XYZ Racing Super Sport Coilovers — Infiniti Q45 (G50) Front top mount: 116mm / Front lower mount: φ20 1989-1997

The G50 Q45’s double-wishbone layout front and rear was unusual for a Japanese luxury flagship in 1989, but Nissan built it to carry real speed, not just insulate the cabin – and the factory dampers were tuned almost entirely for the latter. XYZ Racing’s Super Sport coilover gives that chassis the support it was always capable of using, without stripping out the ride quality that made the Q45 a genuine long-distance GT.

For fast-road driving and the occasional trackday, that means less float over compressions, sharper response when you load the outside front tyre, and a car that finally uses its double-wishbone geometry the way it was designed to work rather than fighting soft factory spring rates.

What this coilover does for your 1989-1997 Infiniti Q45

Ride height adjustment lets you correct the nose-heavy stance the VH45DE V8 imposes on a stock Q45 and get the corner weights back where they should be before you even touch the dampers. The 36-way damping adjustment means you can run the car firm for a track day and wind it back off for the drive home, useful on a car this size, where too much low-speed compression damping turns big B-road undulations into a jarring ride rather than a controlled one. Because the adjustment range is genuinely wide, you’re not locked into a single compromise: soft for the commute, firmer when the road opens up or you’re on circuit. The result on a heavy, long-wheelbase saloon like the Q45 is less pitch under braking and less roll transferring load off the inside rear as you turn in, so the chassis stays flatter and more predictable through a fast direction change.

About the Super Sport coilover

XYZ Racing’s Super Sport line was built around a simple problem: factory dampers on road cars are set up to soak up potholes and expansion joints, and that softness is exactly what costs you composure once the pace picks up. The Super Sport damper addresses that harshness first, smoothing out the bump and rebound response that makes a stiffly-sprung car unpleasant to live with day to day. On top of that it carries 36 separate damping adjustment positions, giving you fine enough steps to match the setup to the road surface and conditions in front of you rather than picking between two or three preset compromises. Ride height is independently adjustable too, so you can set stance and corner balance without touching the damping curve you’ve settled on. XYZ pitch this as a damper that covers both ends of the use case, weekend racing and everyday driving, rather than a single-purpose track-only unit, which is exactly the brief for an owner who wants one car to do both jobs.

Fitment for the Infiniti Q45 (1989-1997)

This kit is built for the G50-chassis Infiniti Q45, covering the full 1989 to 1997 production run, with a front top mount measuring 116mm and a front lower mount at φ20. Confirm those two dimensions against your car before ordering, as they’re the two most common points where fitment gets mixed up on G50-generation kits.

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Pick the spec that matches how you actually use your G50 and configure yours below.