XYZ Racing Racing Spec Coilovers — Audi S1 SPORTBACK 8X (Modified Rear Integrated) 2014-2018

The Audi S1 Sportback is the only car in the A1 range built with a multi-link rear axle – a consequence of packaging the Haldex-based quattro driveline where the standard torsion beam normally sits. That dedicated rear geometry is exactly what a Racing Spec coilover is built to exploit, and this Modified Rr Integrated kit is machined to work with that layout rather than around it.

XYZ Racing’s Racing Spec coilover is the brand’s dedicated track and time-attack line. Fitted to the S1 Sportback, it gives a small, quattro-boosted hot hatch the front-to-rear balance to back up its 2.0 TFSI power on a circuit, not just in a straight line.

What this coilover does for your 2014-2018 Audi S1 Sportback 8X

The S1’s nose carries the weight of the EA888 2.0 TFSI and the front differential, and under trail braking into a fast corner that mass wants to keep travelling straight on. A Racing Spec setup stiffens and controls the front axle so the car turns in under braking rather than pushing wide. At the rear, the multi-link geometry this kit is built around lets you set camber and toe change through the stroke instead of accepting whatever the factory subframe gives you, which matters once you’re feeding Haldex quattro power down out of a slow corner. Ride height drops from the factory’s high-set stance to lower the centre of gravity, and the increased spring rates cut the body roll that costs contact patch on turn-in. None of this softens the S1’s rally-car namesake – it sharpens it for a car now spending its time on a circuit instead of a stage.

About the Racing Spec coilover

Racing Spec is XYZ Racing’s dedicated circuit-use line, built for competition rather than fast-road driving. The damping settings come from direct participation in circuit racing, including outings in the WTCC, rather than a bench-test spreadsheet. For cars carrying heavier modification – bigger brakes, aero, a stripped interior, or a genuinely competition-spec build – XYZ Racing will also produce a bespoke version of this damper: send over the specification of what’s been changed on the car and the circuit it’s aimed at, and the shock absorbers can be valved around that particular setup rather than a generic curve. On the S1 Sportback, that translates into a competition-spec unit built around the Modified Rr Integrated rear axle, stiff enough for a trackday tyre and adjustable enough to back off for a fast-road session between events.

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

This kit is built for the Audi S1 Sportback, chassis code AU43-1, across the 2014 to 2018 production run. It’s specified for the Modified Rr Integrated rear axle – the version of the car running a multi-link rear rather than a torsion beam – so confirm your S1 matches that rear-end configuration before ordering.

What buyers also search for

• Audi S1 Sportback 8X Racing Spec coilover kit built for genuine circuit and time-attack driving.
• Audi S1 8X quattro coilover damping developed from real circuit programmes, including WTCC competition.
• Audi S1 Sportback multi-link rear coilover setup for the Modified Rr Integrated rear axle.
• Custom-valved Audi S1 Racing Spec coilovers for heavily modified, competition-prepared builds.

Pick the spec that matches how hard you’re planning to drive the S1 and configure yours below.