Brembo KT00B86 OE Rear Brake Kit 2014–2021 Mercedes-Benz C63 AMG S / S63 AMG / S65 AMG / AMG GT 63

The Brembo KT00B86 is a rear OE replacement brake kit engineered for 2014–2021 Mercedes-Benz AMG models including the C63 AMG S, S63 AMG, S65 AMG, and AMG GT 63/GT 63 S. Each KT00B86 kit includes two 360mm drilled and grooved high-carbon cast iron pillar-vented rear rotors with rust-resistant coating, plus a full set of ceramic brake pads with hardware. This is the same Brembo braking technology supplied as original equipment on Mercedes-AMG vehicles delivered as a matched axle set for consistent, balanced rear braking performance right out of the box. Important: the KT00B86 is not compatible with vehicles equipped with the optional ceramic composite brake system (CCB).

What's Included in the KT00B86 Kit

Every Brembo KT00B86 ships as a complete rear axle brake service kit. There is no need to source rotors and pads separately, verify compatibility between components, or wonder if the friction material is properly matched to the rotor surface. Brembo engineers the pad compound and rotor together as a system.

• 2x Rear Disc Brake Rotors — 360mm drilled, grooved, pillar-vented, high-carbon cast iron with rust-resistant coating and fixing screws included
• 1x Rear Disc Brake Pad Set — Ceramic compound with pad wear sensor provision and anti-squeal hardware
• All installation hardware — Everything needed for a complete rear axle service

360mm High-Carbon Drilled & Grooved Rotors

The KT00B86 rotors are cast from high-carbon cast iron the same premium material specification used on Brembo's motorsport-derived road components. High-carbon iron runs cooler, resists thermal cracking, and delivers more consistent and progressive pedal feel than standard gray iron, especially under the repeated hard stops these AMG platforms are designed to handle. At 360mm diameter, these match the factory rear rotor specification for all covered vehicles exactly.

The drilled and grooved surface finish serves dual purposes: the drilling reduces unsprung rotational mass and provides outgassing channels during aggressive brake application, while the grooves continuously clean and deglaze the pad surface for consistent bite throughout the pad's life. A rust-resistant coating protects the non-swept hat and vane area from the surface oxidation that makes stock replacement rotors look neglected within weeks of installation. Fixing screws are included to secure the rotor hat to the hub during installation.

Ceramic Pads — OE-Level Comfort With Improved Durability

The ceramic pad compound included in the KT00B86 is formulated to Brembo's OE specification for these AMG applications matching the brake system that Mercedes-Benz engineers specified. Ceramic compounds run cleaner than semi-metallic pads (minimal brake dust on wheels), operate more quietly, and are gentler on rotor surfaces over the long term. The pads include pre-attached hardware and are prepared for the factory pad wear sensor, so your dashboard warning system continues to function correctly after installation.

Fitment — 2014–2021 Mercedes-Benz AMG Models

The Brembo KT00B86 fits the rear axle of the following Mercedes-AMG models. This kit does not fit vehicles equipped with the optional ceramic composite brake upgrade (CCB/PCCB). Verify your vehicle's brake specification before ordering check the brake caliper or consult your build sheet. CCB-equipped vehicles use a different rotor material and pad compound.

Full Specifications

OE Fitment — Engineered to Mercedes-AMG Factory Specification

Brembo is not an aftermarket supplier trying to approximate the factory brake system Brembo is the factory brake supplier. Mercedes-AMG sources Brembo calipers and braking components directly for their highest-performance road models. The KT00B86 delivers those same engineering standards in a replacement kit format: the rotor metallurgy, the pad compound formulation, and the hardware are all spec'd to Mercedes-AMG's original engineering requirements. This is not a generic brake kit that happens to fit it is the replacement for the brakes the car was built with.

Why Replace Rotors and Pads Together

Brake pads wear-in to the micro-surface profile of the rotor they are run on. Installing new pads on worn rotors means the new pads never achieve full surface contact until they wear-in to the new rotor profile a process that can take hundreds of miles and results in reduced braking performance and increased noise in the interim. Replacing both components simultaneously with the KT00B86 eliminates that break-in penalty and ensures the full Brembo OE braking performance is available immediately after installation. This is especially important on high-output AMG platforms where braking performance margins are tighter.

