XYZ Racing Gravel Rally Coilovers — Audi S1 SPORTBACK 8X (Modified Rear Integrated) (Cancellation Kit for Electronic Damping) 2014-2018

The S1 Sportback’s Haldex-based quattro system shuffles drive rearward the instant the front axle breaks traction, and on a loose gravel stage that handover happens constantly – over crests, through braking bumps, out of hairpins where the car is still settling from the last compression. A road-biased damper runs out of ideas here fast; it either blows through its stroke on the second big hit or turns harsh enough to unsettle the diff’s torque split when you need the chassis planted.

XYZ Racing’s Gravel Rally coilover is built for exactly that scenario, not for smoothing out a B-road. It’s the spec to fit if the S1 is stage-bound or living a second life on rallycross gravel, where ride height, stroke, and spring rate all have to survive repeated abuse rather than one clean lap.

What this coilover brings to your 2014-2018 Audi S1 Sportback

Swap onto the 8X and the first thing you’ll feel is how much more of the wheel travel is usable before the damper starts fighting you – the long stroke soaks up the compression-rebound cycle of rutted gravel instead of transmitting it straight into the nose-heavy front axle. That matters on the S1 specifically because the transverse 2.0 TFSI already loads the front end hard under braking into a stage corner; a damper that controls that mass transfer without pogo-ing keeps the quattro system’s rear torque delivery working with the chassis instead of against it. The spring rates are set up for sustained high-speed running over broken surfaces rather than a single smooth apex, so the S1 stays composed through consecutive compressions where a road-spec kit would be pumping up and losing contact patch. You get a ride height and setup built to be adjusted for stage conditions – sand, snow, or loose shale – rather than one fixed compromise.

About the Gravel Rally coilover

This is the damper XYZ Racing builds specifically for rally and rallycross use, where the road surface is the most punishing condition the range covers – which is why the shock absorber itself becomes the single most important part on the car. It uses an inverted tube design so the unit can be tuned across genuinely different terrain, whether that’s sand, snow, or loose silt, rather than assuming one uniform gravel surface. Stroke length and spring length are both extended well beyond the road-going ranges, giving the damper room to absorb chassis vibration and the aggressive hits that come from running at speed over broken, bouncy ground, and to hold the car together under the extreme G-loads generated mid-corner. Every spring rate offered in this range has been set and proven by an actual rally racing team rather than calculated on a bench, so the numbers reflect what actually survives a stage rather than a lab estimate.

Fitment for the Audi S1 Sportback 8X (2014-2018)

This kit is built to chassis code AU43-1-C, covering the S1 Sportback across its full 2014-2018 production run, in the modified rear-integrated configuration. Because the donor car’s rear end has been reworked for this fitment, the kit ships with the cancellation kit needed to remove the factory electronic damping control so the car doesn’t fault on the dash once the OE units are gone.

What buyers also search for

• Audi S1 Sportback suspension setup for gravel rally and rallycross stages.
• Audi S1 quattro coilover damping that holds its rates through repeated rough-surface hits.
• AU43-1-C fitment coilover kit for the 2014-2018 Audi S1 Sportback 8X.
• Gravel Rally coilover options for Audi S1 owners moving off tarmac.

Spec out ride height, stroke, and spring rate for your S1’s stage or rallycross programme – configure yours below.