Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Bmw X3 F25 (2011-2017)
SKU: XYZ-BRK-BKF-BM-075-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø356–444 mm
- Caliper pots6 / 8 / 12-pot
- Lead time10–15 working days
Fits Bmw X3 F25 (2011-2017)
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Caliper render for this kit:
The F25 X3 arrives from Munich weighing in excess of 1,700 kg in standard trim, and that mass, combined with the xDrive35i’s N55 turbo making 306 bhp, means the front brakes are doing serious work from the moment you leave the factory specification behind. The XYZ Racing Hollow front brake kit replaces the stock setup with hardware designed to handle sustained deceleration without the fade and extended pedal travel the original components develop under repeated hard use. It is a single-axle kit, a matched pair of front calipers and two-piece floating front discs for the left and right corners.
Standard-trim F25 braking is adequate for commuting. It was not designed with back-road work or back-to-back motorway exits in mind. An upgraded front kit changes the confidence threshold at the end of a fast straight, and it changes it permanently rather than as a function of how warm or cold the original discs happen to be.
What this brake kit does for your 2011-2017 Bmw X3 F25
The front axle of an xDrive F25 carries a disproportionate braking load, because the heavier the nose, the harder the front hardware works under trail-braking and progressive deceleration, and brake balance only loads it further the harder you stop. The hollow-vane disc routes air through the rotor body to shed heat between events, and the two-piece floating construction lets it expand without distorting, while dropping rotating and unsprung mass at the front sharpens steering response. Three compounds configure the kit for actual use rather than a hypothetical average: Street suits owners looking for sharper, low-dust response without aggressive cold-bite, Sport steps up friction and heat tolerance for spirited road driving with the odd lap, and Racing is built for circuit sessions and mountain-road use where rotors are repeatedly cycled through high temperatures. Included painted caliper colours are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone available, so the front axle can reflect whatever direction the wider build is heading.
About the Hollow Front Brake Kit
XYZ Racing’s Hollow front brake kit is a direct front-axle upgrade targeting the gap between factory specification and what drivers who actually use their cars need, built around a hollow-vane disc and two-piece floating construction. The caliper body is hollow-cast as standard for stiffness without the weight, and a Hollow Racing caliper, with no dust cover, a 1000C rating and a two-year warranty, is available for serious track use. Three pad compounds, Street, Sport and Racing, address different use profiles without requiring a separate purchase for each mode of driving: owners who want improved daily stopping select Street, those looking for spirited-road gains choose Sport, and circuit users take Racing. Included painted caliper finishes are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone for £150 and premium polished-forged Titanium, Polished Gold and Polished Silver plus candy Teal, Blue, Red and Orange. Discs come drilled or slotted at the same price, and centre bells can be two-tone anodized in five colours or titanium.
Fitment for the Bmw X3 F25 (2011-2017)
This front brake kit is listed for the BMW X3 F25 chassis, covering the full 2011 to 2017 production run. The F25 spanned a broad range of engine configurations, from 2.0-litre diesel variants through to the N55-engined 35i petrol, and this fitment applies across the generation. Confirm your existing front brake specification before ordering, as caliper carrier dimensions can vary between trim levels.
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Set your pad compound, disc style and caliper colour from the options above, then confirm fitment against your build year and existing front brake specification.
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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