XYZ Racing Circuit Master Coilovers — Nissan 350 Z Z33 (Modified Rear Integrated) 2002-2008

The Z33’s front-mid engine layout puts a 3.5-litre V6 well back behind the front axle, and that mass balance is exactly what turns a 350 Z into a car that rewards a driver who can trust the rear end under load. XYZ Racing’s Circuit Master coilover kit is built for the owner chasing consistent lap times, not the occasional Sunday blast, and it’s specced accordingly for the Z33’s modified rear-integrated setup.

Circuit work exposes anything soft in a 350 Z’s rear geometry fast – trail-braking into a hairpin, the rear steps if the spring and damping rates aren’t matched to the car’s weight transfer. This kit is aimed squarely at sustained lap-time sessions rather than a single fast road blast, which is the use case that actually separates a Circuit Master build from XYZ’s fast-road ranges.

What this coilover does for your 2002-2008 Nissan 350 Z Z33

On a 350 Z Z33, the Circuit Master’s damping range lets you firm up compression and rebound independently, which matters when the car’s rear weight bias wants to rotate under trail-braking rather than push wide. With 9,720 combinations available across the three external adjustment knobs, you can set the front end to resist dive under braking into a chicane while keeping the rear planted enough to get on the throttle early out of a hairpin – two things a fixed-rate setup can’t do at once. Ride height adjustment lets you correct the roll centre changes that come with lowering a 350 Z, which otherwise eats into the mid-corner grip this chassis is capable of. Lap after repeated lap, the monotube-style damper design resists the fade that softer twin-tube setups suffer once oil temperatures climb on a track day.

About the Circuit Master coilover

XYZ Racing positions the Circuit Master as its top-tier competition damper, developed and run by XYZ’s own racing squads across international circuit events rather than built as a fast-road product with a track badge stuck on it. The headline figure is 9,720 distinct adjustment combinations across three external knobs, giving a far finer window for matching damping to a specific 350 Z’s weight, tyre and circuit than a basic single-adjustable unit allows. The three-knob layout uses small-bore oil passages to achieve that resolution, and XYZ notes this can produce a faint noise over sharp bumps or kerbs – a by-product of the fine metering rather than a fault, and not something that shows up as an issue once you’re on smooth track tarmac. The kit is built and calibrated for circuit driving specifically, so the noise trade-off is accepted in exchange for adjustment precision that a road-biased damper doesn’t offer.

Fitment for the Nissan 350 Z Z33 (2002-2008)

This kit is built for the Z33-chassis 350 Z, 2002 to 2008, in the modified rear-integrated configuration – confirm your car matches this rear subframe/mounting spec before ordering, as the Z33 saw running changes across its production years. Chassis code NI03 covers this fitment in XYZ’s catalogue.

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Spec your 350 Z Z33’s damping and ride height to match how you actually drive it – configure yours below.