XYZ Racing Hollow Rear Brake Kit — Mercedes Benz G63 AMG 4.0 V8 W463 (2019-2026)

At more than two and a half tonnes, the W463 G63 AMG asks more of its rear axle under braking than almost anything else wearing a three-pointed star. The XYZ Racing Rear Big Brake Kit for the Mercedes Benz G63 AMG 4.0 V8 W463 (2019-2026) exists to manage that mass on long descents, back-to-back heavy stops and towing duty, exactly where the standard rear setup heat-soaks first. It is a pair of rear calipers and rear discs, sized for the back axle of this chassis.

This is a rear-axle upgrade for owners who actually work the G63: green-laning, motorway hauling, or simply bringing the M177 4.0 V8 and all its weight down to a junction without the pedal going long. The two-piece floating disc design sheds heat and rotating mass at the back, where the rigid live axle already carries plenty of unsprung weight to begin with.

What this brake kit does for your 2019-2026 Mercedes Benz G63 AMG

Fit this kit and the first thing you feel is a firmer, more consistent pedal once the rear brakes are loaded. The hollow-vane disc pulls heat out of the casting faster, so the rear axle resists the fade that creeps in on long Alpine descents or repeated stops from speed. Three pad compounds let you match the rear bias to how you genuinely drive: Street for quiet, low-dust daily running, Sport for more bite and a wider heat range on fast roads and the occasional track day, and Racing for sustained circuit work. Because the G63 throws so much of its braking effort rearward when laden or towing, a rear kit that stays cool keeps overall stopping distances predictable rather than stretching as the discs soak up heat. Front-and-rear balance is what stops a heavy 4×4 squatting and shuffling under a hard application, and a stronger back axle plays its part in that.

About the rear big brake kit

This is a bolt-on big brake package for the rear axle, supplied as a matched pair of calipers, two-piece floating discs and pads. The disc rings can be drilled or slotted at the same price, and you set the pad compound when you order: Street, Sport or Racing. The caliper is hollow-bodied to keep weight down, and a Hollow Racing upgrade is offered for serious track use, dropping the dust cover, rated to 1000C and carrying a two-year warranty. Painted caliper colours come at no extra cost in Red, Yellow, Gold, Black or Anodized Black, with a Custom Color option in any Pantone for an extra GBP 150. Premium polished-forged finishes (Titanium, Polished Gold, Polished Silver) and candy finishes (Candy Teal, Candy Blue, Candy Red, Candy Orange) are also available. Centre bells can be specified as two-tone in five anodized colours or in titanium. The package is engineered around the W463’s rear geometry, addressing heat capacity and pedal feel without altering how the car sits.

Fitment for the Mercedes Benz G63 AMG 4.0 V8 W463 (2019-2026)

This kit is mapped to the W463 generation Mercedes Benz G63 AMG with the 4.0 V8, covering model years 2019 to 2026, and fits the rear axle specifically. Confirm your chassis code and rear wheel clearance against the listed fitment before ordering, as caliper size sets the minimum wheel diameter.

What buyers also search for

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Pick your pad compound and caliper colour for the W463 G63 AMG rear axle and build your kit using the configurator above.