
XYZ Racing Hollow Rear Brake Kit — Mercedes Benz E CLASS W124 500 E (1991-1993)
SKU: XYZ-BRK-BKR-ME-078-A-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø380–421 mm
- Caliper pots8-pot
- Lead time10–15 working days
Fits Mercedes Benz E CLASS W124 500 E (1991-1993)
Added to basket ✓
Caliper render for this kit:

The W124 500 E carries its V8 and near-1.7-tonne kerb weight in a way few period saloons did, and all of that mass loads the rear axle every time you brake hard from speed. This XYZ Racing Hollow Rear Brake Kit for the Mercedes Benz E CLASS W124 500 E (1991-1993) goes straight at that rear-axle workload, replacing the factory setup with a stiffer, lighter, better-cooled package.
For a Porsche-assembled Q-car that owners now run as a fast, usable modern classic, the rear of the braking system matters more than most people expect. Specify it alongside a front kit and the 500 E sheds speed with the composure the chassis always deserved.
What this big brake kit does for your 1991-1993 Mercedes Benz E CLASS W124 500 E
Fit this kit and the first thing you feel on the 500 E is a firmer, more progressive pedal when you lean on it. The hollow-vane two-piece disc trims rotating and unsprung mass at the rear, which sharpens how quickly the axle reacts and eases the job of the self-levelling rear suspension. Three pad compounds, Street, Sport and Racing, let you set the rear bite to match how you actually drive, from motorway miles through committed back-road work to circuit use. On a heavy V8 saloon, getting front and rear braking into balance is what stops the nose diving and keeps the car from running wide into a corner. The result is a 500 E that pulls up straighter and stays planted under repeat stops.
About the Hollow rear brake kit
XYZ Racing’s Hollow rear brake kit takes its name from a weight-saving disc construction that removes material where it adds mass rather than strength, cutting the weight spinning at each rear wheel on a two-piece floating rotor. Less rotating mass means heat builds and clears more evenly, so braking stays consistent instead of going soft when worked. The kit is offered with three pad compounds: a Street pad for quiet, low-dust everyday use, a Sport compound for harder road driving and the odd track day, and a Racing compound for sustained high-temperature work. The caliper is a hollow-body design 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. Included caliper colours are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone shade available for an upcharge and premium polished-forged or candy finishes on offer too, so the hardware can sit discreetly behind the wheels or read as part of the build. Every part is specified for the rear axle of the 500 E rather than adapted from a generic fitment.
Fitment for the Mercedes Benz E CLASS W124 500 E (1991-1993)
This kit is built specifically for the rear axle of the Mercedes Benz E CLASS W124 500 E across the 1991-1993 model years, supplied as a matched pair of rear calipers and discs. It suits the wide-arch, Porsche-built 500 E rather than the standard W124 saloons of the period. Check your build year against the range above before you order.
What buyers also search for
- Mercedes 500 E W124 rear brake upgrade for a heavy V8 saloon
- W124 500 E hollow kit with Street, Sport and Racing pad options
- 500 E big brake kit caliper colours from included finishes to custom Pantone
- Mercedes Benz E CLASS W124 rear braking upgrade for fast-road and classic use
- W124 500 E rear big brake kit to pair with a matching front setup
Choose your disc style, pad compound and caliper colour above, then build your 500 E rear kit when you order.
What’s in the kit
Rear axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 380–421 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 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: Retains your original (OE) handbrake.
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
