
XYZ Racing Hollow Rear Brake Kit — Bmw 3 SERIES F 80 M3 SEDAN (OE185) (2014-2018)
SKU: XYZ-BRK-BKR-BM-081-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø380–421 mm
- Caliper pots8-pot
- Lead time10–15 working days
Fits Bmw 3 SERIES F 80 M3 SEDAN (OE185) (2014-2018)
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Caliper render for this kit:

The F80 M3 leans on its rear axle harder than any M3 sedan before it. The S55 twin-turbo straight-six and active M differential load the back of the car on corner entry and again on exit, and the standard rear discs were never specified with repeat track sessions in mind. The XYZ Racing Hollow Rear Brake Kit replaces them with a lighter, more thermally stable setup sized for a 425bhp saloon that carries real speed between braking zones.
This is the rear-axle kit for the 2014-2018 F80 M3 sedan, a pair of left and right rear calipers and matched discs that work alongside a front setup to keep bias predictable under hard deceleration. Two-piece floating discs strip rotating mass from the rear, where the F80 wants it least, and three pad compounds let you match the back of the car to how you actually drive it.
What this brake kit does for your 2014-2018 Bmw 3 Series F 80 M3 Sedan (OE185)
On the road, the kit firms up rear pedal feel and holds its bite as the discs come up to temperature. Worked hard, the two-piece rotors run cooler and resist the fade that leaves a stock M3 feeling long and vague by the third lap. The Street compound keeps things civil and low-dust for daily miles, the Sport compound adds bite for fast-road work with the odd track day, and the Racing compound is there for circuit days when the rear axle is doing as much thermal work as the front. Lighter discs also trim unsprung mass at the rear, sharpening how the F80 settles over kerbs and mid-corner bumps. The included painted caliper finishes run Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone available.
About the Hollow Rear brake kit
The disc itself is the centrepiece: material is machined out of the rotor to cut weight without surrendering swept area, so the kit lowers both rotating and unsprung mass while keeping the heat capacity a powerful rear-drive sedan needs. The rear brake kit is a pair of left and right rear calipers offered with three pad compounds, Street, Sport and Racing, so the same hardware suits a commuter, a weekend B-road car or a track regular. The caliper body is hollow as standard, with a Hollow Racing upgrade available for serious track use, no dust cover, rated to 1000C and backed by a two-year warranty. Caliper bodies come in the included painted finishes, with a Custom Color for owners matching a wider build and premium polished-forged and candy finishes also available. Discs are drilled or slotted at the same price, with titanium or two-tone anodized centre bells selectable at checkout. Everything is engineered around the M3’s rear axle so the upgrade reads as a considered spec change rather than a bolt-on, balancing stopping power, fade resistance and weight in equal measure.
Fitment for the Bmw 3 Series F 80 M3 Sedan (OE185) (2014-2018)
This kit is cut for the F80 M3 sedan (OE185) built between 2014 and 2018. It addresses the rear axle only and is dimensioned around the car’s original disc package, so it sits behind the factory wheel without additional spacing. Confirm your build year falls inside the 2014-2018 span before ordering.
What buyers also search for
- BMW F80 M3 rear brake upgrade for road and track use
- F80 M3 two-piece floating disc kit that resists fade over repeat braking
- 2014-2018 M3 sedan rear brake kit with Street, Sport and Racing pad options
- BMW 3 Series F80 M3 caliper colour choices including red, gold and custom
- M3 rear big brake kit that keeps factory wheel fitment
Choose your pad compound and caliper colour from the options above 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
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More XYZ products for the Bmw 3 SERIES F 80 M3 SEDAN (OE185) appear here as the rest of the range publishes.