XYZ Racing Circuit Master Coilovers — Infiniti G35/G37/G37 COUPE Rear FORK (Modified Rear Integrated) 2006-2014

The G35/G37 coupe’s rear multi-link geometry was built to carry a naturally aspirated VQ V6 well past the point where a stock damper gives up, and that’s exactly where the Circuit Master earns its keep. This IN07-spec kit is built around the Rr FORK (Modified Rr Integrated) mounting arrangement specific to these cars, so the shock body and mount geometry match what the rear subframe actually needs under sustained cornering load rather than a generic bolt-in approximation.

For an Infiniti G35 or G37 coupe doing repeat lap sessions, the rear axle’s job is to stay planted through direction changes without the wallow that stock rubber-bushed dampers introduce once track temperatures climb. Circuit Master is XYZ Racing’s dedicated circuit-day platform, built for exactly that brief rather than a fast-road compromise.

What this coilover does for your 2006-2014 Infiniti G35/G37

On a G35/G37 coupe, body roll through fast direction changes and rear-end squat under power out of corners are the two things a stock setup struggles to control once you’re doing back-to-back laps. The 9,720-position damping adjustment on this kit means you can set the rear noticeably firmer for circuit work without giving up the low-speed compliance you need over kerbs and transitions. Ride height adjustment lets you correct the G35/G37’s factory-set corner weights and drop the centre of gravity, which sharpens turn-in and reduces the nose dive under braking that shows up in the FM platform’s chassis when the front end is pushed hard. Because the damping range is this wide, you can run one setting for a track day and wind it back for the drive home rather than owning two separate suspension setups.

About the Circuit Master coilover

Circuit Master is XYZ Racing’s circuit-focused damper line, developed and run by XYZ’s own racing teams across international motorsport before it reaches retail. The headline figure is 9,720 distinct damping combinations, delivered through 3 external adjustment knobs, giving a genuinely fine-grained window between compliant and full-attack settings rather than a handful of coarse steps. The internal oil path runs through deliberately small passages to hold that resolution of adjustment, which is a trade-off worth knowing about: on rough circuit surfaces you may hear a faint noise from oil moving through those passages under big compressions. That’s a normal characteristic of this damper design, not a fault, and it has no bearing on how the kit performs lap after lap on the track surfaces it’s built for.

Fitment for the Infiniti G35/G37 (2006-2014)

This kit is built for the Infiniti G35/G37 coupe, chassis code IN07, covering the 2006 to 2014 model years, in the Rr FORK (Modified Rr Integrated) rear configuration. Confirm your car matches this specific rear mounting arrangement before ordering, as the G35/G37 range spans more than one rear suspension mounting design across its production run.

What buyers also search for

• Infiniti G35/G37 coilover upgrade for track day and fast road use
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• Circuit Master coilover fitment for IN07 chassis 2006-2014

Configure your Circuit Master spec for the G35/G37 below and set it up for your car.