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

The B7 S4 carries its 4.2 V8 ahead of the front axle and sends torque through a quattro centre diff to all four corners, which makes launching this car a different problem to a FWD or RWD platform: the challenge isn’t getting one axle to hook up, it’s getting weight onto whichever tyres are doing the work at the instant of launch. XYZ Racing’s Drag Racing coilover for the Audi S4 B7 is built around that specific problem rather than around cornering compliance or ride comfort.

This is a straight-line kit, not a track-day one. Where a road or circuit coilover is tuned to control body movement through a corner, this set-up is tuned to control weight transfer down the car in the first metre of a run – the moment a heavy, nose-biased AWD saloon either hooks up cleanly or spins off the line.

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

Fitted to the B7 S4, the kit lets you shift the car’s front-to-rear weight balance to suit how you’re putting power down off the line, rather than leaving the standard suspension’s road-biased geometry to fight the launch. That controlled transfer pushes load onto the tyres carrying torque at the moment it matters, which on a quattro car means less energy lost to wheelspin and more of it going into forward motion. The result is a car that settles into its launch stance instantly instead of wallowing on stock dampers, and holds that stance through the run rather than drifting off line as speed builds. None of this changes how the S4 behaves in daily traffic or on a b-road – it’s a dedicated adjustment for the strip, not a compromise you carry around the rest of the week.

About the Drag Racing coilover

XYZ Racing’s Drag Racing coilover is built specifically for 0-400m runs, and unlike a lot of drag suspension it’s designed to work across FWD, RWD and 4WD cars rather than one drivetrain layout. The core idea is deliberate: the set-up allows the car’s front and rear weight to be redistributed toward whichever wheels are doing the driving at that instant, rather than sitting at a fixed compromise front-to-rear split. That shift forces greater compression into the tyres actually transmitting torque, which cuts down the idle time a wheel spends unloaded and spinning before it finds grip. The practical effect on the strip is a car that plants harder off the line and holds its stability as speed climbs, instead of squirming as weight sloshes around uncontrolled. For a quattro platform like the B7 S4, that AWD-aware approach matters – the kit isn’t just a RWD drag spec adapted after the fact.

Fitment for the Audi S4 B7 (2004-2008)

This kit is built for the Audi S4 B7, chassis code AU20-2, in its quattro 4WD form across the 2004-2008 model years. Confirm your S4 is the AU20-2-generation B7 before ordering, as fitment is specific to this chassis and drivetrain configuration.

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Configure the Audi S4 B7 Drag Racing coilover for your car using the options below.