XYZ Racing Hollow Rear Brake Kit — Infiniti FX35 S50 (2003-2008)

The S50 FX35 hauls close to two tonnes on the same FM platform that underpins the 350Z and G35, and the factory rear brakes were specified for a luxury crossover rather than the way most owners actually drive one. On a long descent, a loaded motorway run, or a committed back-road stint, that standard rear setup runs short on heat capacity well before the chassis does. The XYZ Racing Hollow Rear Brake Kit for the Infiniti FX35 S50 (2003-2008) tackles the back axle of that problem directly.

This is the rear half of a bigger braking upgrade, aimed at FX35 owners who use the VQ35’s pace instead of just sitting in it. The hollow-vane disc sheds heat faster and trims rotating mass at each rear corner, while three pad compounds let you match the kit to road, fast-road, or harder track use.

What this brake kit does for your 2003-2008 Infiniti FX35 S50

On a vehicle this heavy, the rear brakes do quiet but important work managing balance and soaking up heat the fronts can’t take alone. Fit this rear kit and the FX35 holds a firmer, more repeatable pedal once the discs are warm, so the second and third hard stop feel like the first instead of going long and soft. The hollow discs run cooler, which keeps fade at bay on sustained descents and reduces the warping that plagues tired factory rotors on a two-tonne crossover. Step up to the Sport or Racing pad compound and you gain bite and fade resistance for spirited driving, while the Street pad keeps things quiet and low-dust day to day, and the caliper finishes sit visibly behind the FX’s large-diameter wheels.

About the Hollow Big Brake Kit

XYZ Racing’s hollow-vane disc construction is the core of this kit: the rotor is lightened internally to cut unsprung and rotating weight while increasing the surface area working to dump heat. The two-piece floating rotors run cooler still, and the caliper body is hollow as standard. Less rotating mass at the rear axle helps the FX35 change direction and stop with less inertia fighting it, and better thermal management is what separates a brake that survives one hard stop from one that survives a sequence of them. The kit is a pair of rear discs and calipers offered with three pad compounds, Street for quiet everyday road use, Sport for fast-road bite, and Racing for the highest-temperature work, so the same hardware suits very different drivers. Discs come drilled or slotted at the same price. Calipers come in Red, Yellow, Gold, Black and Anodized Black at no extra cost, with premium polished-forged Titanium, Polished Gold and Polished Silver, candy Teal, Blue, Red and Orange, or any Pantone shade as a custom colour, so the upgrade can be functional, cosmetic, or both.

Fitment for the Infiniti FX35 S50 (2003-2008)

This kit is built for the rear axle of the S50-generation Infiniti FX35, covering the 2003 to 2008 model years. Confirm your chassis is the S50 FX35 and pair it with the matching front kit for a balanced setup front to rear. Choose your pad compound and caliper colour to suit how, and where, you drive.

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Choose your pad compound and caliper finish for your FX35 rear brake kit when you order.