XYZ Racing Circuit Master Coilovers — Porsche 997 TURBO CARRERA-4 (Cancellation Kit for Electronic Damping) 2005-2011

The 997 Turbo’s PASM-controlled dampers were calibrated to manage a rear-engine, AWD platform across a wide operating spectrum – motorway composure one hour, Nordschleife aggression the next. On a dedicated circuit, that spectrum collapses into irrelevance. The adaptive system cycles through damper states as the chassis loads mid-corner and unloads on exit, introducing inconsistency at precisely the moments when a driver needs certainty.

This XYZ Racing Circuit Master coilover kit for the Porsche 997 Turbo Carrera-4 (2005-2011) ships with the electronic damping cancellation hardware that silences PASM fault codes, removing adaptive interference from the equation entirely. On a platform where rear-biased mass and four-wheel traction combine to produce a driving experience that rewards precise inputs, consistent and controllable damper behaviour underpins everything else.

What this coilover does for your 2005-2011 Porsche 997 Turbo Carrera-4

The 997’s rear-engine architecture places considerable mass behind the axle – a weight distribution that rewards careful spring rate balance front to rear. Too much rear stiffness and the car becomes reactive under trail braking; find the right pairing and that same mass contributes to natural rotation on corner entry. Three independent adjustment knobs deliver 9,720 distinct setup combinations, covering the range from a composed fast-road baseline to a tighter circuit configuration without hardware changes between sessions. Ride height adjustment runs in parallel, allowing you to exploit the Turbo’s low centre of gravity without sacrificing ramp angles on road access sections.

About the Circuit Master coilover

The Circuit Master sits at the top of XYZ Racing’s competition-oriented coilover range, sharing lineage with Racing Spec, Drift Spec, and Tarmac Rally variants. Validated through XYZ’s own race teams across international circuits, the design is built for sustained, high-load use rather than occasional track appearances. Three knobs govern different aspects of damper behaviour, and the combinatorial range of those adjustments extends to 9,720 configurations – sufficient to establish distinct baselines for different circuits and driving styles without substituting components between events.

The internal architecture uses a constrained-orifice design that produces precise, graduated damping response at circuit speeds. On road surfaces with sharp, sudden irregularities – deep potholes, level crossings, drain covers – the restricted oil passage can generate a brief mechanical knock. This is a known characteristic of the design rather than a fault, and it is largely irrelevant on the smooth surfaces this kit is built for.

Fitment for the Porsche 997 Turbo Carrera-4 (2005-2011)

Built for the Porsche 997 Turbo Carrera-4 (chassis reference PO04-2-C), this kit covers the full 2005-2011 production run. The cancellation module addresses Porsche’s Active Suspension Management system directly, suppressing the fault codes generated when non-OEM dampers replace the factory units. Confirm your car’s PASM configuration before ordering, particularly if previous suspension work has been carried out.

What buyers also search for

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Your suspension setup starts with the spec options below – configure your Circuit Master, confirm the 997 Turbo fitment details, and build yours from here.