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

The G50 Q45 was Infiniti’s flagship saloon, a two-tonne V8 cruiser with a chassis never designed to see a circuit. That mismatch is exactly what the Racing Spec coilover exists to correct: a damper built around settings pulled from WTCC-level competition, dropped onto a platform that needs every bit of that control to stop its mass rolling and diving under real track loads.

Fitted to the G50’s front end (116mm top mount, φ20 lower mount), this is the setup for owners running the Q45 in serious track and time-attack sessions rather than weekend cruising. It replaces the factory air suspension’s soft, boulevard-tuned response with a fixed, adjustable platform built to hold a line lap after lap of hard use.

What this coilover does for your 1989-1997 Infiniti Q45

On a car this heavy, body control is the whole battle. The Racing Spec kit tightens turn-in by cutting the initial roll that a stock G50 telegraphs the moment you load the front tyres, and it keeps the nose settled under trail braking instead of letting the V8’s weight pitch forward unchecked. Ride height and damping are both adjustable, so you can drop the centre of gravity and firm up the compression side to suit the specific circuit you’re running rather than a generic road setting. Because the valving comes from actual racing development rather than a road-comfort baseline, the front end stays composed as brake temperatures climb and load transfer repeats across a session – the exact condition where a factory-tuned Q45 starts to feel vague.

About the Racing Spec coilover

XYZ Racing builds the Racing Spec line specifically for track competition, and the damping curves aren’t generic – they come directly from the brand’s involvement in circuit racing series including the WTCC. That heritage shapes how the valving responds: firm enough to control a heavy platform like the G50 without the harsh, unpredictable rebound that off-the-shelf track dampers can have. For cars carrying more aggressive modifications – bigger brakes, wider tyres, factory-style racing preparation, or genuinely A-class competition builds – XYZ Racing also offers a bespoke shock absorber service. Owners can supply full details of their car’s upgrades and the circuit they intend to run, and XYZ will spec a custom-valved damper around that specific combination rather than a one-size-fits-all setting.

Fitment for the Infiniti Q45 (1989-1997)

This kit is specified for the G50-chassis Q45, produced from 1989 to 1997, matched to a front top mount of 116mm and a front lower mount of φ20. Confirm these two mounting dimensions against your car before ordering, as Infiniti revised suspension hardware across the G50’s production run.

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Get the front end of your G50 Q45 properly sorted for track use – configure yours below.