XYZ Racing Top Sport Coilovers — Porsche 991 GT3 (without hydraulic lift system) (Cancellation Kit for Electronic Damping) 2013-2019

The XYZ Racing Top Sport coilover kit for the 991 GT3 replaces Porsche’s PASM electronic damping with a fixed, mechanically calibrated system – a deliberate move away from the factory’s adaptive approach towards a consistent, adjustable baseline. Designed for the 2013-2019 chassis, this cancellation kit removes the electronic damping control entirely, placing suspension behaviour back under direct physical control rather than software management.

Running 30-50% firmer damping than street settings, with spring rates sitting 2 kg/mm above road-use values, the Top Sport occupies the range most GT3 track-day drivers find effective. On a rear-engined car equipped with active rear-wheel steering, the relationship between spring calibration and chassis communication is tighter than on almost any other road car – the numbers here are not arbitrary.

What this coilover does for your 2013-2019 Porsche 991 GT3

Removing PASM changes the GT3 from a car that manages itself to one that tells you directly where it is. The firmer damping – at 30-50% above street spec – suppresses body movement under braking and reduces the oscillation through corner entry that can obscure the rear axle’s actual grip threshold. The 2 kg/mm increase in spring rate tightens the rear’s response to steering angle; on the 991 GT3, where rear-wheel steering amplifies the effect of suspension calibration on mid-corner balance, that matters on entry and exit alike. On the road between sessions, the damping absorbs large surface irregularities and road jolts without transferring the full impact through to the car’s body, supporting tyre contact across broken road sections rather than losing it momentarily.

About the Top Sport coilover

The Top Sport sits at the upper tier of XYZ Racing’s coilover range, with calibrations drawn from the brand’s track racing programme. Damping runs 30-50% above street-use values – a deliberate margin that reflects circuit demands where body control under sustained load matters more than surface compliance. Spring rates are set 2 kg/mm harder than road spec, providing the chassis stiffness required for lap work whilst retaining enough travel for road use on the drive to and from the circuit. The cancellation kit for electronic damping replaces the PASM module entirely, so the suspension operates as a passive mechanical system with no dependence on Porsche’s adaptive electronics. The setup targets track-day and aggressive driving use, with daily driveability preserved for the road legs that bookend a session.

Fitment for the Porsche 991 GT3 (2013-2019)

This kit is built for the Porsche 991 GT3 under chassis code PO17-C, covering both the 991.1 and 991.2 generations produced between 2013 and 2019. The "without hydraulic lift system" designation applies to cars not fitted with Porsche’s factory front axle lift option; owners of lift-equipped GT3s require a separate fitment variant. The cancellation kit for electronic damping replaces the PASM control and is specific to cars with that system installed – confirm your build specification before ordering.

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The GT3’s chassis is capable enough that the right coilover transforms rather than merely adjusts it – pick your spec and configure yours below.