XYZ Racing Circuit Master Coilovers — Infiniti EX35 4WD (Modified Rear Integrated) 2007-2012

The EX35’s crossover body sits taller and carries more mass over the front axle than the G37 saloon it shares its FM platform with, and that extra height shows up as body roll and front push the moment you trail-brake into a fast corner with the factory AWD suspension still fitted. Circuit Master is built to take that weight transfer out of the equation on a car that was never meant to see a track day in factory trim.

This is XYZ Racing’s session-length setup, not a one-lap special. Where a fast-road kit is tuned to soak up broken tarmac on the way to work, Circuit Master is built around holding its damping curve through a full 20-minute circuit session in a 3.5-litre V6 AWD crossover that’s heavier than most of the saloons sharing its grid.

What this coilover does for your 2007-2012 Infiniti EX35

With three separate adjustment knobs feeding into 9720 individual damping combinations, you can set compression and rebound independently front and rear to counter the EX35’s nose-heavy AWD weight bias rather than compromising on a single fixed curve. That range matters on a car this size: dial more low-speed compression into the front to check the dive under trail-braking, then back off the rear rebound so the AWD system can still put power down cleanly on corner exit. Ride height is adjustable independently of spring preload, so you can drop the centre of gravity for track use without changing the loaded spring rate you’ve settled on. The fine damping resolution also means you’re not choosing between "too soft to trust under load" and "too harsh to hold a line over kerbs" – there’s a usable step between the two.

About the Circuit Master coilover

Circuit Master sits at the top of XYZ Racing’s range, developed alongside setups the brand runs in international circuit racing, and the EX35 4WD application carries that damper architecture straight across. The three-knob adjuster uses a small-bore oil-passage design to give the 9720-way range its resolution; the trade-off is that on sharp bumps you may hear a faint noise as damping fluid moves through that narrower passage. That’s the geometry doing its job, not a fault, and it’s the reason this kit is specified for circuit surfaces rather than potholed B-roads. The "Modified Rr Integrated" rear end on this application means the rear damper and mounting hardware are built specifically around the EX35 4WD’s rear subframe geometry, rather than adapted from a two-wheel-drive Infiniti kit. It’s a setup built for a car that’s going to be driven hard and repeatedly, session after session, rather than optimised for daily comfort.

Fitment for the Infiniti EX35 (2007-2012)

This kit is specified for the Infiniti EX35, chassis code IN17, across the full 2007 to 2012 production run in AWD (4WD) form. The "Modified Rr Integrated" designation confirms the rear coilover and mounting hardware are matched to this generation’s AWD rear subframe layout, so no additional rear-end modification is needed beyond the kit’s own fitment. Confirm your build year falls within the 2007-2012 range before ordering, as Infiniti made running changes to the EX35 platform across its production life.

What buyers also search for

• Infiniti EX35 coilover upgrade for AWD circuit and track-day use
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• Circuit-focused coilover kit for the Infiniti EX35’s AWD weight distribution

Spec your Circuit Master kit for the 2007-2012 EX35 4WD and configure yours below.