
XYZ Racing Hollow Rear Brake Kit — Audi A8 (D4 4H) (12 POINTS 8.0MM) (2010-2017)
SKU: XYZ-BRK-BKR-AU-14-A-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø380–421 mm
- Caliper pots8-pot
- Lead time10–15 working days
Fits Audi A8 (D4 4H) (12 POINTS 8.0MM) (2010-2017)
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Caliper render for this kit:

The D4-generation A8 hides its mass well. Audi’s aluminium spaceframe keeps the kerb weight honest for a full-size flagship, but there is still the better part of two tonnes pressing forward every time you haul this car down from a motorway cruise. On a nose-heavy quattro saloon the rear axle does the quieter half of the braking work, yet on repeated heavy stops it is often the first place a tired standard setup loses bite and pedal consistency.
The XYZ Racing Hollow Rear Brake Kit for the Audi A8 (D4 4H) answers that with a two-piece floating disc and a multi-piston caliper sized for the car’s weight. The design trims rotating and unsprung mass at the rear axle while keeping thermal capacity high, so a long Alpine descent or a string of hard stops does not cook the rear end the way a worn factory disc and pad will.
What this brake kit does for your 2010-2017 Audi A8 (D4 4H)
After fitting, the clearest change on the A8 is rear-axle composure when you stand on the pedal from speed. More thermal mass and better-vented discs mean the rear contribution stays stable as heat builds, which keeps the car settled rather than letting the nose dive harder as the rears fade. The two-piece floating disc handles thermal expansion without warping, so you get a cleaner, judder-free pedal over time. Choosing the Racing pad compound sharpens initial bite for harder driving, while the Sport and Street compounds keep things quiet and clean for daily use on a heavy luxury saloon.
About the Hollow Rear Brake Kit
This rear kit is built around a two-piece floating disc that mounts to its aluminium bell across 12 points, with 8.0mm fixings that shed weight without giving up clamping integrity. Taking material out of the rotating assembly reduces the mass spinning at each rear hub, which helps both heat shedding and the way the rear axle reacts to inputs. The floating layout lets the disc grow and shrink with temperature independently of the bell, the detail that keeps a heavy car’s brakes flat and consistent rather than warping into a pulsing pedal. The caliper is hollow-bodied as standard to keep weight low, with an optional Hollow Racing build for sustained hard use that drops the dust cover, is rated to 1000C and carries a two-year warranty. Pad compound is your call: Street for quiet, low-dust manners, Sport for a firmer everyday bite, or Racing for sustained hard use. Included painted caliper colours are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone for £150, premium polished-forged finishes in Titanium, Polished Gold and Polished Silver, and candy finishes in Teal, Blue, Red and Orange to match the car.
Fitment for the Audi A8 (D4 4H) (2010-2017)
This kit is specified for the D4 4H Audi A8 across the 2010 to 2017 model span and fits the rear axle. The 12 points 8.0mm reference describes the disc’s floating mount and fixing specification for this application. Confirm your exact chassis code and year before ordering.
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- A8 selectable caliper colours across painted, polished and candy finishes
- Added rear braking capacity and fade resistance for the 2010-2017 Audi A8
Pick your disc style, pad compound and caliper colour from the options above to build yours.
What’s in the kit
Rear axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 380–421 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 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.

Other products that fit this vehicle
Front & rear brake kits, coilovers and more for this car
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More XYZ products for the Audi A8 (D4 4H) (12 POINTS 8.0MM) appear here as the rest of the range publishes.