Big Brake Kit
XYZ Racing Hollow Rear Brake Kit — Subaru IMPREZA (GT) MK5 (2017-2026)
SKU: XYZ-BRK-BKR-SU-16-B-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø356–421 mm
- Caliper pots6 / 8-pot
- Lead time10–15 working days
Fits Subaru IMPREZA (GT) MK5 (2017-2026)
Added to basket ✓
Caliper render for this kit:
The Impreza (GT) MK5 carries its braking load differently from a front-driven hatch. Subaru’s symmetrical all-wheel drive keeps the rear axle planted and working hard under deceleration, so the back brakes earn their keep far more than the spec sheet suggests. This XYZ Racing Hollow Rear Brake Kit is built for that reality: a larger, lighter rear setup for the 2017-2026 Subaru Impreza GT that restores braking balance once you start leaning on the car down a fast B-road or on a damp track day.
It is a rear-axle upgrade, supplied as a matched pair of left and right corners, not a whole-car compromise. Bolted to the stiff Subaru Global Platform shell, it gives you a back end that bites cleanly and shrugs off the soft, heat-soaked pedal that creeps into the standard rear discs after a run of repeated hard stops.
What this brake kit does for your 2017-2026 Subaru Impreza (GT) MK5
The two-piece floating disc construction trims rotating and unsprung mass at the rear, which an AWD Impreza feels as crisper damper response and a calmer back end over mid-corner bumps under braking. Three pad compounds, Street, Sport and Racing, let you match bite and temperature range to how you actually drive, from commute to circuit. With the rear axle pulling its proper share of the work, the whole car settles earlier into a corner and holds a more neutral attitude on the brakes. Caliper finish runs from understated Black and Anodized Black to Gold, or a Custom Pantone, so the upgrade reads as deliberate behind the wheels.
About the XYZ Racing Hollow rear brake kit
The Hollow rear kit pairs a two-piece floating disc with a hollow-cast caliper as standard, shedding rotational mass while letting the friction ring expand against its bell to keep temperatures in check during sustained use. It is a position-specific rear setup engineered to rebalance braking on all-wheel-drive platforms where the rear contributes meaningfully to stopping. The pad selection spans a Street road compound, a faster-warming Sport compound for fast road and the odd track day, and a Racing compound for track heat. The caliper is painted Red, Yellow, Gold, Black or Anodized Black at no extra cost, with a Custom Color in any Pantone for £150 plus premium polished-forged and candy finishes; disc faces are drilled or slotted at the same price, and the centre bell upgrades to a five-colour anodized two-tone or titanium at checkout. A Hollow Racing caliper rated to 1000C with a two-year warranty is available for dedicated track use. The intent is a stronger, more consistent rear bite that complements a front upgrade rather than fighting it.
Fitment for the Subaru Impreza (GT) MK5 (2017-2026)
This kit is matched to the fifth-generation Impreza GT hatchback (2017-2026) on the Subaru Global Platform, fitting the rear axle of the symmetrical all-wheel-drive chassis. It is sold as a rear-position kit; confirm your build year falls within the 2017-2026 span before ordering.
What buyers also search for
- Subaru Impreza GT MK5 rear brake upgrade for fast road and track use
- Lightweight two-piece floating rear discs for the 2017-2026 Impreza AWD chassis
- Subaru Impreza brake kit with Street, Sport and Racing pad options
- Rear big brake kit to rebalance braking on the symmetrical AWD Impreza
- Coloured caliper options for the Subaru Impreza GT MK5 rear axle
Choose your pad compound and caliper colour from the options above and build your spec.
What’s in the kit
Rear axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 356–421 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 6 / 8-pot
- 2×High-stiffness mounting brackets
- 2×Braided stainless steel brake lines
- 4×High-performance brake pads (1 set)
- 1×Fitting hardware & tools pack
Parking brake: Electronic parking brake (EPB) compatible.
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 330–356mm (rear). 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.
Same car
Other products that fit this vehicle
Front & rear brake kits, coilovers and more for this car
