XYZ Racing Street Advanced Coilovers — Audi S4 B7 4WD 2004-2008

The B7 S4’s quattro layout puts real weight over the front axle, and the factory dampers were tuned to soak that up rather than let a driver feel it. XYZ Racing’s Street Advanced coilover replaces that setup with a kit built for owners who want their B7 to respond on a B-road on Saturday and still be liveable on the M25 on Monday. It sits between a comfort-biased kit and a dedicated track setup, which is exactly where a fast-road quattro saloon needs to live.

Height and damping are both adjustable, so the ride can be set firm for a spirited drive or backed off for a long motorway run without swapping parts. For a car that’s carrying the extra mass of the quattro drivetrain up front, that range matters more than it would on a lighter, front-engine-only chassis.

What this coilover does for your 2004-2008 Audi S4 B7 4WD

Dropping the ride height and firming the spring rate tightens up the vague, wallowy transitions that stock B7 S4 dampers allow once the nose starts working under braking and turn-in. With 720 damping adjustment positions on hand, you can dial the compression and rebound to suit whether the car’s on daily commuter duty or being driven harder through a set of B-road sweepers, without the AWD system’s extra unsprung mass turning every input into a delayed response. Ride height adjustment lets you correct the factory’s slightly high stance, dropping the centre of gravity and sharpening turn-in on a chassis that’s always had to compromise between quattro hardware packaging and handling. The result is a B7 that changes direction with less roll and holds a line through faster corners with noticeably less of the nose-push that stock S4 owners know well. Because the damping range is wide, you’re not locked into a single ride quality – soften it off for the weekly commute, firm it up when the road opens out.

About the Street Advanced coilover

Street Advanced is XYZ Racing’s core coilover line, developed over several years and shaped by feedback from racing use across XYZ’s programmes worldwide. It’s built for the driver who splits their time between normal road use and the occasional track day, rather than one or the other exclusively. The headline spec is 720 damping adjustment positions, giving a far finer window to find the right compromise between comfort and control than a basic two-way or fixed-rate coilover offers. Construction and tuning are aimed at drivers who want genuine control over how the car responds to steering, braking and throttle inputs, not just a lower ride height for looks. It’s positioned as XYZ’s most broadly applicable kit – the one most owners land on when they want a coilover that can do everything from a school run to a track-day lapping session without feeling like a compromise in either direction.

Fitment for the Audi S4 B7 4WD (2004-2008)

This kit is built specifically for the Audi S4 B7 4WD, chassis code AU20-2, covering model years 2004 to 2008. The quattro-specific mounting and geometry on this application account for the AWD hardware the B7 S4 carries over the front-wheel-drive A4 of the same generation, so this is not a shared-fitment kit with the standard B7 A4.

What buyers also search for

• Audi S4 B7 suspension upgrade for road and occasional track use
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• Audi S4 B7 4WD damping setup for daily driving and B-road pace
• Street Advanced coilovers for Audi S4 B7 2004-2008
• Audi S4 B7 lowering kit with multi-way damping adjustment

Configure the Street Advanced kit for your B7 S4 below and pick the spec that matches how you actually drive it.