XYZ Racing Tarmac Rally Coilovers — Audi S4 B6 4WD 2003-2004

Sealed-stage tarmac rally throws the B6 S4’s quattro platform at kerbs, camber changes and mid-corner surface breaks with none of the smoothing that a closed circuit gives you. The XYZ Racing Tarmac Rally coilover is built for that punishment on a 4WD chassis that’s already carrying a longitudinal V8 and a full-time all-wheel-drive system up front.

This is a stage-day setup, not a fast-road compromise. Where a road coilover has to soften off for comfort, this one is tuned to keep the S4’s nose planted and the rear axle following through repeated hard hits without the body chasing the surface underneath it.

What this coilover does for your 2003-2004 Audi S4

The B6 S4’s extra weight over the front axle, versus the standard A4, makes wheel control through compression events the difference between a car that tracks straight off a crest and one that pushes wide. This kit’s damping is built to absorb a big hit – a pothole, a rutted farm-track surface, a mid-stage lip – without kicking that energy back into the chassis, so the tyre stays loaded and traction doesn’t drop out mid-corner. Shock body movement is checked hard enough that the quattro system’s front-to-rear torque split can actually do its job instead of fighting body roll on top of a wallowing spring platform. Stage after stage of repeated jolts is where cheaper dampers fade; this is the scenario the internals are specifically valved for.

About the Tarmac Rally coilover

XYZ Racing designed this damper around one job: sealed-stage tarmac rally, where the road surface is real, uneven and unpredictable rather than a smoothed circuit line. The valving is set to soak up impacts from big compressions – kerbs, crests, broken tarmac edges – and stop that energy translating into body shock, which is what keeps the tyre’s contact patch doing its job when the car’s mid-slide. That control is what gives the car its planted, predictable turn-in and mid-corner feel rather than a nervous, unsettled one. All of the damping and spring settings on this kit come directly from XYZ Racing’s own tarmac rally programme, carried over rather than adapted from a road or track base, so the behaviour on loose-surface transitions and hard braking zones into a stage corner is built in rather than bolted on.

Fitment for the Audi S4 B6 4WD (2003-2004)

Built specifically for the Audi S4 B6 4WD, chassis code AU17-1, covering the 2003-2004 model years. Confirm your car matches this chassis code and drivetrain configuration before ordering, as the B6 platform spans multiple engine and driveline variants across its production run.

What buyers also search for

• Audi S4 B6 suspension setup for sealed-stage tarmac rally use
• Audi S4 B6 quattro coilover that holds its line over broken and cambered stage surfaces
• XYZ Racing Tarmac Rally damping tuned for repeated big-hit impacts, not just fast-road comfort
• Audi S4 B6 AU17-1 4WD coilover kit for competitive rally builds

Spec your S4 B6 for the stage – configure yours below.