Installation Notes

The KT00B86 is a direct OE replacement kit for the rear axle no modifications required. All hardware is included.

• Rear axle installation only this kit does not cover the front brakes
• Not compatible with ceramic composite brake (CCB) equipped vehicles verify your brake caliper type before installation
• Rotor fixing screws are included use them to secure the hat during pad bedding
• Follow the Brembo bedding procedure after installation: 6–8 moderate stops from 40 mph, then 6–8 firm stops from 50 mph, allow full cooling between each cycle
• Reattach pad wear sensor connector sensor is reused from the original pads
• Torque wheel bolts to factory specification after installation

About Brembo

Brembo is the world's leading manufacturer of high-performance braking systems, supplying OE brakes to Mercedes-AMG, BMW M, Ferrari, Lamborghini, Porsche, and every Formula 1 team on the grid. Founded in Italy in 1961, Brembo's engineering and manufacturing remains centered in Curno, Bergamo. Every Brembo OE replacement component is built to the same material and dimensional specifications as the parts that left the factory with the vehicle.

Frequently Asked Questions

Is the Brembo KT00B86 a front or rear brake kit?
Rear only. The KT00B86 covers the rear axle exclusively two 360mm rear rotors plus rear ceramic pads with hardware. It does not include front rotors or front pads. If you need a complete four-corner brake service, a separate front kit will be required for your specific model.

Will the KT00B86 fit my C63 AMG S?
The KT00B86 fits the Mercedes-Benz C63 AMG S from 2015 through 2021 on the rear axle. The 2016 base C63 AMG (non-S) is also covered. Verify that your vehicle does not have the optional ceramic composite brake (CCB) upgrade that system uses incompatible rotor material and is not serviceable with this kit.

Does this kit fit AMG GT 63 and GT 63 S models?
Yes. The KT00B86 fits the 2019–2021 AMG GT 63 and AMG GT 63 S on the rear axle, provided the vehicle does not have the ceramic composite brake option.

What is the ceramic composite brake (CCB) exclusion?
Mercedes-AMG offers an optional ceramic composite brake upgrade on many of these models. CCB rotors are made from carbon-ceramic material rather than cast iron and require a different, specialized pad compound. The KT00B86 is designed for cast iron OE brakes only. If your vehicle has CCB, the rotors will typically have a gold or yellow caliper (versus the standard silver or red caliper) do not order this kit for a CCB-equipped vehicle.

Does the KT00B86 include a pad wear sensor?
The pads in the KT00B86 are prepared for the factory pad wear sensor, but the sensor itself is not included in the kit. Reuse your existing factory sensor when installing the new pads. If your current sensor is damaged or has triggered a warning, replace it separately before installation.

What are the OE part numbers this kit replaces?
The KT00B86 replaces Mercedes-Benz rotor part numbers 2314230212 and A2314230212, and pad part numbers 0064206920, 0064209020, and 0084200720.

Do the rotors require any machining or prep before installation?
No. Brembo OE replacement rotors are manufactured to finished dimension and are ready to install directly from the box. Clean the rotor surfaces with brake cleaner before installation to remove any protective coating applied for shipping, then follow the bedding procedure after installation.

Why does the kit have a rust-resistant coating on the rotors?
The rust-resistant coating is applied to the non-swept areas of the rotor the hat, vanes, and outer edge to prevent the surface oxidation that causes new rotors to look rusty within days of installation. The swept (pad contact) area is left uncoated as the pad friction naturally keeps that surface clean during normal use.

Is Brembo an OEM supplier to Mercedes-AMG?
Yes. Brembo supplies braking systems directly to Mercedes-AMG as original equipment on the performance models covered by this kit. The KT00B86 is not a generic aftermarket replacement it is manufactured by the same company that built the brakes on the vehicle originally.