XYZ Racing Gravel Rally Coilovers — Infiniti G37 COUPE CONVERTIBLE USA (Modified Rear Integrated) 2009-2013

Loose surface changes the maths on a G37. Weight transfer that a tarmac-biased damper would resist instead gets used, and the rear-integrated subframe on this modified Rr layout needs a shock that can keep the axle tracking straight when the surface underneath it is constantly shifting. The Gravel Rally coilover is built for exactly that: gravel-stage and rally-cross work where the road never stays the same for two corners in a row.

Where a road or track damper is tuned to control a chassis on a grippy, predictable surface, this kit is built around the opposite problem – a wheel that’s airborne one moment and buried in loose stone the next. On the G37’s naturally heavier rear end, that matters more than most applications; the damper has to keep controlling weight transfer over compressions and crests without the surface ever giving it consistent feedback.

What this coilover does for your 2009-2013 Infiniti G37

Fitted to a 2009-2013 G37 Coupe Convertible USA in this modified Rr integrated configuration, the long stroke and long spring give the axle room to move with the terrain instead of skipping across it, which is what keeps the rear planted when a G37 launches off a crest at speed. The inverted tube design holds its damping character whether the surface underfoot is sand, snow or silt, so the car’s behaviour doesn’t shift halfway through a stage because the shock has started to fade. That matters on a heavier coupe platform like this one, where unsprung mass working against a soft, changeable surface can unsettle the rear faster than on a lighter car. The result on corner entry is a rear axle that stays loaded and predictable even as the surface breaks away underneath it, rather than one that steps out the moment grip drops.

About the Gravel Rally coilover

XYZ Racing built the Gravel Rally line specifically around rally and rally-cross use, on the basis that gravel-stage road surfaces are the most punishing a damper will see in competition – which makes the shock absorber itself the single most stressed component on the car during a gravel event. The inverted tube construction is there to keep the damper responding consistently as the road surface changes underneath it, whether that’s sandstone, snow or silt on the same stage. Long stroke travel paired with a long spring lets the chassis absorb vibration from a genuinely aggressive, high-speed bouncy road rather than transmitting every impact straight into the chassis, and the setup is built to take the extreme G-force loading that comes with turning on a loose surface. Every spring rate in the range has been set and proven by an actual rally racing team rather than derived on a rig, which is the difference between a damper that copes with gravel and one that’s designed around it from the outset.

Fitment for the Infiniti G37 (2009-2013)

This kit is built for the Infiniti G37 Coupe Convertible USA, chassis code IN07-1, across the 2009-2013 model years in the modified Rr integrated configuration specifically – confirm your car matches this rear-integration spec before ordering, as it’s a distinct fitment from the standard G37 rear end.

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• G37 modified Rr integrated coilover fitment 2009-2013

Configure the spring rate and adjustment options for your G37 below to get the exact Gravel Rally spec for your build.