Why the Factory Suspension Leaves Something on the Table
The RZ34 Nissan Z is a genuinely capable sports car out of the box. The twin-turbo VR30DDTT makes strong power, the manual gearbox is one of the best in its class, and the chassis geometry is well sorted for a front-engine, rear-drive layout. But like most modern sports cars, the factory suspension is a compromise. It has to satisfy warranty obligations, pass NVH targets, cope with a wide range of wheel and tyre sizes across global markets, and provide a ride quality that does not generate complaints from buyers who will never take the car near its limits.
For owners who actually drive their Z with intent, that factory compromise becomes the car’s most obvious weak point. The dampers are soft enough to allow noticeable body roll under hard cornering, the ride height sits higher than it needs to for spirited road use, and there is no way to adjust the damping to suit different conditions or driving styles. The owner of this Z knew exactly what was holding the car back and came to us wanting a proper coilover setup that would sharpen the handling without turning the car into a track-only machine.
Choosing Australian-Made MCA Suspension
We recommended the MCA Pro Street coilover for this application. MCA are an Australian suspension manufacturer based in Murwillumbah, and their products are designed, built, and tested locally. That matters for a few reasons beyond national pride. MCA’s damper valving and spring rates are developed on Australian roads, which tend to be rougher and more varied than the billiard-smooth test tracks that many imported coilovers are optimised for. Their local support means that if the owner’s requirements change down the line, whether that is different spring rates for track use or a revalve to suit a different tyre compound, the turnaround is fast and the advice is specific to how the car is being used in this country.
The Pro Street sits in MCA’s range as a street-focused coilover with genuine performance credentials. It offers full ride height adjustment via a threaded body, and 30 clicks of damping adjustment that allow the owner to fine-tune the balance between comfort and control. At the softer end of the range, it is compliant enough for daily driving over Melbourne’s less-than-perfect road surfaces. Wound up towards the firmer end, it tightens the car up noticeably for spirited driving on back roads or the occasional track outing. It is the kind of adjustability that makes a real difference to how the car feels, not a gimmick that sits on one setting and gets forgotten.
Fitting and Setup
The coilovers were assembled on the bench to the correct ride height before going anywhere near the car. Getting the spring preload and ride height right at this stage means the install goes smoothly and the car comes off the hoist at the intended height without needing to be raised and lowered repeatedly to make adjustments.
The factory struts and springs were removed from all four corners, and the MCA Pro Street units went in. Damping was set to a baseline that suits the owner’s typical driving, slightly firmer than the middle of the range to give the Z the connected, responsive feel it deserves on the street without being punishing over bumps.
With the coilovers fitted and the car back on its wheels, a full four-wheel alignment was performed to match the new geometry. Any time you change ride height on a car, the suspension geometry changes with it. Camber, toe, and caster all shift, and if you do not realign the car after a coilover install, you are not getting what you paid for. The alignment was set to suit the owner’s use case: spirited street driving with a mild amount of additional front negative camber for improved turn-in response.
How It Drives Now
The difference on the road is immediately noticeable. Turn-in is sharper and more direct, the car stays flatter through direction changes, and there is a level of mid-corner composure that the factory suspension simply cannot match. Under braking, the nose dives less and the car stays more balanced, which gives the driver more confidence to brake later and carry more speed into corners. The rear end is more planted on corner exit, and the overall feeling is of a car that responds to inputs with precision rather than vagueness.
Importantly, none of this comes at the expense of usability. The ride quality on MCA’s softer damping settings is perfectly liveable for daily commuting, and the owner can dial the firmness up or down in seconds depending on where they are going and how they want to drive. It is a genuine upgrade in every sense, and it makes the RZ34 feel the way Nissan’s engineers probably wished they could have delivered it from the factory.
