Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Mercedes Benz B CLASS W247 (2019-2026)
SKU: XYZ-BRK-BKF-ME-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 Mercedes Benz B CLASS W247 (2019-2026)
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Caliper render for this kit:
The W247 B-Class sits on the MFA2 architecture it shares with the A-Class family, but its taller MPV body and higher kerb weight push more mass forward and raise the centre of gravity, a combination that loads the front axle harder under braking than the standard hardware was designed to absorb repeatedly. The factory setup covers daily use without drama, but sustained braking on a fast B-road or a track day session reveals where the limits are.
The XYZ Racing front brake kit for the Mercedes Benz B Class W247 (2019-2026) addresses this directly. A matched pair of forged front calipers and two-piece floating discs, three pad compounds, Street, Sport, and Racing, and a range of painted caliper colours let the same kit serve different use cases and be chosen to complement the car rather than clash with it.
What this brake kit does for your 2019-2026 Mercedes Benz B Class W247
The W247’s front-wheel-drive layout and forward mass bias mean the front axle handles the bulk of the braking work on every corner entry. The two-piece floating discs improve thermal management compared to a conventional vented disc and let the friction ring expand on its alloy bell without coning, reducing the fade that builds during repeated braking events, noticeable on back-to-back corners or a sustained downhill section. The Street compound keeps cold-start manners predictable and dust low for everyday use; the Sport compound sharpens initial bite without the temperature dependency of a race specification; the Racing compound maintains its friction coefficient at the elevated disc temperatures that repeat hard stops generate. Braided lines firm the pedal, and painted caliper finishes, Red, Yellow, Gold, Black, or Anodized Black at no extra cost, allow the hardware to sit neatly behind 17-inch or larger wheels without looking like an afterthought. Discs are available drilled or slotted at the same price.
About the Hollow Front Brake Kit
The caliper is a hollow-body forging as standard, reducing rotating and unsprung mass without sacrificing rigidity. For dedicated track days there is an optional Hollow Racing upgrade, with no dust cover, a 1000C rating, and a two-year warranty. The two-piece floating discs improve airflow through the disc body and let the ring grow independently of the bell, addressing the heat accumulation and distortion that drive fade under sustained use, and braided lines remove the give of rubber hoses. The three-compound pad selection is central to the kit’s flexibility: the same disc and caliper can be specified when you order for quiet road-biased daily use, mixed road and circuit work, or dedicated track days, rather than committing to one envelope at the expense of another. Caliper finish runs five no-cost colours, Red, Yellow, Gold, Black, and Anodized Black, with a custom Pantone match for £150, premium polished-forged finishes in Titanium, Polished Gold, and Polished Silver, and candy finishes in Teal, Blue, Red, and Orange. Centre bells can be specified two-tone or titanium. The front-specific scope of this kit concentrates the upgrade precisely where the W247’s weight distribution demands it.
Fitment for the Mercedes Benz B Class W247 (2019-2026)
This kit is confirmed for the Mercedes Benz B Class W247 chassis across the 2019 to 2026 production span. It is a front-axle fitment. Before ordering, verify wheel clearance against your fitted wheel size: caliper dimensions on a big brake fitment require confirmation against the inner barrel of your specific rim.
What buyers also search for
- Mercedes Benz B Class W247 front brake upgrade for fast-road and track use
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- W247 front brake kit with Racing pad option for sustained heat resistance
Select your pad compound, disc style, and caliper colour from the options above and configure yours before adding to cart.
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 Mercedes Benz B CLASS W247 appear here as the rest of the range publishes.