Big Brake Kit
XYZ Racing Hollow Rear Brake Kit — Mercedes Benz C CLASS W203 C 320 (2000-2007)
SKU: XYZ-BRK-BKR-ME-021-REAR
- IncludesRear axle pair (2 discs + 2 calipers)
- PositionRear
- Disc Ø330–421 mm
- Caliper pots6 / 8-pot
- Lead time10–15 working days
Fits Mercedes Benz C CLASS W203 C 320 (2000-2007)
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Caliper render for this kit:
The W203 carries more of its mass over a comfort-tuned multilink rear axle than its sober saloon silhouette lets on, and in C 320 form the torque-rich V6 means you reach every braking zone with genuine momentum to wash off. That is exactly where a stronger rear setup earns its keep: stability under trail-braking, and a pedal that does not go long after a run of hard stops down a B-road.
The XYZ Racing Hollow Rear Brake Kit for the Mercedes Benz C Class W203 C 320 is built to restore that composure on a chassis tuned for refinement first and bite second. Supplied as a matched pair of rear calipers and discs, it is a rear-axle upgrade aimed at fast-road drivers and occasional track-day users keeping these cheap, rear-driven Mercedes saloons sharp and alive in 2026.
What this brake kit does for your 2000-2007 Mercedes Benz C Class W203 C 320
On the road you will feel a firmer, more progressive pedal and a rear axle that settles rather than skips when you brake into a turn. The two-piece floating discs use hollow vanes to shed rotating mass at the rear corners, which takes load off the standard setup and helps the car rotate more honestly on the way into a bend. With three pad compounds available – Street for quiet, low-dust daily use, Sport for spirited road and occasional track work, and Racing for repeated heavy stops on circuit – you can match the rear bias to how you actually use the C 320, whether that is motorway miles or hot laps. The result is more consistent retardation and a brake balance that no longer leans entirely on the front axle.
About the Hollow Rear Brake Kit
The Hollow Rear Brake Kit pairs a lightweight two-piece floating rotor with a fixed caliper to give the W203’s rear axle a meaningful step up over the factory single-piston arrangement. The hollow-vane construction cuts unsprung and rotating weight while opening up cooling paths, so the discs shrug off heat soak better across successive stops. The caliper is hollow-body as standard, with a Hollow Racing upgrade rated to 1000C and backed by a two-year warranty for hard track use. Pad choice is the tuning lever: Street for everyday driving, Sport for spirited road use, and Racing for track work where bite at temperature matters most. Included caliper finishes are Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone for £150, plus premium polished-forged Titanium, Polished Gold and Polished Silver and candy Teal, Blue, Red and Orange. Discs come drilled or slotted at the same price, with two-tone centre bells in five anodized colours or titanium selectable at checkout. It is a focused rear kit designed to complement a front big brake setup and sharpen the car’s overall braking balance.
Fitment for the Mercedes Benz C Class W203 C 320 (2000-2007)
This kit is specified for the W203-generation C 320, covering the 2000 to 2007 production span. It is a rear-axle fitment, sized to that chassis and trim. Confirm your exact build year before ordering.
What buyers also search for
- Mercedes Benz C Class W203 rear big brake kit for fast-road and track use
- C 320 rear brake upgrade with selectable Street, Sport or Racing pads
- W203 hollow-vane disc rear kit to rebalance braking off the front axle
- Mercedes C 320 caliper colour options – red, yellow, gold, black or anodized black
- W203 rear brake kit that resists fade on repeated heavy stops
Choose your pad compound, caliper finish and disc style, and the configurator above will build your W203 C 320 rear kit.
What’s in the kit
Rear axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 330–421 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 6 / 8-pot
- 2×High-stiffness mounting brackets
- 2×Braided stainless steel brake lines
- 4×High-performance brake pads (1 set)
- 1×Fitting hardware & tools pack
Parking brake: Retains your original (OE) handbrake.
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 330–356mm (rear). 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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