1999-2005 Audi A6 C5 Allroad

Convert the Allroad to coilovers and the first thing you notice is that every corner sits where you left it – no compressor cycling, no limp-home ride height, no morning slump. Mechanical height adjustment lets you bring the tall factory crossover stance down to something that suits the road, while proper spring and damper control reins in the body roll and float the soft OE air setup always carried. With the heavy 2.7T or 4.2 V8 sitting over the front axle, the firmer front-end support sharpens turn-in and steadies the nose under braking. Several specs in the range offer adjustable damping, so you can run a supple setting on broken tarmac and stiffen up for loaded touring or track work.

About the XYZ Racing coilover range

This fitment is offered as a family of XYZ Racing coilover specifications rather than a single kit, so you build around your use case. Super Sport and Top Sport sit at the spirited-road end, balancing ride quality against tighter body control. Racing Spec and Circuit Master move towards the track, with stiffer rates and a focus on repeatable control under sustained load. Tarmac Rally and Pro Rally are aimed at stage and mixed-surface work, while Drift Spec prioritises steering angle and rear-end behaviour. Every variant swaps the original air struts for a conventional threaded-body coilover, giving you mechanical ride-height adjustment in place of the electronically managed OE system. Match the spec to the surface and the duty cycle the car genuinely sees.

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

This kit is cut for the C5 Allroad (chassis code AU29-3) built between 1999 and 2005, specifically the 4WD quattro variant that ran the factory air suspension. As an OE-for-air-strut conversion, it is intended for cars originally fitted with the adaptive air system rather than steel-sprung models. Confirm your chassis code before ordering.

What buyers also search for

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Pick your Allroad spec, set your ride height and leave the air-suspension headaches behind – configure yours below.