XYZ Racing Drag Racing Coilovers — Infiniti FX35/37 S51 4WD (Modified Rear Integrated) 2008-2013

Straight-line launches load a 4WD platform differently to a track corner, and the S51-generation FX35/FX37 carries real weight over that drivetrain. XYZ Racing’s Drag Racing coilover for this Infiniti is built around 0-400m launch behaviour specifically, not repurposed circuit hardware with a softer spring swapped in.

For a heavy 4WD crossover platform like the FX, getting power down cleanly off the line matters more than outright grip through a corner. This kit is set up to manage that front-to-rear weight transfer the instant the throttle goes down, rather than leaving it to chance.

What this coilover does for your 2008-2013 Infiniti Fx35/37

Launching a 4WD FX35 or FX37 hard puts sudden compression through the rear tyres as weight shifts backward under acceleration. This coilover’s damping and spring setup is calibrated to work with that transfer rather than fight it, helping the rear tyres compress and load more evenly the instant you leave the line. The result is less wheel idle time – the gap between the tyre spinning and the tyre actually gripping – which on a heavy 4WD platform like the FX is where a lot of elapsed time gets lost. Stability through that first few metres of the run improves as the chassis settles instead of hopping or wandering under load. Because the setup is matched to this specific Modified Rr Integrated fitment, the rear geometry works with the FX’s factory-integrated rear end rather than against it.

About the Drag Racing coilover

XYZ Racing engineered this coilover line specifically for 0-400m drag racing, covering FWD, RWD and 4WD applications rather than a single drivetrain layout. The core idea is controlling how weight moves between the front and rear axles the instant a car launches, so the drive wheels get more useful compression into the tyre and less wasted wheelspin. On a 4WD car that means coordinating how quickly the rear settles under load so the tyres bite sooner and the car stops idling wheel speed it can’t use. That translates into a shorter, more repeatable window between launch and full traction, which is the difference that shows up on a time slip rather than a lap time. It’s a purpose-specific damping and spring calibration, not a general-purpose fast-road or circuit setup adapted after the fact.

Fitment for the Infiniti Fx35/37 S51 4WD (modified Rr Integrated) (2008-2013)

This kit is built for the S51-chassis Infiniti FX35 and FX37, 4WD models with the Modified Rr Integrated rear configuration, covering the 2008 to 2013 model years. Confirm your FX carries this 4WD Modified Rr Integrated rear layout before ordering, as the S51 range spans multiple drivetrain and rear-end configurations across its production run.

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Configure the Drag Racing spec for your S51-generation FX35 or FX37 below and build yours to match your rear-end configuration.