XYZ Racing Hollow Rear Brake Kit — Mercedes Benz S CLASS W222 S63 AMG 4MATIC (2014-2020)

A 2014-2020 Mercedes Benz S CLASS W222 S63 AMG 4MATIC tips the scales beyond two tonnes, and its M157 biturbo V8 sends well over 570 bhp to all four wheels. That combination loads the brakes with serious kinetic energy every time you wash off autobahn speed, and on a car this heavy the rear axle takes a bigger share of the work than most owners assume, particularly under the 4MATIC torque split when you trail-brake into a long sweeper.

The XYZ Racing Hollow Rear Brake Kit is built to take that heat without going soft. It pairs a larger two-piece floating rotor with a stiffer caliper to give the back of the S63 the thermal headroom a standard luxury-spec setup runs out of, so the pedal stays firm after repeated hard stops rather than fading into a long, mushy travel.

What this brake kit does for your 2014-2020 Mercedes Benz S CLASS W222 S63 AMG 4MATIC

The first thing you notice is a firmer, more consistent pedal under sustained load, as the larger rear rotor sheds heat faster, so fade arrives much later on a fast road descent or a series of high-speed motorway stops. The hollow-vane disc design trims rotating and unsprung mass at the rear axle, which helps the rear suspension settle more quickly over mid-corner bumps. With three pad compounds you can match bite and temperature range to how you actually use the car: Street for refined daily braking, Sport for harder fast-road work with more bite, and Racing for track-biased pad material. Hauling a 4MATIC S63 down from speed becomes a more confident, more repeatable event.

About the Hollow Big Brake Kit

XYZ Racing’s hollow rear kit is named for its lightweight two-piece floating rotor, where the internal vane structure is cast hollow to remove material that does no thermal work, cutting rotating mass without sacrificing the disc face that actually does the stopping. The caliper is matched to the larger disc diameter to apply even clamping pressure across a bigger swept area, which is what gives the kit its extra fade resistance over the factory rear brake. The caliper body is hollow as standard, with an optional Hollow Racing upgrade for serious track use, rated to 1000C with no dust cover and a two-year warranty. The pad range spans a Street compound for quiet road manners, a Sport compound that bites harder when warm, and a Racing compound for sustained high-temperature use. Discs are drilled or slotted at the same price, with two-tone anodized or titanium centre bells selectable, and caliper finishes run from no-cost Red, Yellow, Gold, Black and Anodized Black through premium polished-forged Titanium, Polished Gold and Polished Silver, candy Teal, Blue, Red and Orange, or a Custom Pantone for 150 pounds, so you can set the look behind the wheel to taste. It is a rear-axle kit, a pair of rear discs and calipers designed to work with the front brakes on a heavy 4MATIC saloon and keep the car’s braking balance composed under load.

Fitment for the Mercedes Benz S CLASS W222 S63 AMG 4MATIC (2014-2020)

This kit is specified for the W222-generation S CLASS S63 AMG 4MATIC built from 2014 to 2020. It fits the rear axle and is matched to that chassis code and model-year span. Confirm your exact build year and trim against the listing before you order, since the W222 ran through several specification updates across its life.

What buyers also search for

• Mercedes Benz S63 AMG rear brake upgrade for heavy, high-speed touring
• W222 S CLASS big brake kit that resists fade on repeated motorway stops
• S63 4MATIC rear brake kit with Street, Sport and Racing pad options
• Hollow-vane lightweight rear rotor for the W222 S63 to cut rotating mass
• Caliper colour choices for the S CLASS W222 S63 AMG rear brake kit

Pick your pad compound and caliper colour for the W222 S63 AMG 4MATIC from the options above when you order your rear big brake kit.