Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Bmw 5 SERIES G 31 5 SERIES (2017-2026)
SKU: XYZ-BRK-BKF-BM-79-A-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø356–444 mm
- Caliper pots6 / 8 / 12-pot
- Lead time10–15 working days
Fits Bmw 5 SERIES G 31 5 SERIES (2017-2026)
Added to basket ✓
Caliper render for this kit:
The G31 5 Series Touring carries more on its front axle than the saloon it shares a platform with. Cargo load in the boot, rear passengers, and the estate body’s own additional mass all compress forward under hard deceleration. Weight-transfer physics mean the front brakes absorb the heaviest workload, and on a car with the G31’s substantial kerb weight, that demand accumulates quickly through a sequence of corners or a long descent.
This XYZ Racing front big brake kit for the BMW 5 Series G31 (2017-2026) directly addresses that front-axle load. Fitted as a matched pair of front calipers and discs, it brings three pad compounds, Street, Sport, and Racing, so the same hardware serves across different use cases, with a caliper finish menu to match factory wheels or set a deliberate contrast.
What this brake kit does for your 2017-2026 Bmw 5 Series G 31 5 Series
The larger disc diameter extends the braking moment arm, which translates to improved fade resistance across the repeated, loaded deceleration events that a G31 Touring generates naturally, particularly on the B-road cruises and motorway runs where sustained speed management, not just single-corner stopping, is the real test. The two-piece floating disc with its hollow-vane rotor reduces rotating unsprung mass at the front axle, improving how the front suspension tracks the road between braking events and keeping brake balance steady.
Street is the quiet, low-dust compound for daily motorway and city use. Sport adds bite for spirited fast-road driving with the occasional track day. Racing covers owners who put the G31 on circuit and want the friction brakes working hard without leaning on any mild-hybrid regeneration. Caliper colours start with the no-cost painted options of Red, Yellow, Gold, Black, and Anodized Black. A Custom Color in any Pantone is £150, with premium polished-forged Titanium, Polished Gold, and Polished Silver, or candy Teal, Blue, Red, and Orange.
About the Hollow Front Big Brake Kit
The kit uses a hollow-vane disc geometry designed to dissipate heat faster than a conventional vented disc while shedding rotating mass from the front corner, two goals that work in the same direction on an estate platform where front brake temperatures and unsprung weight both warrant attention. The larger-diameter two-piece floating disc reduces the caliper clamping force required for a given deceleration and spreads thermal load over a greater swept area, with braided lines holding a firm pedal under heat. The caliper is a hollow-body forged unit as standard, with an optional Hollow Racing upgrade for serious track use that drops the dust cover, is rated to 1000C, and carries a two-year warranty. Discs come drilled or slotted at the same price, and centre bell upgrades are available two-tone in five anodized colours or in titanium. Compound and colour are selected when you order.
Fitment for the Bmw 5 Series G 31 5 Series (2017-2026)
This front big brake kit is confirmed for the BMW 5 Series G31 Touring across the full 2017-2026 production run, covering all engine variants built on that generation’s common front-suspension architecture. The kit is a front-axle fitment only; rear brake specification is unchanged.
What buyers also search for
- BMW G31 5 Series Touring front brake upgrade with Sport and Racing pad compound options
- BMW 5 Series G31 big brake kit for fade resistance on sustained fast-road and cross-country use
- G31 estate front brake upgrade with hollow-vane disc for reduced rotating unsprung mass
- BMW 5 Series G31 2017-2026 big brake kit with multi-finish caliper selection
- XYZ Racing front brake kit for BMW G31 5 Series Touring
Select your pad compound and caliper colour from the options above to build yours.
What’s in the kit
Front axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 356–444 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.
Same car
Other products that fit this vehicle
Front & rear brake kits, coilovers and more for this car
-
More XYZ products for the Bmw 5 SERIES G 31 5 SERIES appear here as the rest of the range publishes.