XYZ Racing Racing Spec Coilovers — Infiniti Q45 (Y33) welding 1997-2001

The Y33 Q45 was never built as a track car. It’s a nearly two-tonne Japanese flagship saloon with a long wheelbase and a VH45DE V8 hung out front, and the factory strut geometry reflects that brief – soft, comfort-biased, and quick to give up its composure the moment you load the front end hard into a corner. The Racing Spec coilover for the Q45 exists to correct exactly that mismatch between chassis mass and suspension intent.

Because the Y33’s strut housing wasn’t designed to accept a bolt-in coilover sleeve, this kit is a welded lower-mount conversion – the damper body is fitted and the mount welded in place rather than clamped on, giving a rigid, purpose-built location for the shock that a bolt-on adapter can’t match. That’s the right call for a car this heavy going into serious track and time-attack use, where mount flex under load is the first thing to give.

What this coilover does for your 1997-2001 Infiniti Q45 (Y33)

Dropping the Q45’s centre of gravity and stiffening the spring rate does more work here than on a lighter chassis, because there’s more mass for the factory geometry to manage in transition. Expect flatter body control turning into a corner, less nose-dive under braking from that long-bonnet weight bias, and a front end that stays loaded and predictable through trail-braking rather than pushing wide. Ride height and damping are both adjustable, so the same car can be set up firm for a track session and backed off for the drive home. On a chassis this size, a well-located spring platform also does more to control roll than most owners expect from a Q45.

About the Racing Spec coilover

XYZ Racing’s Racing Spec damper is the circuit-focused end of the range, with settings pulled directly from XYZ’s involvement in WTCC competition rather than road-biased tuning carried over from a fast-road kit. For cars running heavier modifications – bigger brakes, wider tyres, aero, factory-level racing builds – XYZ can also produce a custom-made shock absorber for the specific car, built around the modifications already fitted and the circuit it’s run on; that’s a conversation to have directly with XYZ once you know your spec. Construction and valving are built for repeated hard use rather than a single sighting lap, which matters on a car as heavy as the Q45 where the dampers are working constantly to control mass transfer.

Fitment for the Infiniti Q45 (Y33) WELDING (1997-2001)

This kit fits the Y33-generation Infiniti Q45 built between 1997 and 2001, using the welded lower-mount conversion described above rather than a bolt-on adapter. Confirm your car is the Y33 chassis code before ordering, as earlier and later Q45 generations use different suspension architecture.

What buyers also search for

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