Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Bmw 3 SERIES G 21 (2WD/4WD) (2019-2026)
SKU: XYZ-BRK-BKF-BM-89-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 3 SERIES G 21 (2WD/4WD) (2019-2026)
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Caliper render for this kit:
The G21 Touring carries more mass than the G20 saloon from the outset: estate body, higher kerb weight, and xDrive hardware on all-wheel-drive variants loading the front axle with additional rotating mass to manage. Under repeat hard braking, stock front discs on these cars reveal their limits quickly; the M340i’s 374bhp arrives at speed before the standard brakes are ready for it.
This XYZ Racing front big brake kit is built for the full G21 range, both rear-wheel-drive and xDrive configurations, covering the 2019 to 2026 build window. It is a single-axle upgrade, a matched pair of front calipers and discs. Three pad compounds and a full range of caliper finishes mean the upgrade works whether the car is a fast-road Touring or a circuit-day machine doing real work.
What this brake kit does for your 2019-2026 Bmw 3 Series G21 (2WD/4WD)
Two-piece floating disc construction trims rotating mass at the front axle and accelerates heat dissipation between braking events, with hollow-vane internals drawing air through the disc body and an aluminium centre bell that lets the friction ring expand cleanly under heat. On the xDrive G21, where drivetrain inertia and weight distribution already place added demands on the front brake hardware, improved thermal management translates directly into more consistent pedal feel under sustained deceleration. The shift away from fade and towards repeatable, controlled bite is most apparent on long downhill sections, precisely the scenario where estate variants tend to see full use. Caliper colour makes the installation read clearly through the G21’s alloy spokes rather than disappearing behind them.
About the Hollow Front Brake Kit
The XYZ Racing caliper is built on a hollow body as standard, an approach that reduces rotating mass the front wheel bearings and suspension must work against while the disc’s hollow-vane internals improve airflow through the body during sustained hard use. It suits the G21’s heavier platform well: less unsprung mass at the front axle improves both steering response and the rate at which heat leaves the disc between braking events.
The kit spans three pad compounds, so the compound can be matched to actual use rather than defaulted to a single-grade compromise. Street is the quiet, low-dust compound for consistent road feel and wet-weather predictability. Sport adds sharper initial bite and heat range for spirited fast-road driving. Racing is for sustained, high-temperature circuit use where fade resistance is the primary demand. Discs come drilled or slotted at the same price, and the centre bell can be specified two-tone in five anodized colours or in titanium. Caliper colour is painted at no cost in Red, Yellow, Gold, Black, or Anodized Black; Custom Color matches any Pantone for £150; and premium polished-forged (Titanium, Polished Gold, Polished Silver) and candy finishes (Candy Teal, Candy Blue, Candy Red, Candy Orange) take the look to show grade. The Hollow Racing caliper upgrade (no dust cover, rated 1000C, two-year warranty) and braided lines suit serious track use.
Fitment for the Bmw 3 Series G21 (2019-2026)
This front big brake kit fits the BMW 3 Series G21 Touring across the full 2019 to 2026 production window, covering both the rear-wheel-drive drivetrain and xDrive all-wheel-drive variants. Confirm your build date, engine designation, and drivetrain when configuring; coverage spans the full G21 range from 320i and 320d through to the M340i and M340d derivatives.
What buyers also search for
- BMW G21 Touring front brake upgrade for fast-road and track-day use
- BMW 3 Series G21 big brake kit for 2WD and xDrive variants
- XYZ Racing hollow-vane front brake kit for BMW G21 2019 to 2026
- BMW G21 M340i brake fade solution with Sport and Racing pad options
- BMW 3 Series Touring front caliper upgrade with custom colour choice
Pick your pad compound, caliper colour, disc style, and centre bell from the options above, and confirm your build year and drivetrain when you order.
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.
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More XYZ products for the Bmw 3 SERIES G 21 (2WD/4WD) appear here as the rest of the range publishes.