XYZ Racing Top Sport Coilovers — Infiniti M35 / M45 Y50 FUGA 4WD (Modified Rear Integrated) 2006-2010

The Y50-generation M35 and M45 – badged FUGA in your Infiniti’s Nissan homeland – carries a heavy, front-mounted V6 over a chassis tuned for motorway comfort, not turn-in. Add the 4WD driveline’s transfer case and the modified rear subframe that integrates the second axle, and kerb weight climbs well past two tonnes with a nose-heavy split the factory dampers were never built to control at speed.

XYZ Racing’s Top Sport coilover kit for the Infiniti M35 / M45 Y50 FUGA 4WD is built for the owner who wants that inertia checked on a B-road or an occasional trackday, then wants to drive home afterwards. It lifts damping and spring rate over street settings without tipping into a car that beats you up on the daily commute.

What this coilover does for your 2006-2010 Infiniti M35 / M45 Y50 FUGA 4WD (Modified Rr Integrated)

On a car this heavy, body control is the whole game. Lifting spring rate by around 2kg/mm over the standard setting – or taking damping up by 30 to 50 percent – checks the pitch and dive the factory setup allowed under hard braking and throttle, so the nose stops diving into corners and the tail stays planted through the FUGA’s integrated rear end. Suppressing that shock-body movement keeps the contact patch working instead of skating over ridges and expansion joints, which matters more on a 4WD saloon carrying this much mass than it does on something light. The net result on the road is a car that turns in with less lean, brakes with less nose-dive, and puts power down through the rear-biased 4WD system without the wallow the standard dampers allowed. It feels like driving something closer to half the weight your M35 or M45 actually carries.

About the Top Sport coilover

Top Sport is XYZ Racing’s setup for owners doing more than the odd fast road drive most weekends. Spring rates and damping are set 30 to 50 percent firmer than the street-oriented range, adding roughly 2kg/mm of stiffness over the daily setting purely to keep the body flatter when you’re pushing on. That extra rate absorbs the impact of poor tarmac and larger compressions without transmitting the hit straight into the chassis, and stops the shock body from moving around under load – which is what keeps the tyre loaded and gripping rather than skipping. XYZ Racing carries this valving and spring-rate combination over from its own racing experience, so the settings come from time spent chasing consistent handling under repeated hard use rather than a desk calculation. It’s built for trackday sessions and aggressive road driving, where the car needs to hold its line through repeated hard stints while still being liveable enough to drive to the circuit and back.

Fitment for the Infiniti M35 / M45 Y50 FUGA 4WD (Modified Rr Integrated) (2006-2010)

This kit is built specifically for the Y50-chassis M35 and M45, sold in Japan as the FUGA, across the 2006 to 2010 4WD model run with the modified, rear-integrated subframe – chassis code IN09. It isn’t a generic Y50 fitment: the 4WD driveline and its altered rear-end packaging change the geometry enough that a RWD-spec kit won’t sit or locate the same way. Confirm your car matches the 4WD, rear-integrated spec before ordering.

What buyers also search for

• Infiniti M35 M45 Y50 FUGA suspension upgrade for road and track use
• Infiniti M35 M45 4WD coilover kit with adjustable spring rate and damping
• XYZ Racing Top Sport coilovers for heavy executive saloons
• Y50 FUGA 4WD ride height and handling upgrade
• Infiniti M35 M45 trackday suspension for the 2006-2010 model

If your M35, M45 or FUGA matches the 4WD, rear-integrated spec above, pick your Top Sport setup and configure the kit for your car below.