XYZ Racing Top Sport Coilovers — Nissan 370 Z Z34 Rear FORK (Modified Rear Integrated) 2009-2022

The 370Z Z34’s factory dampers are tuned for a soft ride, which means the VQ37VHR’s torque loads the outside rear corner faster than the standard valving can control it. XYZ Racing’s Top Sport coilover for the Nissan 370Z Z34 (2009-2022) raises damping force by 30-50% over that street baseline, or steps spring rate up by around 2kg/mm, so the chassis stops wallowing through direction changes and starts transmitting what the rear axle is actually doing.

That distinction matters on this platform specifically because the 370Z’s near-even front/rear weight split rewards a car that rotates predictably rather than one that’s simply stiffened all round. This spec sits for occasional track day work and daily-driveable street use – road manners intact during the commute, composure there when you load the car up on a circuit at the weekend.

What this coilover does for your 2009-2022 Nissan 370 Z Z34

Fitted to the 370Z, the extra damping force controls body movement through the transition from throttle-off to throttle-on mid-corner, where the factory setup lets the rear step out of line before you’re back on the power. The firmer spring rate keeps contact patch pressure more even across a bump, which is where XYZ’s own testing found the tyre losing traction on the stock setup – absorbing the jolt rather than passing it straight into the chassis. On broken B-road surfaces the same increase in damping soaks up impact harshness instead of letting it bounce the rear end, and under hard braking into a corner the front end settles rather than diving and unloading the outside tyre.

About the Top Sport coilover

XYZ’s Top Sport line is built around the same damping and spring-rate philosophy developed through the brand’s own circuit racing programme, then dialled back roughly a third to a half above road settings rather than pushed to full competition stiffness. The idea is to keep enough compliance for daily use while giving the shock body enough control that it doesn’t get overwhelmed the first time you hit a kerb or a bump mid-corner. Spring rate sits around 2kg/mm above the equivalent street kit, which is enough to sharpen turn-in and reduce roll without turning the ride harsh on a motorway run. XYZ positions this tier specifically for track day and aggressive road driving rather than full race use, which is the gap between a comfort-biased street coilover and a stripped-out competition set-up.

Fitment for the Nissan 370 Z Z34 (2009-2022)

This kit is built for the Z34-chassis 370Z across the full 2009-2022 production run, using the Rr FORK configuration with modified Rr Integrated rear mounting (chassis code NI04). Check your rear shock top mount against this Modified Rr Integrated spec before ordering, since it differs from the standard fork-mount rear end fitted to earlier NI04 cars.

What buyers also search for

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• NI04 rear-mount coilover fitment for the 370Z

Spec your Top Sport kit against the NI04 rear-mount configuration and configure yours below.