XYZ Racing Hollow Front Brake Kit — Audi A8 4.2 TDI 4WD (2002-2009)

The D3 A8 quattro in 4.2 TDI specification is one of the heavier cars in its segment: a full-size saloon with all-wheel drive, a V8 diesel sending substantial torque through all four wheels, and a kerb weight that makes genuine demands of the front axle every time speed needs to be shed. Factory braking hardware on the 2002-2009 platform was engineered to cope with that mass, but two decades of use have a way of diminishing the margins original spec left.

The XYZ Racing front brake kit for the Audi A8 4.2 TDI 4WD addresses the front axle directly. It is a front-axle pair: left and right front calipers with matched two-piece floating discs, and three pad compounds so the spec can match the car’s actual use cycle rather than defaulting to a generic OE replacement.

What this brake kit does for your 2002-2009 Audi A8 4.2 TDI 4WD

On a car of this mass, the front brakes absorb the majority of deceleration, and the D3 A8’s quattro layout does nothing to redistribute that load: it sends torque to all four driven wheels but leaves the front axle to absorb the inertia when the brakes go on. Larger-diameter two-piece discs increase mechanical advantage at the wheel, reducing pedal effort and the temperature the rotor must shed in repeated hard stops. The hollow-vane construction promotes airflow through the disc under rotation, which matters on a car that covers long motorway distances then needs to lose speed quickly at junctions or on sweeping slip roads. The lighter two-piece discs also 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 daily default, Sport serves the fast-road A8 owner, and Racing is the track compound for occasional circuit use. 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’s two-piece floating disc uses hollow-vane internal geometry that draws cooling air through the disc during rotation rather than relying solely on surface area for heat dissipation. The front kit for the D3 A8 is configured for the 2002-2009 platform’s hub and caliper carrier dimensions. Three pad compounds are selectable: Street for a refreshed OE-feel result, Sport for drivers who push the A8 hard on public roads and dual carriageways, and Racing for track or competition use. 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, a consideration worth making on the D3 A8 where large discs sit visibly behind the factory alloy design. The kit covers the front axle of the quattro 4WD A8 4.2 TDI across the full 2002 to 2009 window.

Fitment for the Audi A8 4.2 TDI 4WD (2002-2009)

This front brake kit is built for the D3-generation Audi A8 in 4.2 TDI quattro all-wheel-drive specification, covering the 2002 model year through to 2009. Fitment geometry follows the hub and caliper carrier dimensions of the D3 platform throughout the run; confirm your model year sits within the 2002-2009 window before ordering.

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Select your pad compound (Street, Sport or Racing), disc style and caliper colour when you order.