
XYZ Racing Hollow Front Brake Kit — Audi A4 B7 (2004-2008)
SKU: XYZ-BRK-BKF-AU-011-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø330–444 mm
- Caliper pots6 / 8 / 12-pot
- Lead time10–15 working days
Fits Audi A4 B7 (2004-2008)
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Caliper render for this kit:

The B7 A4 sits modestly in the Audi range, but quattro variants in particular carry serious nose weight: the longitudinal engine well forward of the front axle, all-wheel-drive hardware distributed behind it, and a front-biased mass that loads the brakes hard on any committed approach. Factory stoppers cope with routine driving, but sustained pressure, a fast alpine descent or a morning at a track day, reveals their ceiling. Pedal feel muddies, modulation narrows, and confidence erodes at exactly the moment you need it most.
The XYZ Racing front brake kit for the Audi A4 B7 is a front-axle upgrade: a matched pair of left and right front calipers with two-piece floating discs, built around a choice of three pad compounds so the specification can match how the car is actually used rather than defaulting to a single compromise.
What this brake kit does for your 2004-2008 Audi A4 B7
The two-piece floating discs reduce rotating and unsprung weight at the axle most heavily loaded during braking on the B7’s front-biased platform. Less rotating mass means quicker thermal recovery between stops, a firmer pedal under repeated hard use, and more consistent bite across a range of speeds. The hollow-vane disc design moves more air through the rotor body to shed heat between applications, and braided lines hold the pedal firm where rubber hoses would swell. Three pad compounds let owners match friction to use: Street is the quiet, low-dust road default across the full B7 engine line-up, Sport suits spirited fast-road work in the torquier quattro turbo variants, and Racing is the track compound for circuit conditions where rotor temperatures would otherwise overwhelm a road pad’s fade resistance. 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 defining element is the two-piece floating front disc: a lighter rotor that reduces overall mass without cutting swept area, which directly addresses the heat-cycle behaviour behind progressive fade during repeated hard stops. Because the rotors shed heat faster between applications, pedal feel stays firmer across a sequence of braking events rather than softening incrementally. 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. The three pad compounds extend the kit’s range from routine commuting through to track days, with the Racing grade designed to hold its friction coefficient at the temperatures the B7’s front-biased geometry generates under circuit conditions.
Fitment for the Audi A4 B7 (2004-2008)
This front brake kit covers the Audi A4 B7 generation across the 2004 to 2008 model years, encompassing both saloon and Avant body styles in front-wheel-drive and quattro configurations. Verify your existing front caliper specification before ordering, as brake hardware can vary across the B7 engine and trim range.
What buyers also search for
- Audi A4 B7 front brake upgrade for fast-road and track use
- B7 quattro A4 brake kit with selectable pad compound
- XYZ Racing two-piece front disc upgrade for Audi A4 2004-2008
- A4 B7 big brake kit with caliper colour options
- Audi A4 B7 brake fade solution for sustained spirited driving
Braking is the first thing you notice when a front-heavy chassis is working well and the first thing that exposes a limitation when it is not. Choose your pad compound, disc style and caliper colour when you order.
What’s in the kit
Front axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 330–444 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 6 / 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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