XYZ Racing Hollow Rear Brake Kit — Mercedes Benz C CLASS W205 C 63 AMG (2015-2021)

The W205 C 63 AMG asks a lot of its rear axle. A 4.0-litre twin-turbo V8 sends north of 470 bhp rearward through a car that already carries most of its mass over the nose, so under hard braking the back end has to stay planted while the standard rear discs soak up heat they were never sized to shed on repeat. That is the gap the XYZ Racing Hollow Rear Brake Kit for the Mercedes Benz C CLASS W205 C 63 AMG (2015-2021) is built to close.

This is a rear-axle upgrade aimed at owners who use the C 63 the way it begs to be driven: fast-road runs and track days where the factory rear brakes start to go soft. Two-piece floating discs and a choice of three pad compounds let you match the rear bias to how hard you actually drive, without turning a 500 bhp saloon into a cold-brake liability on the school run.

What this rear brake kit does for your 2015-2021 Mercedes Benz C CLASS W205 C 63 AMG

On a heavy rear-drive saloon, the rear brakes do more than trim speed; they manage how the car settles into a corner. Upgrade the rear discs and pads and you feel it as a more stable, predictable platform under trail-braking, where the W205 can otherwise feel like it is leaning on the fronts alone. The two-piece floating disc design sheds rotating and unsprung mass and feeds air through the vanes, so temperatures build more slowly across a session and pedal travel stays put rather than going long. The Racing compound resists fade when you string corners together, the Street compound keeps things quiet and low-dust for daily use, and the Sport compound sits in between for fast road with the odd track day. The kit ships as a matched pair of rear calipers and discs, so the back axle is upgraded as a unit.

About the Hollow rear brake kit

The caliper is a hollow-body forged unit as standard, machined to keep stiffness high while stripping weight, and it clamps a two-piece floating disc that lets the friction ring move on the bell as it expands under heat. On the rear axle of the C 63 that matters, because a rear disc that overheats pushes the braking balance forward exactly when you want the car stable. You choose the pad to suit the job: Street for quiet, low-dust road use, Sport for harder road and occasional track, and Racing for sustained circuit temperatures. Painted caliper finishes come in Red, Yellow, Gold, Black and Anodized Black at no extra cost, with a Custom Color in any Pantone shade available for a small upcharge, plus premium polished-forged and candy finishes if you want the hardware to be the talking point. For serious track use there is an optional Hollow Racing caliper rated to 1000C with a two-year warranty. It is a rear-specific kit, designed to be run as a matched pair and, ideally, alongside a front upgrade so the bias stays sensible.

Fitment for the Mercedes Benz C CLASS W205 C 63 AMG (2015-2021)

This kit is mapped to the W205-generation C 63 and C 63 S AMG built from 2015 to 2021, the M177 twin-turbo V8 cars, not the lesser C-Class W205 variants. It fits the rear axle specifically. Confirm your build year against the range above before you order, since AMG running gear changed across the W205 life cycle.

What buyers also search for

• Mercedes C 63 AMG W205 rear brake upgrade for fast road and track-day use
• W205 C 63 two-piece floating disc rear brake kit with Street, Sport or Racing pads
• C 63 AMG rear big brake kit caliper colours including red, yellow, gold and custom Pantone
• 2015-2021 Mercedes C-Class C 63 rear brakes that resist fade over repeat sessions
• Mercedes Benz C 63 AMG rear brake kit matched to a front big brake upgrade

Choose your pad compound, disc style and caliper colour for the W205 C 63 AMG using the options above to build your rear kit.