
XYZ Racing Hollow Rear Brake Kit — Audi Q8 QUATTRO (2019-2026)
SKU: XYZ-BRK-BKR-AU-16-A-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø356–421 mm
- Caliper pots6 / 8-pot
- Lead time10–15 working days
Fits Audi Q8 QUATTRO (2019-2026)
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Caliper render for this kit:

The Audi Q8 Quattro carries well over two tonnes across its MLB Evo underpinnings, and most of that mass piles onto the rear axle the moment you lean on the brakes from motorway speed. The standard rear setup is fine on the school run, but it starts to feel vague after a few hard stops down an Alpine pass, or when an SQ8’s torque has been working the chassis all afternoon. This XYZ Racing Hollow Rear Brake Kit for the 2019-2026 Q8 goes straight at that problem: more rotor, more thermal headroom, and a two-piece floating disc that trims rotating mass behind the car’s large factory wheels.
It is a rear-axle upgrade for owners who actually use the Q8’s performance: long descents, repeated heavy braking, the odd track or hillclimb day. Run alongside a front kit it rebalances how the car sheds speed; on its own it sharpens pedal feel and gives the rear something solid to lean on when quattro and the stability system are shuffling braking force.
What this brake kit does for your 2019-2026 Audi Q8 Quattro
On a vehicle this heavy, the gain you notice first is fade resistance. The larger rear rotor absorbs more heat before the pedal goes long, so the tenth stop from speed behaves like the first. The hollow-vane disc construction sheds rotating mass at the corner, taking a small edge off the unsprung weight the dampers have to control over broken UK B-roads. Pad compound is your call: the Street compound stays quiet and low-dust for daily driving, the Sport compound adds bite and heat range for fast road and occasional track, and the Racing compound copes with the temperatures a 2.2-tonne Q8 generates on a circuit. Braided lines keep the pedal firm as the fluid warms. Behind the Q8’s large factory wheels the uprated forged caliper looks the part too, and you can match it to the car in Red, Yellow, Gold, Black or Anodized Black at no extra cost, or a custom Pantone finish.
About the Hollow rear brake kit
The Hollow Rear Brake Kit is XYZ Racing’s rear-axle big brake package, built around a larger-diameter two-piece floating disc and a forged caliper in place of the standard rear brake. The caliper is hollow-bodied as standard, cutting rotating and unsprung mass while the vane structure opens cooling paths through the disc, so heat leaves the rotor faster between applications. Three pad compounds cover the range of use: a Street compound for quiet, low-dust road driving, a Sport compound for spirited road and light track work, and a Racing compound for sustained high-temperature abuse. The caliper ships in five included finishes, from factory-look Black and Anodized Black through Red, Yellow and Gold, with a custom Pantone option. Discs come drilled or slotted at the same price, and the centre bell can be upgraded to two-tone anodized in five colours or titanium when you order. As a rear-specific kit it is set up to work with the Q8 Quattro’s brake balance rather than overwhelm it, so the SUV still stops square under hard pedal.
Fitment for the Audi Q8 Quattro (2019-2026)
This kit is mapped to the quattro Audi Q8 across the 2019 to 2026 model years. It is a rear-axle fitment, a pair of rear calipers and discs, designed to mount to the Q8’s existing hubs and sit within the factory wheel clearance. Confirm your build year and wheel size against your own spec before ordering.
What buyers also search for
- Audi Q8 rear big brake kit for towing and long motorway descents
- Audi Q8 Quattro brake upgrade that holds up to repeat track-day braking
- Q8 rear brake kit with Street, Sport and Racing pad compound options
- Audi Q8 caliper colour choices to match 2019-2026 spec
- Hollow-vane rear disc upgrade to cut rotating mass on a heavy SUV
Choose your pad compound and caliper colour, then build your Audi Q8 rear brake kit using the options above when you order.
What’s in the kit
Rear axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 356–421 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 6 / 8-pot
- 2×High-stiffness mounting brackets
- 2×Braided stainless steel brake lines
- 4×High-performance brake pads (1 set)
- 1×Fitting hardware & tools pack
Parking brake: Electronic parking brake (EPB) compatible.
Choosing your spec
Every kit is built to order around the choices you make above. Here is what each option actually changes, so you can spec yours with confidence.
Brake pads — Street, Sport or Racing
Every kit ships with a full set of high-performance pads; the compound is your call.
Street is the right default for fast-road driving — a strong, progressive cold bite with low noise, low dust and long disc life. Sport raises the working temperature and adds bite and fade resistance for hard road use and the occasional track day, while still behaving on a cold morning. Racing is a track compound built for sustained abuse: huge fade resistance and bite once heat is in it, at the cost of more noise and dust when cold. Match the pad to how hard you actually use the brakes — there is no benefit to a race pad that never gets up to temperature.
Caliper grade — Hollow vs Hollow Racing
Hollow is the standard caliper on every kit: a hollow-body forged caliper, lighter than a solid one, fitted with a dust cover and backed by a 5-year oil-leak warranty. For most fast-road and spirited track use it is all the caliper you need.
Hollow Racing is the track-grade upgrade. It runs the same hollow body but without a dust cover (so there is nothing to melt at sustained high temperature), uses a twin-metal piston that isolates heat travelling from the disc to the oil seal, and is rated to 1000°C. Available 330–356mm (rear). Warranty is 2 years on oil leaks and 10 years on appearance. Built for professional racing and repeated track days.

Caliper colour & finish
Painted colours (Red, Yellow, Gold, Black, Anodized Black) are included at no cost. Want an exact match to your car? Custom Color (+£150) paints the calipers to any Pantone code you supply (15–20 day lead time).
Polished Forged finishes are the flagship: a forged caliper given a mirror-polished surface treatment that shifts colour with the viewing angle. Beyond the looks, the polished surface dissipates heat better, resists rust and stands up to the weather. Choose Titanium (neochrome, +£350), Polished Gold (+£300) or Polished Silver (+£250). They look their best paired with a titanium centre bell. Care: clean only with a dilute neutral cleaner or water.
Candy colours (+£200) use a deep candy-paint and polishing process for a mirror-reflection, boutique finish — pick Teal, Blue, Red or Orange (shown below right).


Centre bells
The centre bell is the CNC-machined aluminium hat that joins the disc to the hub. The standard anodized centre bell is included. The Two-tone bell (+£200) adds an anodized accent ring — choose Red, Yellow, Orange, Purple or Silver right here at checkout. The Titanium centre bell (+£500) is a forged titanium bell (bolts not included) that finishes off the polished-forged look.

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