
XYZ Racing Hollow Front Brake Kit — Porsche 991 GT2 RS (2016-2019)
SKU: XYZ-BRK-BKF-PO-19-B-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø400–444 mm
- Caliper pots8 / 12-pot
- Lead time10–15 working days
Fits Porsche 991 GT2 RS (2016-2019)
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Caliper render for this kit:

The 991 GT2 RS’s rear-biased weight distribution shifts forward aggressively under braking, loading the front axle with a deceleration force that the chassis’s short wheelbase translates into sharp pitch behaviour. Repeated braking zones on circuit expose thermal limits quickly; the front discs are working against a car that, by architecture, asks a great deal of them on the approach to any corner.
This XYZ Racing front big brake kit brings a steel disc solution to the 991 GT2 RS (2016-2019), built to manage heat between zones rather than accumulate it. Three pad compounds, Street, Sport, and Racing, let you specify the friction characteristic for the conditions you are actually operating in. The kit fits the front axle as a matched left and right pair with two-piece floating discs.
What this brake kit does for your 2016-2019 Porsche 991 GT2 RS
The hollow-vane disc drives airflow through the rotor body, extracting heat that would otherwise build to the point of fade on a car this powerful running sustained circuit sessions. On a rear-engined, rear-wheel-drive platform like the GT2 RS, front brake consistency matters throughout a stint; fade that shifts your braking reference mid-approach disrupts the balance at precisely the moment you need it most. The Racing compound holds friction at the sustained temperatures generated by repeated hard stops; Sport keeps initial bite progressive from cold without sacrificing response on the open road; Street is the quiet, low-dust compound for road miles between track outings. Two-piece floating disc construction lets the friction ring expand and cool independently of the bell, which is what keeps that reference fixed lap after lap.
About the Hollow Front Brake Kit
The hollow designation refers to the internal vane structure of the disc, a construction that maximises heat extraction by channelling airflow through the rotor rather than relying on thermal mass alone. That approach keeps disc operating temperatures more consistent across a session, which matters when the GT2 RS’s 700-odd brake horsepower is loaded repeatedly into the same braking zone. Three compounds span the range: Street suits owners wanting a step up on OE without a track-specific spec; Sport targets fast-road use and occasional circuit days where cold bite still matters; Racing is the track compound for sustained high-temperature operation where fade resistance takes priority. 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. 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).
Fitment for the Porsche 991 GT2 RS (2016-2019)
This is a front axle application for the Porsche 991 GT2 RS, covering the full production run from 2016 to 2019. Verify wheel clearances against your specific rim specification before ordering; the GT2 RS came with centre-lock wheels as standard, and spoke geometry on aftermarket alternatives varies considerably across suppliers.
What buyers also search for
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- 991 GT2 RS front brake disc replacement with improved heat management for sustained track use
Pad compound, disc style, caliper colour, and centre-bell finish are all chosen when you order. The configurator sits above this copy.
What’s in the kit
Front axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 400–444 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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