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Big Brake Kit

XYZ Racing Hollow Front Brake Kit — Ford SIERRA COSWORTH (4WD) (1986-1992)

SKU: XYZ-BRK-BKF-FO-06-A-FRONT

  • IncludesFront axle pair (2 discs + 2 calipers)
  • PositionFront
  • Disc Ø330–444 mm
  • Caliper pots6 / 8 / 12-pot
  • Lead time10–15 working days

Fits Ford SIERRA COSWORTH (4WD) (1986-1992)

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£2,000.00Inc. VAT

Lead time: 10–15 working days from payment


£2,000.00

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 — Ford SIERRA COSWORTH (4WD) (1986-1992) — 330 mm
330 mm

The Sierra Cosworth 4WD wears considerably more mass at its nose than the two-wheel-drive cars. The viscous-coupled Ferguson all-wheel-drive hardware sits ahead of the front axle centreline and shifts weight distribution firmly forward. On the road that is largely invisible, but at track pace or on repeated fast-road runs it means the front braking system is working beyond its original design margin. The XYZ Racing front big brake kit addresses that directly.

For cars in active use rather than static display, the factory stoppers from 1986-1992 are now operating at the edge of their design life under any kind of enthusiastic load. An uprated front kit restores braking margin and opens up pad compound options the original calipers and discs were never rated to manage.

What this brake kit does for your 1986-1992 Ford SIERRA COSWORTH (4WD)

The front axle carries the majority of the deceleration load on any car, and the 4WD Cosworth’s nose weight makes that dynamic sharper than on the rear-wheel-drive cars. Fitting the XYZ Racing kit increases thermal capacity over the standard setup, which translates into more consistent pedal feel through repeated heavy stops. The fade that turns original Cosworth stoppers into the session’s limiting factor is significantly reduced. Three pad compounds let the specification track how the car is actually used. Street is the quiet, low-dust road default; Sport adds bite and heat range for fast B-road work and the occasional track day; Racing is the dedicated circuit compound for the tracks where the Cosworth’s Group A pedigree belongs. Discs are offered drilled or slotted at the same price.

About the front big brake kit

The hollow-vane disc at the centre of this kit prioritises heat dissipation by increasing internal airflow through the rotor under sustained braking, resisting the surface temperatures that cause pad glazing and the patchy wear that follows. Over the solid or lightly vented discs fitted to period Sierra Cosworth brake systems, the geometry gives more headroom before fade sets in. The caliper is a hollow-body design as standard; for competition or high-intensity circuit use, the optional Hollow Racing caliper is rated to 1000C, runs without a dust cover, and carries a two-year warranty.

Included caliper finishes are Red, Yellow, Gold, Black, and Anodized Black at no extra cost. A Custom Color in any Pantone is available for owners who want an exact match to a period race livery or a specific build theme, for an added charge. Premium polished-forged finishes in Titanium, Polished Gold, and Polished Silver and a candy range in Teal, Blue, Red, and Orange sit above the painted set. Centre bell upgrades are offered in five anodized two-tone colours or titanium, selectable at checkout.

Fitment for the Ford SIERRA COSWORTH (4WD) (1986-1992)

This front brake kit is specified for the Ford Sierra Cosworth in 4WD configuration across the production span from 1986 to 1992 and ships as a matched pair of front calipers and discs. The fitment covers the 4WD variant specifically and does not cross-apply to the two-wheel-drive Sierra Cosworth hatchback or the rear-wheel-drive Sapphire Cosworth. Confirm your car carries the 4WD drivetrain before selecting, particularly if you are working from a salvage-title or previously modified example where the drivetrain configuration may have changed.

What buyers also search for

  • Ford Sierra Cosworth 4WD front brake upgrade for track day and fast road use
  • Sierra RS Cosworth 4×4 front brake kit with Racing pad compound option
  • Ford Sierra Cosworth 4WD front caliper upgrade with choice of colour finish
  • Uprated front discs for Ford Sierra Cosworth 4WD to resist fade under repeated hard stops
  • Sierra Cosworth 4×4 front big brake kit compatible with Street, Sport, and Racing compounds

Select your pad compound, disc style, and caliper colour when you order to build this kit for your Sierra Cosworth.

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.

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

Other products that fit this vehicle

Front & rear brake kits, coilovers and more for this car

  • More XYZ products for the Ford SIERRA COSWORTH (4WD) appear here as the rest of the range publishes.