Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Subaru IMPREZA GRB GH7 (2007-2013)
SKU: XYZ-BRK-BKF-SU-05-D-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø286–444 mm
- Caliper pots4 / 6 / 8 / 12-pot
- Lead time10–15 working days
Fits Subaru IMPREZA GRB GH7 (2007-2013)
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Caliper render for this kit:
The GH7 Impreza runs a naturally aspirated 2.0 with standard single-piston sliding calipers at the front, adequate for everyday use, undersized once you start pushing the platform. Fast A-road driving in the wet, a trackday morning repeating the same heavy-braking zone, even a spirited continental run: the factory setup builds heat quickly and starts hedging. The XYZ Racing Hollow Front Brake Kit for the Subaru Impreza GRB and GH7 exists to close that gap.
For GRB STI owners the equation shifts, factory six-pots are credible hardware, but this kit adds the flexibility of three configurable pad compounds the fixed factory spec does not offer. It is a single-axle kit, a matched pair of front calipers and two-piece floating discs for the left and right corners, with compound, disc style and caliper finish all chosen when you order, so the setup reflects what the car actually does rather than what it did when it left Gunma.
What this brake kit does for your 2007-2013 Subaru Impreza GRB GH7
The two-piece floating discs are the first meaningful change: an aluminium centre bell bolted to an iron friction ring cuts rotating mass at the front axle, so the suspension is not fighting inertia on the way into a corner. On an AWD platform where front-axle grip is never surplus, that has a real effect. The hollow-vane disc draws cooling air through the rotor body so heat sheds continuously, keeping temperatures in the range where your chosen pad works as it should. Braided stainless lines are included for a firmer, more repeatable pedal than rubber hoses that swell under load.
Three pad compounds let you run a properly matched setup. Street is the quiet, low-dust road default that retains cold bite for road driving; Sport adds bite and heat range for fast road with the occasional track day; Racing is a full circuit compound that holds consistent friction across the temperature range a session generates. Choose by how the car is used, not by a single compromise.
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, letting the kit handle back-to-back hard stops without fade creeping in. The calipers are hollow-body as standard for stiffness without excess weight, and the front-only fitment works as a direct upgrade for the GRB and GH7 front axle, 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. 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 GRB GH7 (2007-2013)
This front brake kit is confirmed for the Subaru Impreza GRB and GH7 chassis, covering the 2007 to 2013 production run of the fourth-generation hatchback in both the naturally aspirated GH7 variant and the WRX STI GRB, and fits the front axle as a left-and-right pair. Front axle fitment only, so verify rear brake compatibility separately if you are planning a full-axle refresh.
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Choose pad compound, disc style and caliper finish when you order to complete your kit.
What’s in the kit
Front axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 286–444 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 4 / 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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More XYZ products for the Subaru IMPREZA GRB GH7 appear here as the rest of the range publishes.