XYZ Racing Hollow Front Brake Kit — Porsche 991 GT3 (2013-2019)

The 991 GT3’s rear-engine layout does something instructive to braking dynamics: with the engine mass behind the rear axle, weight transfer under hard deceleration loads the front tyres disproportionately, and it is the front discs absorbing the heaviest thermal work in any braking zone. Porsche’s GT department engineered the 991 GT3 as a dual-mandate car, road-legal and circuit-capable, but its standard front brakes carry that compromise in their calibration. This XYZ Racing front big brake kit removes it.

Both 991 GT3 generations are covered: the 991.1’s 3.8-litre naturally aspirated flat-six era through 2016 and the 991.2’s 4.0-litre from 2017 onwards. In both, the front axle is where extended circuit use reveals its limits first, as repeated trail-braking from high speed builds heat faster than the standard setup dissipates it. The kit fits the front axle as a matched left and right pair.

What this brake kit does for your 2013-2019 Porsche 991 GT3

The hollow-vane disc draws heat through the rotor body rather than letting it pool at the pad-to-disc interface, keeping bite more consistent across a longer run of braking events. For a 991 GT3, consistent front brake feel is directly tied to the car’s mid-corner rotation under trail-braking; the rear-engine weight bias means any fade or inconsistency at the front alters the balance point mid-corner, not just the stopping distance. Three pad compounds, Street, Sport, and Racing, let you match the kit’s thermal range to actual use: Street is the quiet, low-dust compound bridging cold road runs, Sport handles fast-road and lighter track work, and Racing is calibrated for sustained elevated temperatures. Two-piece floating disc construction lets the friction ring grow and cool independently of the bell.

About the XYZ Racing Hollow Front Brake Kit

The kit centres on hollow-vane disc technology, a construction that creates internal galleries within the rotor to accelerate heat extraction beyond what conventional vented geometry alone achieves. The front-specific application is deliberate: this is where the 991 GT3’s braking energy concentrates under the load transfer of hard stops. Pad compound is selected at order, so the kit arrives configured for the car’s primary role, the three-compound range spanning road-biased Street through Sport to Racing for owners running sprint series or sustained track-day programmes. The forged caliper is hollow-bodied as standard, with an optional Hollow Racing upgrade for serious track use, rated to 1000C with no dust cover and a two-year warranty. Discs come drilled or slotted at the same price.

Included painted caliper colours are Red, Yellow, Gold, Black, and Anodized Black at no extra cost, confirmed at the same point. A Custom Color in any Pantone is available, plus premium polished-forged finishes (Titanium, Polished Gold, Polished Silver) and candy finishes (Candy Teal, Candy Blue, Candy Red, Candy Orange). The package addresses the front-axle demands of a rear-engine, high-output GT car across its full 2013-2019 production window.

Fitment for the Porsche 991 GT3 (2013-2019)

This front brake kit covers the full Porsche 991 GT3 production run, the 991.1 generation from 2013 to 2016 and the 991.2 from 2017 to 2019. Both generations share a compatible front-end architecture for this application. SKU XYZ-BRK-BKF-PO-019-FRONT.

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Pad compound, disc style, caliper colour, and centre-bell finish are all chosen when you order. The configurator sits above this copy.