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

The 8X S1 Sportback puts 231bhp through all four corners of a car that started life as an A1, and the quattro hardware means the standard rear axle carries electronic damper control that most aftermarket coilovers simply can’t talk to. This Circuit Master kit is built specifically around that reality, with the rear integration modified and a cancellation kit included so the factory electronics stop fighting a manual damper. For an S1 owner chasing repeatable circuit times, that’s the difference between a kit that bolts on and one that actually works with the car’s electrical architecture.

Circuit Master is XYZ Racing’s top-tier line, built for sustained lap-time work rather than a single fast run. On a small, stiff-chassised car like the S1, that matters: the quattro system’s extra driveline mass sits low and rearward, and a kit tuned for consistency under repeated heat cycles keeps the platform predictable from the first lap to the last.

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

With the rear damping cancellation kit fitted, the S1’s electronic dampers are taken out of the loop entirely, so the Circuit Master units control ride and body movement without the factory ECU trying to override them mid-corner. That removes a layer of unpredictability that catches out S1 owners who fit coilovers without addressing the rear integration properly. The 9720-way adjustment range covers everything from a firmer fast-road setting to a full circuit configuration, letting you tune compression and rebound independently as track conditions or tyre choice change. Because the AWD S1 loads all four corners under acceleration, having genuine control over each corner’s damping – not just spring preload – is what lets you use that traction without the chassis feeling unsettled over kerbs and mid-corner bumps.

About the Circuit Master coilover

Circuit Master sits at the top of XYZ Racing’s range, developed and run by XYZ’s own racing teams across international circuits as the core damper for competition builds. The headline figure is 9720 individual adjustment combinations, delivered through three external knobs that separate the damping circuits so compression and rebound can be set independently rather than as a single combined dial. The knobs use a small-oil-hole design; running over sizeable kerbs or bumps can produce minor noise from the oil passing through that restricted passage, which is a normal characteristic of the valving rather than a fault, and it’s a trade-off XYZ accepts because the same design is what lets the damper resolve such a wide adjustment range. It’s a monotube-style circuit setup built for repeated hard use on track rather than occasional fast-road driving, which is why it carries the cancellation kit needed to work properly on cars like the S1 with active rear damping.

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

This kit is built for the 8X-chassis S1 Sportback produced from 2014 to 2018, with the rear specifically engineered around modified integration for cars fitted with electronic damping – the included cancellation kit disables that factory system so the Circuit Master units run under manual control. Confirm your S1 has the factory electronic damping option before ordering this variant rather than the standard rear-integrated kit.

What buyers also search for

• Audi S1 Sportback coilovers compatible with factory electronic damper control
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• Audi S1 Sportback quattro coilover kit for track day and sprint use
• Audi S1 electronic damping cancellation kit for aftermarket coilovers
• Audi S1 8X Circuit Master damper setup for repeat lap sessions

Get the rear integration and cancellation kit matched correctly to your S1’s electronic damping setup – configure yours below.