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Big Brake Kit

XYZ Racing Hollow Rear Brake Kit — Bmw 5 SERIES G 30 (NON M5) (2017-2026)

SKU: XYZ-BRK-BKR-BM-078-REAR

  • IncludesRear axle pair (2 discs + 2 calipers)
  • PositionRear
  • Disc Ø356–421 mm
  • Caliper pots6 / 8-pot
  • Lead time10–15 working days

Fits Bmw 5 SERIES G 30 (NON M5) (2017-2026)

Brake pad compound

Street: quiet, low-dust, strong cold bite for road driving. Sport: higher temperature range and more bite for fast road and occasional track. Racing: maximum fade resistance for sustained track use (noisier and dustier cold). Match the pad to how hard you actually brake.

Disc size

Caliper grade

Hollow is the standard caliper: a lighter hollow-body forged caliper with a dust cover and a 5-year warranty. Hollow Racing drops the dust cover for sustained high-temperature use (rated to 1000°C, 2-year warranty) — the track-grade choice.

Caliper colour

Painted colours are included. Polished-forged finishes are mirror-polished forged calipers (Titanium, Gold, Silver); candy colours are a deep, mirror-reflection paint. Both are premium upgrades — fuller detail further down the page.

Painted — includedTell us the exact Pantone (PMS) code you want the calipers painted.Polished forgedCandy
Disc style

Drilled discs (cross-drilled holes) vent gas and water and look aggressive; slotted discs (surface grooves) wipe the pad face clean and resist fade under sustained hard use. Same price — choose on looks or how you drive.

Centre bell

The centre bell is the CNC-machined aluminium hat that joins the disc to the hub. Standard anodized is included; a two-tone bell adds an anodized accent ring in your choice of colour; titanium is the lightest, forged option.

Carbon-ceramic rotor

Carbon-ceramic rotors are a special-order track upgrade: far lighter than steel, fade-resistant at extreme temperatures and extremely long-lived. The price follows the disc size you choose above. The standard two-piece steel rotor is included.

Configured price£3,000.00Inc. VAT

Lead time: 10–15 working days from payment


£3,000.00

Made to order. Full payment is taken at checkout. Production begins once payment is confirmed.

Pay by card, Apple Pay, Google Pay — or Klarna on eligible orders.

Caliper render for this kit:

XYZ Racing Hollow Rear Brake Kit — Bmw 5 SERIES G 30 (NON M5) (2017-2026) — 356 mm
356 mm

The G30 5 Series carries serious mass over its rear axle, and on a long-wheelbase executive saloon that weight keeps working the back brakes well after the nose has taken the initial bite. The XYZ Racing Hollow Rear Brake Kit gives the 2017-2026 5 Series a larger, lighter rear stopper designed to shed heat on hard fast-road runs and the occasional circuit lap, where the standard rear discs start to feel overwhelmed.

This is the rear half of the braking equation for owners of the non-M5 range, from the 520d through the 530i, 540i and the quick M550i xDrive. Supplied as a pair of left and right rear calipers and two-piece floating discs, it targets the heavier, faster variants whose factory rear brakes were specified for comfort and motorway cruising rather than repeated heavy stops, and that is exactly the gap this kit closes.

What this brake kit does for your 2017-2026 Bmw 5 Series G 30 (NON M5)

Fit the rear kit and the first thing you feel is a steadier pedal under repeated braking, because the larger swept area and two-piece floating disc design pull heat away faster than the standard setup, with braided lines holding the bite. On a 1.7 to 1.9 tonne saloon that heat management is what keeps a long downhill or a string of fast corner entries from cooking the rear pads. The three pad compounds let you match the car to its job: Street for daily commuting, Sport for spirited road use and occasional track days, and Racing for track days where bite and fade resistance matter more than cold performance. Better rear brake balance also settles the back of the car under trail braking, so the G30 turns in cleaner rather than running wide. Painted caliper finishes, from a discreet Black to Red, Yellow, Gold or Anodized Black, fill the space behind larger 5 Series wheels at no extra cost.

About the Hollow rear brake kit

The Hollow rear brake kit is built around two-piece floating discs: a vented friction ring on an alloy bell that trims rotating and unsprung mass at the back axle while opening up extra cooling paths through the rotor. Less rotating mass means the rear brakes shed heat and recover between stops more readily than a solid factory disc of the same size, and discs can be specified drilled or slotted at the same price. The caliper clamps a wider, taller pad than standard, which is what gives the kit its extra heat capacity on a heavy saloon, and the caliper body is hollow-cast as standard – a Hollow Racing upgrade for serious track use drops the dust cover for a 1000C rating and a two-year warranty. Buyers choose one of three pad compounds when they order – Street, Sport or Racing – so the same hardware suits a daily-driven 520d or a track-curious 540i. Caliper colour is selectable across painted Red, Yellow, Gold, Black and Anodized Black at no extra cost, with Custom Color in any Pantone for £150, premium polished-forged Titanium, Polished Gold and Polished Silver, and candy Teal, Blue, Red and Orange; centre bells upgrade to two-tone anodized in five colours or to titanium. The finish reads as factory-subtle or as a clear visual statement depending on the wheel.

Fitment for the Bmw 5 Series G 30 (NON M5) (2017-2026)

This kit is fitted to the rear axle of the Bmw 5 Series G30 saloon, covering the 2017 to 2026 model years across the non-M5 range. It is specified for the standard and xDrive variants and is not intended for the F90 M5, which runs its own braking hardware. Pad compound, disc style and caliper colour are all chosen when you order.

What buyers also search for

  • Bmw 5 Series G30 rear big brake upgrade for fast-road and occasional track use
  • G30 540i and M550i rear brake kit with Racing pad compound for heat resistance
  • Bmw 5 Series rear brake kit that improves brake balance under hard stops
  • Two-piece floating disc rear brake kit for the 2017-2026 5 Series with caliper colour choices
  • Non-M5 G30 rear brake upgrade that keeps daily driveability

Pick your pad compound, disc style and caliper colour above and build your G30 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 — 356–421 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.

Hollow Racing caliper

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).

Polished forged caliper finishes
Candy caliper colours

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.

Two-tone anodized centre bells
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 30 (NON M5) appear here as the rest of the range publishes.