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Heavy-Duty Front Brake Upgrade Built for the 2020-2021 Chevrolet Silverado 3500 HD
The Power Stop KC8670A-36 is a complete front Z36 Truck and Tow brake kit engineered specifically for the 2020-2021 Chevrolet Silverado 3500 HD. This kit replaces the entire front brake assembly in one bolt-on package, combining Z36 Carbon-Fiber Ceramic brake pads, drilled and slotted zinc-plated G3000 rotors, and powder-coated remanufactured calipers. PSBKC8670A-36 is the correct SKU for this kit. The Z36 compound is specifically formulated for trucks and vehicles that tow, haul, and work hard every day, delivering fade-resistant stopping power under the thermal stress that standard brake components were not built to handle on a 3500 HD chassis. Unlike pad-and-rotor kits, the KC8670A-36 includes powder-coated calipers that resist rust and corrosion while improving the visual appearance behind your wheels. Everything needed for a complete front brake service arrives in one box, including hardware and shims.
Key Features
- Z36 Carbon-Fiber Ceramic brake pads formulated for towing, hauling, and severe-duty use on the Silverado 3500 HD
- Drilled and slotted zinc-plated G3000 cast iron rotors for maximum heat dissipation and fade resistance
- Powder-coated remanufactured front calipers with corrosion-resistant finish
- Stainless steel hardware kit and stainless steel shims included
- Direct bolt-on installation, no modifications required for 2020-2021 Silverado 3500 HD
- 3-year / 36,000-mile limited warranty from Power Stop
- MPN: KC8670A-36 / SKU: PSBKC8670A-36
- Front axle coverage only
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2020-2021 | Chevrolet | Silverado 3500 HD | High Country |
| 2020-2021 | Chevrolet | Silverado 3500 HD | LT |
| 2020-2021 | Chevrolet | Silverado 3500 HD | LTZ |
| 2020-2021 | Chevrolet | Silverado 3500 HD | WT |
Specifications
| Detail | Value |
|---|---|
| Part Number | KC8670A-36 |
| SKU | PSBKC8670A-36 |
| Brand | Power Stop |
| Pad Compound | Z36 Carbon-Fiber Ceramic |
| Rotor Material | G3000 Cast Iron, Zinc-Plated |
| Rotor Style | Drilled and Slotted |
| Caliper Finish | Powder-Coated |
| Position | Front Axle |
| Fitment | 2020-2021 Chevrolet Silverado 3500 HD |
| Warranty | 3-Year / 36,000-Mile Limited |
| UPC | Contact vendor for UPC |
What's Included
- 2x Z36 Carbon-Fiber Ceramic front brake pad sets (inner and outer)
- 2x Drilled and slotted zinc-plated G3000 front rotors
- 2x Powder-coated remanufactured front brake calipers
- Stainless steel hardware kit
- Stainless steel shims
- Pin bushing kit
About Power Stop
Power Stop is a Chicago-based brake manufacturer specializing in performance and heavy-duty brake upgrade kits. Founded in 1997, Power Stop produces brake pads, rotors, caliper kits, and complete brake packages for passenger vehicles, trucks, SUVs, and performance cars. The Z36 Truck and Tow line is engineered specifically for HD trucks and SUVs used for towing, hauling, off-road, and severe-duty driving. Power Stop kits are designed for bolt-on installation and back their products with a 3-year / 36,000-mile limited warranty. The KC8670A-36 is part of their Silverado HD lineup.
Frequently Asked Questions
What is included in the Power Stop KC8670A-36 kit for the 2020-2021 Silverado 3500 HD?The PSBKC8670A-36 kit includes Z36 Carbon-Fiber Ceramic front brake pads, drilled and slotted zinc-plated G3000 rotors, powder-coated remanufactured front calipers, stainless steel hardware, stainless steel shims, and a pin bushing kit for a complete front brake replacement on the 2020-2021 Silverado 3500 HD.
Does the KC8670A-36 fit all trims of the 2020-2021 Chevrolet Silverado 3500 HD?The KC8670A-36 fits the WT, LT, LTZ, and High Country trims of the 2020-2021 Chevrolet Silverado 3500 HD. Confirm your specific trim and axle configuration before ordering. This kit covers the front axle only.
Is this a front-only kit or does it cover both axles?The Power Stop PSBKC8670A-36 is a front axle kit only. It does not include rear brake components. If you are doing a full brake service on your 3500 HD, you will need a separate rear kit.
Why choose Z36 pads over stock pads for the Silverado 3500 HD?Stock brake pads on a 3500 HD are engineered for everyday driving loads. The Z36 Carbon-Fiber Ceramic compound is formulated for the elevated thermal stress of towing, hauling, and frequent braking under load. The carbon fiber reinforcement improves bite force and fade resistance in conditions where standard pads overheat and lose stopping power.
Do the drilled and slotted rotors in the KC8670A-36 require any break-in procedure?Yes. Power Stop recommends a bedding procedure after installation, which involves a series of moderate stops to transfer an even layer of brake pad material onto the rotor surface. Following the bedding process improves pad-to-rotor contact and maximizes the performance of the Z36 compound on the KC8670A-36 rotors.
What is the warranty on the Power Stop KC8670A-36?Power Stop backs the KC8670A-36 with a 3-year / 36,000-mile limited warranty against defects in materials and workmanship. Warranty claims are handled directly through Power Stop customer support.
Are the powder-coated calipers in this kit remanufactured or new?The calipers included in PSBKC8670A-36 are remanufactured units. Power Stop rebuilds these calipers to OEM specifications and applies a powder-coat finish for corrosion resistance and appearance. They are fully pressure-tested before inclusion in the kit.
Can I use the PSBKC8670A-36 on a Silverado 3500 HD used for heavy towing?Yes. The Z36 Truck and Tow compound is specifically designed for towing and hauling applications. It provides improved stopping power under load and is more resistant to brake fade than stock pads, making it a direct upgrade for a 3500 HD regularly used to tow trailers, RVs, or equipment.
Do I need to replace my brake fluid when installing the KC8670A-36?Installing the KC8670A-36 involves compressing the caliper pistons, which pushes brake fluid back into the reservoir. Power Stop recommends inspecting brake fluid condition at the time of installation and replacing it if it is discolored or has exceeded its service interval. Fresh brake fluid helps maintain proper pedal feel after the new calipers are installed.
Installation Notes
- Safely lift and support the 2020-2021 Silverado 3500 HD on jack stands at the front axle. Remove the wheels.
- Disconnect the brake hose from the old caliper. Cap the hose to prevent fluid loss and contamination.
- Remove the old caliper bracket bolts and slide the caliper assembly free from the rotor.
- Remove the old rotor from the hub. Clean the hub surface and mounting flange of rust and debris before installing the new rotor.
- Mount the new drilled and slotted rotor from the KC8670A-36 kit onto the hub. Apply rotor retaining hardware if applicable.
- Install the new caliper bracket and torque bracket bolts to OEM specification for the Silverado 3500 HD front axle.
- Install the new powder-coated caliper from the kit onto the bracket. Reconnect the brake hose and torque the banjo bolt to specification.
- Install the Z36 Carbon-Fiber Ceramic pads with the included hardware and shims. Ensure all hardware clips are fully seated.
- Bleed the front brake circuit to purge air from the new calipers. Verify firm pedal feel before reinstalling wheels.
- Reinstall the wheels, torque lug nuts to specification, and lower the vehicle. Perform the Power Stop bedding procedure on a safe surface before returning the vehicle to service.
WARNING: This product can expose you to chemicals including Antimony oxide (Antimony trioxide), Carbon (Black), and Nickel (Metallic), which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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