
XYZ Racing Hollow Front Brake Kit — Mazda 323 (1998-2003)
SKU: XYZ-BRK-BKF-MA-B005-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø380–444 mm
- Caliper pots8 / 12-pot
- Lead time10–15 working days
Fits Mazda 323 (1998-2003)
Added to basket ✓
Caliper render for this kit:

The BJ-generation 323 was always lighter and more agile than its price bracket suggested, particularly in 1.6 and 1.8 trim, which is part of why these cars have earned a genuine following in UK club motorsport and track days two decades after production ended. What the BJ’s front-wheel-drive layout does under hard braking is concentrate load rapidly onto the front axle: the nose dives, the front tyres shoulder the stopping effort, and stock discs sized for a family hatchback build heat faster than most owners expect once the car is being driven to its limits. This XYZ Racing front big brake kit for the Mazda 323 (1998-2003) is the direct answer.
You receive a pair of front calipers and a pair of front discs, with pad compound, disc style, and caliper finish all chosen above this copy when you order. The engine-ahead-of-the-axle layout is not unique to the 323, but the BJ’s relative lightness means it is a car drivers tend to push confidently right up to the point where the brakes start to protest. Sorting the front braking removes that ceiling.
What this brake kit does for your 1998-2003 Mazda 323
The hollow-vane disc increases the surface area available for heat rejection, so sustained braking loads, the kind a track session produces rather than a single motorway stop, soak less thermal energy into the pad and caliper. The result is a pedal that stays consistent across repeated hard applications rather than softening as temperatures climb. Two-piece floating discs cut rotating and unsprung mass at the front, and braided lines firm the pedal by removing rubber-hose expansion under pressure.
Three pad compounds extend the kit’s range. Racing requires temperature to reach its working window, which suits circuit sessions where the brakes see repeated heavy use in quick succession. Sport adds bite and a higher heat range for a 323 that also covers fast-road miles. Street is the quiet, low-dust default that works from cold without a bedding procedure.
About the XYZ Racing Hollow Front Brake Kit
The kit takes its design cue from the internal disc geometry: hollow passages through the vane structure increase total surface area, so the disc sheds heat more efficiently under the sustained loads of repeated hard stops. The caliper is a hollow-body forging as standard, low in mass yet stiff enough to clamp without flex, and for dedicated circuit work the optional Hollow Racing caliper deletes the dust cover, is rated to 1000C, and carries a two-year warranty. The three-compound pad selection is central to its flexibility, a single rotor-and-caliper combination that accepts Street pads for the road, Sport for mixed road-and-track use, and Racing for the circuit.
Discs can be drilled or slotted at the same price, with centre bells available two-tone in five anodized colours or titanium. Included caliper colours, at no extra cost, are Red, Yellow, Gold, Black, and Anodized Black. A Custom Color in any Pantone is £150, with premium polished-forged Titanium, Polished Gold, and Polished Silver finishes and a candy range of Candy Teal, Candy Blue, Candy Red, and Candy Orange, relevant for BJ 323s that now appear at shows and autosolo events as often as on track.
Fitment for the Mazda 323 (1998-2003)
This kit covers the BJ-generation Mazda 323 across the full 1998 to 2003 production span. Front brake specification varied by trim across the model range, so confirm your car’s existing disc diameter and caliper configuration using the fitment selector before building your order.
What buyers also search for
- Mazda 323 BJ front brake upgrade for club motorsport and track day use
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- Big brake kit for Mazda 323 BJ 1.6 and 1.8 with coloured caliper finish options
- Mazda 323 front disc and caliper upgrade for autosolo and fast-road driving
Build yours with the compound, disc, and caliper selectors when you order.
What’s in the kit
Front axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 380–444 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 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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