
XYZ Racing Hollow Front Brake Kit — Bmw 3 SERIES E 90 323 (2006-2011)
SKU: XYZ-BRK-BKF-BM-053-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø330–444 mm
- Caliper pots6 / 8 / 12-pot
- Lead time10–15 working days
Fits Bmw 3 SERIES E 90 323 (2006-2011)
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Caliper render for this kit:

At the base of the E90 six-cylinder range, the 323’s front brake package carries the distinction of being the smallest-specification setup BMW fitted to the saloon, adequate for the 170bhp N52’s road commitments but limited the moment you start asking it to deal with sustained speed on a circuit or a mountain pass. The XYZ Racing front big brake kit replaces that limiting factor with a larger swept area and an uprated caliper at the front axle where the E90 does most of its stopping work.
This is a single front-axle kit: a matched pair of calipers and two-piece floating discs. Three pad compounds, chosen when you order, so the specification can be matched to how the 323 is actually driven rather than requiring an immediate compound swap post-installation. Caliper colour is included across Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone for £150, making the visual transformation part of the package.
What this brake kit does for your 2006-2011 Bmw 3 Series E 90 323
Bigger front rotors mean more thermal mass absorbing heat under hard stops, the mechanism behind fade on the E90 323’s factory setup when the braking becomes repetitive rather than occasional. At the front axle, where the 323’s weight shifts forward under deceleration and generates the majority of stopping force, the improvement in clamped area translates directly into better pedal feel and reduced travel. The hollow-vane disc draws cooling air through the rotor body, and the two-piece floating ring grows under heat without coning while cutting rotating and unsprung mass. Braided lines firm the pedal further. The three compound grades, Street for daily use, Sport for fast-road regularity, Racing for circuit work, let the system operate at its rated capacity across conditions. The caliper finish choice means the upgrade reads clearly through the 323’s standard alloy fitment.
About the Hollow Front Brake Kit
The XYZ Racing kit is a front-axle assembly built around an uprated rotor-and-caliper pairing, designed to replace the smaller-specification brake hardware that comes standard on entry-level 3 Series variants such as the 323. The caliper runs a hollow body as standard, keeping reciprocating weight low; for circuit use a Hollow Racing upgrade drops the dust cover, is rated to 1000C and carries a two-year warranty. It pairs a two-piece floating disc to increase swept area and thermal capacity over the standard E90 fitment with a caliper in your chosen finish, included across the painted colours with premium polished-forged and candy options and two-tone or titanium centre bells selectable at checkout. Three pad compounds cover the performance spectrum: Street for everyday road use, Sport for more aggressive initial bite without committing to a full motorsport compound, and Racing for those running the car on circuit. Discs come drilled or slotted at the same price. The design targets the gap between the factory 323 brake specification and what drivers actually need once the car is pushed.
Fitment for the Bmw 3 Series E 90 323 (2006-2011)
This front brake kit is confirmed for the BMW 3 Series E90 platform in 323 specification, covering the 2006 to 2011 production run. The E90 designation refers to the four-door saloon body. Owners of the E91 Touring, E92 Coupe or E93 Convertible should verify fitment separately against their body code. Confirm your build date sits within the 2006-2011 window before ordering.
What buyers also search for
- BMW E90 323 front brake upgrade for track days and sustained fast-road driving
- E90 323 big brake kit with Sport and Racing pad compound options
- BMW 3 Series E90 brake fade solution for repeated hard stops
- E90 323 front caliper upgrade with colour-matched finish options
- BMW E90 323 front brake kit sized for standard 3 Series wheel clearance
A bigger front brake package with three compound grades and a full caliper colour range. Pick your spec from the options above.
What’s in the kit
Front axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 330–444 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.

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 E 90 323 appear here as the rest of the range publishes.