XYZ Racing Circuit Master Coilovers — Porsche 991 GT3 RS (without hydraulic lift system) (Cancellation Kit for Electronic Damping) 2016-2026

The 991 GT3 RS arrives from Zuffenhausen as one of the most track-committed road cars in production – PASM electronic dampers, rear-engine weight bias, and a chassis built to be pushed hard. But PASM is a variable system, engineered to span conditions from fast B-road to full track mode within a single damping map. For sustained circuit use where the surface is known and the objective is repetition, that variability works against you. The XYZ Racing Circuit Master coilover for the Porsche 991 GT3 RS (2016-2026) replaces the electronic damping entirely through an included cancellation kit, returning full mechanical control to the driver.

This is a coilover built for sustained lap-time work. Not for the occasional open-pit-lane session, but the kind of repeated circuit use where adjusting front-end compliance between runs has a measurable effect on what the 991 does in late-braking zones and on the throttle out of slow corners.

What this coilover does for your 2016-2026 Porsche 991 GT3 RS

With the engine sitting behind the rear axle, the 991 GT3 RS carries a rear-biased weight distribution that can produce abrupt trailing-throttle rotation if rear damping isn’t set with precision. That sensitivity to setup is felt sharply in the rear axle’s behaviour under load – which is exactly why mechanical adjustability matters more here than on a mid-engined or front-engined platform. Across three independent adjustment knobs, the Circuit Master provides 9720 discrete combination settings – enough resolution to address front-end turn-in, mid-corner balance, and rear stability as separate, addressable variables. Removing PASM also removes the latency and interpretation layer between driver inputs and suspension response, making the car’s reaction to setup changes readable and consistent across sessions.

About the Circuit Master coilover

The Circuit Master is XYZ Racing’s circuit-focused coilover line, positioned within a competitive family alongside Racing Spec, Drift Spec, and Tarmac Rally variants – each a distinct discipline specialisation sharing the same core construction approach. Three independent damper adjustment knobs generate 9720 combination settings, a figure reflecting the breadth of adjustment range validated through testing with XYZ Racing’s own competition teams on international racing circuits. The internal construction uses a small-bore oil passage; in the specific condition of a sharp, high-magnitude input – the kind a circuit car rarely encounters on track – the oil moving through this restricted channel can produce a minor audible note under load. This is a characteristic of the damper construction, not a mechanical fault, and is a non-event on the smooth surfaces the kit is designed to operate on. The included PASM cancellation kit allows installation without triggering electronic damping fault codes or conflict with the factory control system.

Fitment for the Porsche 991 GT3 RS (2016-2026)

This kit covers the Porsche 991 GT3 RS on chassis code PO13-C, across the 2016 to 2026 production run. The fitment is for cars without the factory hydraulic front-axle lift system; if your 991 GT3 RS has the nose-lift option fitted, this application is not correct for your car. The PASM cancellation kit is supplied to handle the conversion from electronic to fully manual damping control.

What buyers also search for

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Configure your spring rates and damper settings for the 991 GT3 RS below.