Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Audi A8 (D4 4H) (2010-2017)
SKU: XYZ-BRK-BKF-AU-29-A-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø380–444 mm
- Caliper pots8 / 12-pot
- Lead time10–15 working days
Fits Audi A8 (D4 4H) (2010-2017)
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Caliper render for this kit:
The D4 A8 presents a genuine engineering paradox: a saloon that tips the scales north of 1,900 kilograms yet handles with a precision significantly lighter cars struggle to match. Adaptive air suspension, standard quattro traction, and optional rear-wheel steering conspire to make the car feel planted and progressive at speed, which means drivers use that speed. The factory front brakes cope well in ordinary use, but the thermal headroom between a conservatively driven A8 and one exploiting the 4.0 TFSI or W12 performance is narrower than the standard specification comfortably handles.
Front-axle loading under sustained hard braking is the D4’s central brake consideration. Carrying a two-tonne saloon from high speed puts repeated demand on the front discs, and that demand compresses the fade margin quickly. The XYZ Racing front brake kit addresses this axle specifically: a front-axle pair of left and right calipers with matched two-piece floating discs, fitting the Audi A8 (D4 4H) from 2010 to 2017, with compounds that map to how the car is actually being driven.
What this brake kit does for your 2010-2017 Audi A8 (D4 4H)
The primary gain is a higher thermal ceiling at the front axle, significant given the D4’s kerb weight and the performance differential between entry-level and high-spec engine variants. The hollow-vane disc design sheds heat faster than a solid casting between stops, the lighter two-piece discs cut rotating and unsprung mass at the front, and braided lines hold the pedal firm where rubber hoses would swell. Street is the quiet, low-dust road default that maintains OE-comparable pedal behaviour for everyday use. Sport raises the operating temperature threshold, the sensible choice for A8 owners covering fast B-roads, mountain passes, or sustained high-speed distances where the car’s dynamics invite commitment. Racing is the track compound for continuous high-energy braking, working at sustained elevated temperatures rather than single-stop peaks. Calipers are hollow-bodied as standard, with a Hollow Racing upgrade for serious track use, rated to 1000C, no dust cover, two-year warranty.
About the Front Brake Kit
The kit is XYZ Racing’s front-axle braking upgrade, designed to extend the performance headroom of factory brake packages on heavier performance and grand touring vehicles. Covering the front position, the primary energy-absorption point across all D4 A8 engine configurations, it is offered in three pad compounds to match operating conditions rather than defaulting to a single specification. Street targets daily drivers seeking improved pedal consistency over the original setup; Sport is calibrated for higher operating temperatures without cold-bite compromising drivability in traffic; Racing sustains performance under the heat load of repeat-lap braking. Discs come in drilled or slotted face at the same price, with optional two-tone centre bells in five anodized colours or titanium at checkout. Included caliper colours are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone for £150 and premium polished-forged (Titanium, Polished Gold, Polished Silver) and candy finishes (Teal, Blue, Red, Orange) also available, so the kit integrates with or contrasts against the existing wheel and bodywork specification.
Fitment for the Audi A8 (D4 4H) (2010-2017)
This front brake kit is designed for the fourth-generation Audi A8, carrying internal chassis designation 4H, produced from 2010 through 2017. The kit covers the front axle across the engine range of that generation. Confirm your build specification using the fitment selector on this page, particularly if your car was supplied with factory brake upgrade options or sport packages that may alter the standard front brake dimensions.
What buyers also search for
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Three pad compounds, a full range of caliper colours, and a choice of disc style are set when you order. Build yours.
What’s in the kit
Front axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 380–444 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 8 / 12-pot
- 2×High-stiffness mounting brackets
- 2×Braided stainless steel brake lines
- 4×High-performance brake pads (1 set)
- 1×Fitting hardware & tools pack
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 286–380mm (front). 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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More XYZ products for the Audi A8 (D4 4H) appear here as the rest of the range publishes.