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

The S51-generation FX35/37 carries its weight high and forward of the front axle, a legacy of the VQ35/VQ37 V6 sitting well ahead of the firewall in a 4WD platform originally built for a truck-based crossover, not a corner. That nose-heavy stance means the standard dampers are tuned for comfort first, letting the front end wallow under trail braking and roll more than the chassis needs to. The Street Advanced coilover is built for owners who want that corrected without turning the FX into something unliveable on the M25.

This kit brings adjustable damping and ride height to a platform that left the factory with neither, so you can drop the centre of gravity and firm up body control while keeping the FX35/37 usable as a daily. It’s the right call for enthusiast street driving with the occasional track day, not a car being built purely for lap times.

What this coilover does for your 2008-2013 Infiniti FX35/37 S51 4WD (Modified Rr Integrated)

Fitted to this modified-rear-integrated 4WD chassis, the coilover’s 720-way damping adjustment lets you tune compression and rebound independently enough to address the FX’s specific weak point: front-end dive under hard braking from speed. Wind in more low-speed compression at the front and the nose stays level when you’re trail-braking into a roundabout, while the rear stays composed through the AWD system’s torque split under power. Dropping ride height on the threaded body lowers the centre of gravity across a chassis that otherwise sits tall for its crossover-SUV roots, cutting body roll through direction changes without the compliance loss that a fixed-rate spring swap would bring. Because the damping stays adjustable after fitting, you can soften the rear for a laden motorway run and firm it back up for a B-road without touching the geometry.

About the Street Advanced coilover

XYZ Racing developed Street Advanced as its highest-volume product line, refined over years of use and validated in races run by XYZ’s own teams internationally. It sits between comfort-biased road coilovers and full track kits, aimed squarely at drivers who use their car on the road every day but still want a chassis that responds properly on a track day. The defining spec is the 720-way damping adjustment, giving a far finer resolution of tuning than the handful of clicks most adjustable dampers offer, so you can find a setting for daily comfort and a distinct setting for spirited driving without compromising on either. XYZ positions this as essential kit for drivers who want genuine control and pace from their car rather than a badge-only upgrade, and the wide adjustment range is what makes that claim stand up on a heavy AWD platform like the FX.

Fitment for the Infiniti FX35/37 S51 4WD (Modified Rr Integrated) (2008-2013)

This kit is engineered specifically for the S51-chassis FX35/37 built 2008 to 2013, covering the 4WD variant with the modified rear-integrated mounting configuration (chassis code IN01). Confirm your FX is the S51 generation with 4WD drivetrain before ordering, as the rear integration point on this platform differs from the RWD version.

What buyers also search for

• Infiniti FX35 FX37 S51 suspension upgrade for road and track use
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• FX35/37 4WD ride height and damping kit for daily driving and occasional track days
• Infiniti FX S51 coilover setup for a heavy AWD crossover chassis
• Street Advanced 720-way damping coilovers for the Infiniti FX35/37

Pick your spring rate and configure the exact Street Advanced spec for your FX35/37 below.