XYZ Racing Circuit Master Coilovers — Infiniti Q45 (Y32) welding 1991-1996

The Y32 Q45’s near-1.7-tonne kerb weight and long wheelbase were engineered around comfort, not corner exit, and that mass is the first thing you notice once this Nissan-built flagship saloon is asked to hold a line at pace. Circuit Master addresses that directly: full coilover control front and rear, replacing the factory’s soft, comfort-tuned rates with a setup built for sustained lap-time work rather than motorway cruising.

This kit is aimed at owners running the Q45 (Y32) on track days or club circuit sessions, where body roll and dive under braking need managing consistently rather than just on the odd hard stop. It’s a welding-type installation, so fitment is permanent once set – the trade-off for a mounting point precise enough to hold its geometry through repeated heavy cornering loads.

What this coilover does for your 1991-1996 Infiniti Q45 (Y32) WELDING

On a chassis this heavy, damping control matters more than outright stiffness, and Circuit Master’s adjustment range is what lets you find that balance rather than guessing at it. With 9720 combinations available across the damper, you can run the front firm enough to resist nose-dive under braking from Q45 speeds while keeping the rear settled through direction changes, instead of compromising on a single fixed rate. Ride height drops as part of the coilover conversion, lowering the centre of gravity on a car that came from the factory riding relatively tall, which pays back directly in reduced weight transfer through fast corners. Because adjustment is external via the damper knobs, you can retune between sessions as tyres, fuel load or track surface change, instead of pulling the strut apart.

About the Circuit Master coilover

Circuit Master is XYZ Racing’s dedicated circuit-spec damper, developed and run by XYZ’s own racing teams across international championships before making it into road-going kits. The headline figure is 9720 distinct damping combinations, controlled through three separate adjustment knobs rather than one dial, giving genuinely independent control over compression and rebound characteristics instead of a single setting doing both jobs. That range of adjustment relies on a small-oil-hole design inside the damper body; on rough sections of a circuit or over kerbs, this can produce a faint noise as oil passes through the restricted passage, which is a normal characteristic of the design rather than a fault. The damper is built for repeated circuit use rather than occasional fast-road driving, and the internals are specified to take the sustained heat cycling that comes with back-to-back sessions rather than a single hard drive.

Fitment for the Infiniti Q45 (Y32) WELDING (1991-1996)

This kit is specified for the Infiniti Q45, Y32 chassis, built between 1991 and 1996, with a welding-type mounting for the strut assembly. Confirm your Q45 is the Y32 generation before ordering, as mounting points and strut geometry are specific to this chassis code and won’t carry over to earlier or later Q45 generations.

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Spec your damping and ride height for the Q45 (Y32) below, and build yours to suit the sessions you’re actually running.