Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Subaru IMPREZA (GT) MK5 (2017-2026)
SKU: XYZ-BRK-BKF-SU-18-B-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø330–444 mm
- Caliper pots6 / 8 / 12-pot
- Lead time10–15 working days
Fits Subaru IMPREZA (GT) MK5 (2017-2026)
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Caliper render for this kit:
The fifth-generation Impreza hatchback’s Global Platform chassis is a genuine step forward in torsional rigidity over the GJ generation it replaced, which makes the GT a more rewarding car front-to-rear and one that reveals the thermal limits of its standard front braking sooner than owners expect. Push the 2.0-litre on a track morning at Knockhill or a fast run through the Cairngorms and the front brakes are the first thing that softens. The XYZ Racing Hollow Front Brake Kit addresses that directly with larger rotors, hollow-vane construction for heat dispersal, and a three-compound pad choice that covers daily driving through to circuit specification.
Subaru’s Symmetrical AWD keeps the MK5 GT balanced into corners in a way front-driven hatches cannot replicate, but that stable platform means there is nowhere to hide when the front brakes begin to fade. Upgrading the front braking is the most direct way to preserve that composure across a full session, and this single-axle kit, a matched pair of front calipers and two-piece floating discs, does exactly that.
What this brake kit does for your 2017-2026 Subaru IMPREZA (GT) MK5
Larger-diameter front rotors increase the thermal mass available to absorb energy under braking, the core reason repeated heavy stops feel more consistent than with the standard setup. The hollow-vane disc takes that further by drawing cooling air through the rotor body so heat clears between corners rather than accumulating across a session. The two-piece floating discs pair an aluminium centre bell with an iron friction ring, holding the disc true through repeated heat cycles and trimming rotating mass at the wheel, which sharpens steering response on the SGP platform’s MacPherson front and multi-link rear, a setup that responds measurably to changes in unsprung weight. Braided stainless lines are included for a firmer pedal than rubber hoses that swell under load.
Three pad compounds let the same kit serve the car across its full range. Street is the quiet, low-dust road default; Sport adds bite and heat range for fast road with the occasional track afternoon; Racing is a full circuit compound for sustained high-temperature load, all without needing a pad swap between a weekend road trip and a track day.
About the Hollow Front Brake Kit
The hollow-vane name describes the disc’s internal ventilation. Cooling channels run through the rotor body and draw air across the friction surfaces while the wheel turns, so heat clears into the airstream rather than soaking into solid iron. The direct-fit application requires no modification to the original hub or caliper mounting geometry on the MK5 Impreza GT, and the calipers are hollow-body as standard for stiffness without excess weight, supplied as a left-and-right pair.
Discs come drilled or slotted at the same price, so you can choose on looks or wet-weather feel. Included caliper finishes are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color to any Pantone code for a small upcharge, matched for owners who want the finish to integrate precisely with the car’s exterior. Premium polished-forged finishes (Titanium, Polished Gold, Polished Silver) and candy finishes (Candy Teal, Candy Blue, Candy Red, Candy Orange) sit in a separate upgrade tier. Two-tone centre bells in five anodized colours, or a titanium bell, are selectable at checkout. For serious track use there is an optional Hollow Racing caliper, run without a dust cover, rated to 1000C and backed by a two-year warranty.
Fitment for the Subaru IMPREZA (GT) MK5 (2017-2026)
This kit is specified for the fifth-generation Subaru Impreza in the GT five-door hatchback configuration, covering the 2017 to 2026 production span, and fits the front axle as a left-and-right pair. The GT body designation distinguishes the hatchback variant from the GK sedan within the MK5 range. If your car is an early 2017 model, confirm your regional brake specification before ordering, as the first year of MK5 production occasionally carried regional fitment variations.
What buyers also search for
- Subaru Impreza MK5 GT brake upgrade for track days and spirited road driving
- 2017-2026 Impreza GT front big brake kit with Street, Sport and Racing pads
- Subaru Global Platform hatchback brake fade solution for sustained hard stops
- XYZ Racing hollow disc brake kit for fifth-generation Subaru Impreza
Pick your pad compound, disc style and caliper finish 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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