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Big Brake Kit

XYZ Racing Hollow Front Brake Kit — Mercedes Benz S CLASS W221 S 320 CDI (2005-2013)

SKU: XYZ-BRK-BKF-ME-070-FRONT

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

Fits Mercedes Benz S CLASS W221 S 320 CDI (2005-2013)

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 — Mercedes Benz S CLASS W221 S 320 CDI (2005-2013) — 330 mm
330 mm

Carrying close to two tonnes at autobahn pace, the W221 S 320 CDI’s standard front brake specification was engineered around longevity and ride comfort, not the thermal demands of repeated hard stops. The 3.0-litre OM642 diesel delivers its 540Nm early in the rev range, which encourages brisk progress from low speeds; when that mass needs to be arrested in earnest, the OEM setup can run short of consistent bite through the pedal.

The XYZ Racing front big brake kit replaces the front-axle hardware with a matched pair of left and right calipers and two-piece floating discs, configured at order through a choice of pad compound and caliper finish. For a car that is regularly fitted with 20 or 21-inch wheels, the caliper colour choice is as relevant to how the W221 presents as it is to stopping performance.

What this brake kit does for your 2005-2013 Mercedes Benz S CLASS W221 S 320 CDI

Thermal management is the primary gain on a car this heavy. The standard front brakes on the S 320 CDI were sized for the car’s comfort-first remit; the hollow-vane disc sheds heat more efficiently, which translates into a more consistent pedal under repeated heavy braking. The two-piece floating bell lets the friction ring expand without coning, and reduced rotating mass sharpens response. The three pad compounds let owners match friction material to actual use: Street is the quiet, low-dust road default for motorway and urban miles, Sport adds bite and heat range for mixed fast-road driving, and Racing is the track compound for those who take the W221 to track days. Disc faces are offered drilled or slotted at the same price, suiting owners running wide-spoke alloys where the hardware is visible and needs to hold its own aesthetically.

About the Front Brake Kit

This is XYZ Racing’s performance big brake offering, designed to step beyond the original equipment on cars where mass and use patterns put the standard brakes under sustained pressure. The two-piece floating, hollow-vane disc manages heat build-up more effectively than the stock setup under repeated hard stops. The caliper is hollow-bodied as standard, light and stiff to resist flex, with an optional Hollow Racing upgrade for hard track use that deletes the dust cover, is rated to 1000C, and carries a two-year warranty. Braided lines firm the pedal, and centre bells can be upgraded to two-tone anodizing in five colours or titanium at checkout. At order, buyers select pad compound (Street, Sport, or Racing) and caliper colour from the included painted finishes (Red, Yellow, Gold, Black, Anodized Black) at no extra cost, a Custom Color in any Pantone for 150 pounds, or premium polished-forged and candy options. The front-axle application targets the primary braking load on the W221, where the front discs carry the majority of retardation work under hard deceleration. The kit is a specific fitment for the W221 S 320 CDI rather than a universal part.

Fitment for the Mercedes Benz S CLASS W221 S 320 CDI (2005-2013)

This kit is listed for the Mercedes Benz S Class W221 in S 320 CDI specification, covering the full 2005 to 2013 production run and supplied as a left-and-right front pair. The W221 family encompasses multiple engine variants and a long-wheelbase option; if your car differs from the S 320 CDI specification or falls outside the stated date range, confirm the correct fitment reference before ordering.

What buyers also search for

  • Mercedes Benz S Class W221 front brake upgrade for sustained fast-road and motorway use
  • W221 S 320 CDI big brake kit with Street, Sport, and Racing pad compound options
  • Mercedes Benz S Class caliper colour upgrade in Red, Gold, Black, or Custom Color finish
  • S 320 CDI front brake kit to address fade on a near-two-tonne diesel saloon
  • Mercedes Benz W221 front disc and caliper kit covering 2005 to 2013

This W221 S 320 CDI front kit is configured at order. Choose your pad compound and caliper colour 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.

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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