XYZ Racing Hollow Rear Brake Kit — Infiniti QX70 (S51) (2013-2017)

The S51 QX70 carries the better part of two tonnes, and a surprising slice of that mass settles onto the rear axle the moment you lean on the brakes hard from speed. The standard rear setup was specified for a comfortable luxury crossover, not for a heavy VQ-powered SUV being driven the way most QX70 owners actually drive it. This rear kit exists to give the back axle the thermal headroom and bite the front has always taken for granted.

This is the rear-axle half of an XYZ Racing big brake upgrade for the 2013-2017 Infiniti QX70 (S51). It pairs larger two-piece floating discs with fixed calipers and a choice of pad compound, so the rear contributes properly to stopping a vehicle this size instead of overheating and fading on the second or third hard application.

What this brake kit does for your 2013-2017 Infiniti QX70 (S51)

On a vehicle as heavy as the QX70, the first thing you feel is a firmer, more linear pedal that no longer goes long after a fast motorway slip-road or a loaded descent. The hollow-vane rotors shed weight at the worst possible place for an SUV, unsprung rotating mass, which sharpens how quickly the rear axle reacts and helps the dampers do their job. With the Racing pad compound the rear holds bite through repeated stops where the original discs would glaze and start to smell; the Sport compound keeps that resistance to fade for hard road work, and the Street compound suits owners who simply want more rotor and a cleaner pedal. The net result on the road is a QX70 that settles under braking rather than nose-diving and pushing.

About the Hollow Rear Brake Kit

The kit is a pair of larger two-piece floating discs and fixed calipers. The hollow-vane rotor casting removes material to cut rotating mass while preserving the swept area needed to absorb heat from a heavy SUV. That lower thermal inertia means the rear discs warm into their working range quickly and shrug off the soak that ruins braking consistency on long downhill runs or spirited B-road work. Pad choice spans three compounds, Street, Sport and Racing, so the same hardware suits a fast-road QX70, a towing-and-distance car, or a harder-driven build. The caliper is hollow-body as standard, with an optional Hollow Racing upgrade for serious use that drops the dust cover, is rated to 1000C and carries a two-year warranty. Painted finishes are no-cost in Red, Yellow, Gold, Black or Anodized Black, with a Custom Color in any Pantone for £150 and premium polished-forged (Titanium, Polished Gold, Polished Silver) or candy (Candy Teal, Candy Blue, Candy Red, Candy Orange) options, so the rear setup matches the front and the wheel design rather than hiding behind the spokes. Discs come drilled or slotted at the same price, with two-tone anodized or titanium centre bells selectable at checkout.

Fitment for the Infiniti QX70 (S51) (2013-2017)

This kit is built for the S51-chassis Infiniti QX70 across the 2013-2017 model years and fits the rear axle as a pair of calipers and discs. Confirm your build year falls within that span and pair it with the matching front kit for a balanced setup; select your pad compound and caliper colour to suit how the car is used.

What buyers also search for

• Infiniti QX70 S51 rear big brake kit for a heavy SUV that fades on long descents
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• Infiniti QX70 Racing pad compound for repeated hard stops without glazing
• S51 QX70 rear caliper colour options: Red, Yellow, Gold, Black or Anodized Black
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Match it to your front setup, choose your pad compound and caliper finish, and set yours up using the options above when you order.