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Big Brake Kit

XYZ Racing Hollow Front Brake Kit — Smart SMART (FOR FOUR) (2004-2006)

SKU: XYZ-BRK-BKF-SM-001-FRONT

  • IncludesFront axle pair (2 discs + 2 calipers)
  • PositionFront
  • Disc Ø286–444 mm
  • Caliper pots4 / 6 / 8 / 12-pot
  • Lead time10–15 working days

Fits Smart SMART (FOR FOUR) (2004-2006)

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£1,600.00Inc. VAT

Lead time: 10–15 working days from payment


£1,600.00

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 Front Brake Kit — Smart SMART (FOR FOUR) (2004-2006) — 286 mm
286 mm

The W454 Forfour is the car that Mitsubishi and DaimlerChrysler conspired to make genuinely entertaining, a front-engine, front-wheel-drive city machine that, in Brabus trim, could embarrass hot hatches twice its size. Its factory brake specification, though, reflects the A-to-B brief of the base range rather than the ceiling its 177bhp Brabus variant implied.

This XYZ Racing front kit addresses that gap directly. It is a matched pair of front calipers and two-piece floating front discs, with three pad compounds, and it leaves the rear axle untouched, so the kit is configured around how the Forfour is actually used rather than how the factory assumed it would be.

What this brake kit does for your 2004-2006 Smart SMART (FOR FOUR)

On a front-drive platform like the W454, the front axle manages the bulk of braking force on every stop, and the stock hardware was specced to city-car duty rather than sustained spirited driving. This kit improves thermal headroom through the two-piece floating disc, which moves heat out of the friction surface faster than the one-piece factory iron under repeated hard applications, and the reduced rotating mass sharpens turn-in on a light, eager chassis. The three compounds do real work here: Street is the quiet, low-dust default for predominantly urban use, Sport covers fast-road and the occasional track stint with more bite and a wider heat range, and Racing is the dedicated compound for owners who show up to autotest events or hillclimbs where the brakes take sustained load. On a car that weighs under a tonne, the gain in pedal bite and consistency is felt immediately.

About the Hollow Front Brake Kit

The caliper is hollow-bodied as standard, a forged construction that keeps mass low and reduces rotational inertia across the front axle while holding clamping rigidity. For a car as weight-sensitive as the Forfour, that lighter front end lets the suspension track surface changes more accurately. Serious track users can specify the optional Hollow Racing caliper, which deletes the dust cover, is rated to 1000C, and carries a two-year warranty. The two-piece floating disc improves heat dissipation and lowers unsprung weight, while pad choice spans Street, Sport, and Racing, each targeting a distinct duty cycle. Discs are available drilled or slotted at the same price, and the centre bells can be upgraded to a two-tone anodized finish in five colours or to titanium. Caliper finish runs from the included Red, Yellow, Gold, Black, and Anodized Black at no extra cost, through any Pantone as a Custom Color, to premium polished-forged and candy options, all selectable when you order, so the installation sits cleanly behind the wheel rather than looking like an aftermarket bolt-on.

Fitment for the Smart SMART (FOR FOUR) (2004-2006)

This kit is specified for the Smart Forfour W454 platform across the full 2004 to 2006 production run. Fitment is to the front axle. Confirm engine variant before ordering, as hub geometry can vary between the 1.1, 1.3, and 1.5 derivatives on the W454 build.

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Select your pad compound and caliper finish from the options above to build your kit.

What’s in the kit

Front axle kit — supplied as a complete bolt-on assembly.

  • 2×Two-piece floating discs — 286–444 mm: you pick the exact diameter with the "Disc size" option
  • 2×Lightweight aluminium centre bells
  • 2×Forged aluminium calipers — 4 / 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.

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

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