
XYZ Racing Hollow Rear Brake Kit — Mercedes Benz B CLASS W247 (Rr Multi-Link Suspension) (2019-2026)
SKU: XYZ-BRK-BKR-ME-88-C-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø330–421 mm
- Caliper pots6 / 8-pot
- Lead time10–15 working days
Fits Mercedes Benz B CLASS W247 (Rr Multi-Link Suspension) (2019-2026)
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Caliper render for this kit:

The W247 B-Class carries its mass high and well forward: a front-drive MFA2 platform with the engine over the nose and a tall, practical body that throws load onto the front axle every time you brake. On the multi-link rear cars the back axle finally has the geometry to do meaningful work, yet the factory rear discs are sized for school runs, not for scrubbing a loaded tourer down from motorway speed time and again. This XYZ Racing Hollow Rear Brake Kit for the Mercedes Benz B Class W247 (2019-2026) goes straight at that rear-axle shortfall.
The Hollow rear kit pairs a lightweight two-piece disc with a fixed caliper to add thermal headroom exactly where the standard arrangement starts to fade. It is the back half of a balanced upgrade, supplied as a matched pair of rear calipers and discs that lets the multi-link rear contribute its share of the stop instead of leaving everything to the front.
What this big brake kit does for your 2019-2026 Mercedes Benz B Class W247
The first thing you notice is a firmer, more progressive pedal that holds its travel as the discs heat. The hollow-vane disc face sheds heat faster and trims rotating mass at the rear hub, so the back axle settles quicker over crests and through quick direction changes. With three pad compounds to choose from, you can set the rear bite to match how you actually drive the car: Street for quiet, low-dust daily stopping, Sport for harder fast-road and occasional track use, and Racing as the full track compound. Because the kit targets the rear specifically, it also helps the W247 sit flatter under heavy braking rather than diving hard onto its nose.
About the XYZ Racing Hollow brake kit
The Hollow line is built around a two-piece floating disc with a hollowed vane profile that drops rotating weight and opens up airflow across the friction surface, the two things that decide how long a rear brake resists fade. The fixed caliper is hollow-body as standard and clamps more evenly than a sliding factory unit, which sharpens pedal feel and pad wear; a Hollow Racing upgrade adds a dust-cover-free, 1000C-rated caliper with a two-year warranty for serious track use. The three-stage pad menu of Street, Sport and Racing means the same hardware suits a comfortable road setup or an aggressive friction package without changing the caliper. Included caliper finishes run Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone for £150, plus premium polished-forged options in Titanium, Polished Gold and Polished Silver and candy finishes in Teal, Blue, Red and Orange. Discs are drilled or slotted at the same price, with two-tone centre bells in five anodized colours or titanium selectable when you order. It is a focused rear package designed to bring the back axle’s braking up to the standard of the chassis it sits under.
Fitment for the Mercedes Benz B Class W247 (2019-2026)
This kit is specified for the W247-generation B-Class fitted with the multi-link (4-link) rear suspension, covering the 2019 to 2026 model years. Confirm your car runs the multi-link rear rather than the torsion-beam axle before ordering, as the mounting geometry differs between the two. Set your pad compound, caliper finish and disc style using the options above.
What buyers also search for
- Mercedes B Class W247 rear brake upgrade for repeated hard stops
- W247 multi-link rear big brake kit with hollow-vane discs
- B Class W247 rear caliper kit in red, yellow, gold or black
- Mercedes Benz B Class rear brake pads in Street, Sport or Racing compound
- W247 B-Class braking upgrade that keeps daily refinement
Choose your pad compound, caliper finish and disc style, and the configurator above will build your W247 rear brake kit.
What’s in the kit
Rear axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 330–421 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.

Other products that fit this vehicle
Front & rear brake kits, coilovers and more for this car
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More XYZ products for the Mercedes Benz B CLASS W247 (Rr Multi-Link Suspension) appear here as the rest of the range publishes.