XYZ Racing Circuit Master Coilovers — Nissan MAXIMA A31 (OE Rear WISHBONE) 1989-1994

The A31 Maxima’s independent rear wishbone geometry gives up a lot of the composure a modern multi-link setup takes for granted, especially once you start loading the rear axle hard through a fast direction change. On track, that shows up as a floatier rear end just when you need it planted. Circuit Master is built to put that composure back, tuned for sustained lap-time work rather than a single hot lap.

This is the top-tier coilover in the range, built for owners running the A31 in genuine circuit sessions – repeated laps, not a track day taster. It replaces the factory spring and damper as a matched unit at each corner, giving the rear wishbone geometry a fixed, adjustable reference point instead of the compliance built into the original road-biased tune.

What this coilover does for your 1989-1994 Nissan Maxima

With 9720 combinations of damping adjustment on tap through the unit’s three external knobs, you can set the front and rear independently to match how the A31’s weight moves under braking and through direction changes, then fine-tune again once you’ve logged a session. The monotube-style circuit construction keeps damping force consistent as oil temperature climbs across a longer run, which matters on this chassis because the OE rear wishbone setup was never designed to hold a consistent camber curve under sustained lateral load. Ride height is adjustable independently of spring preload, so you can get the A31’s stance and corner weights right without changing the spring rate you’ve settled on. The net effect at the rear is a wishbone that tracks more predictably lap after the first one, with less of the pitch and squat that made the standard suspension feel loose once the car and tyres were up to temperature.

About the Circuit Master coilover

Circuit Master sits at the top of XYZ Racing’s range, developed off feedback from XYZ-affiliated racing teams competing at circuits internationally rather than built purely for road use. The headline figure is 9720 possible damping combinations across the unit’s three adjustment knobs, giving a genuinely wide tuning window rather than a handful of preset stiffness steps. That range of adjustment is delivered through a small-oil-hole passage design in the damper; when the car goes over a sharp bump, it’s normal to hear a slight noise as oil moves through that passage; it isn’t a fault and doesn’t affect damping performance, and on a circuit surface rather than a rough road it’s rarely an issue in practice. The unit is aimed squarely at circuit use, where consistent, repeatable damping across a session counts for more than initial ride comfort.

Fitment for the Nissan Maxima A31 (OE Rr Wishbone) (1989-1994)

This kit is built specifically for the Nissan Maxima A31 with the factory rear wishbone rear-suspension layout, covering the 1989 to 1994 model years. Chassis code NI05 identifies this exact configuration in the range, so check your rear suspension type against this OE wishbone spec before ordering, as later A31 variants may use a different rear layout.

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Circuit Master is built for owners taking the A31 seriously on track – configure yours below to match your rear wishbone spec.