Brake Kit for Heavy-Duty GM Applications

The Dynamite Friction DFC GEOSPEC Coated Rotors with 5000 Advanced Brake Pads - Ceramic and Hardware kit is built for front brake service on select Chevrolet and GMC trucks, vans, and Suburban models. Part number 4512-48077 combines coated rotors, ceramic pads, and brake hardware in one service kit for a complete front brake refresh.

Key Features

• DFC GEOSPEC coated rotors with a silver-gray corrosion-resistant finish
• Dry, ready-to-install rotor surface with no oil-cleaning prep required
• G3000/G11H18 cast iron rotor construction for OE-style durability and stability
• Non-directional rotor finish for more even pad bed-in and smoother braking
• DFC 5000 Advanced ceramic brake pads with post-cured friction material
• Scorched pads to reduce initial break-in time and improve first-stop response
• Premium rubber-steel-rubber shims for improved NVH control
• Brake hardware kit included for a complete front brake service

DFC Brake Pad and Rotor Line Details

The DFC 5000 Advanced pad line is formulated for consistent friction performance across a range of vehicle applications, including family vehicles, performance cars, and light trucks. The pads are post-cured, scorched, and assembled with premium shims to help support quieter operation and stable pedal feel. The GeoSpec rotor line uses a coated finish and precision machining to support cleaner installation and OE-style braking characteristics.

Part number 4512-48077 is a front disc brake kit for vehicles that require 11-inch rear drums or JB6/JD6 brake configurations, depending on application. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Compatible Vehicle Applications

• Fits 1984-1989 Chevrolet P20, front; 11 inch rear drums; JB6 & JD6 brakes
• Fits 1984-1989 GMC P2500, front; rear disc brake rotor designed for 11 inch rear drums
• Fits 1987 Chevrolet R20, front; rear disc brake rotor designed for 11 inch rear drums
• Fits 1987 Chevrolet R20 Suburban, front; 11 inch rear drums; JB6 & JD6 brakes
• Fits 1987 GMC R2500, front; rear disc brake rotor designed for 11 inch rear drums
• Fits 1987 GMC R2500 Suburban, front; 11 inch rear drums; JB6 & JD6 brakes
• Fits 1985-1986 Chevrolet C20, front; rear 11-inch disc brake rotor compatible with JB6 & JD6 braking systems
• Fits 1985-1986 Chevrolet C20 Suburban, front; rear 11-inch disc brake rotor compatible with JB6 & JD6 braking systems
• Fits 1985-1986 GMC C2500, front; rear disc brake rotor designed for 11 inch rear drums
• Fits 1985-1986 GMC C2500 Suburban, front; 11 inch rear drums; JB6 & JD6 brakes
• Fits 1981-1984 Chevrolet C20, front; 11 inch rear drums; JB6 & JD6 brakes; 4-5/8 inch or 6-3/8 inch tall drums
• Fits 1981-1984 Chevrolet C20 Suburban, front; 11 inch rear drums; JB6 & JD6 brakes; under 7,500 lb GVW
• Fits 1981-1984 GMC C2500, front; 11 inch rear drums; 4-5/8 inch or 6-3/8 inch tall drums
• Fits 1981-1984 GMC C2500 Suburban, front; 11 inch rear drums; JB6 & JD6 brakes; under 7,500 lb GVW
• Fits 1981-1983 Chevrolet P20, front; 11 inch rear drums; JB6 & JD6 brakes; 4-5/8 inch or 6-3/8 inch tall drums
• Fits 1981-1983 GMC P2500, front; 11 inch rear drums; 4-5/8 inch or 6-3/8 inch tall drums
• Fits 1975-1980 Chevrolet C20, front; 11 inch rear drum; JB6 brakes
• Fits 1974-1980 Chevrolet C20 Suburban, front; 11 inch rear drums; JB6 brakes; under 7,500 lb GVW
• Fits 1976-1980 Chevrolet G30, front; single rear wheels; 11 inch rear drum brakes; JB6
• Fits 1975-1980 Chevrolet P20, front; 11 inch rear drums; JB6 brakes
• Fits 1979-1980 GMC C2500 Suburban, front; 11 inch rear drums; JB6 brakes; under 7,500 lb GVW
• Fits 1979-1980 GMC G3500, front; single rear wheels; 11 inch rear drums
• Fits 1974-1978 Chevrolet C20 Suburban, front; 13 inch rear drums; JB7 brakes; over 7,100 lb GVW
• Fits 1975-1978 Chevrolet C30, front; 2-1/2 inch rear shoes; JB7 brakes
• Fits 1978 Chevrolet G30, front; single rear wheels; 13 inch rear drums; JB7 brakes
• Fits 1975-1978 Chevrolet P30, front; 13 x 2-1/2 inch rear shoes; JB7 brakes
• Fits 1976-1978 GMC G35, front; single rear wheels; 11 inch or 13 inch rear drums
• Fits 1975-1977 Chevrolet C20, front; 13 inch rear drums; JB7 brakes
• Fits 1976-1977 Chevrolet G30, front; single rear wheels; 13 inch rear drum brakes; JB7 brakes
• Fits 1975-1977 Chevrolet P20, front; 13 inch rear drums; JB7 brakes
• Fits 1975 Chevrolet G30, front; single rear wheels
• Fits 1975 GMC G35, front; single rear wheels
• Fits 1974 GMC G35/G3500 Van, front; single rear wheels
• Fits 1973 Chevrolet C20 Suburban, front; 13-inch rear disc brake pads or rear disc brake rotor designed for 11 inch rear drums
• Fits 1973 GMC G35/G3500 Van, front; dual rear wheels
• Fits 1971-1972 Chevrolet C20 Suburban, front
• Fits 1971-1972 GMC G35/G3500 Van, front

What This Brake Kit Helps Address

• Front brake wear from aging rotors and pads
• Brake noise caused by worn or fatigued hardware
• Uneven braking from rotor surface variation or pad transfer issues
• Corrosion on exposed rotor surfaces
• Longer service time from cleaning oil-coated rotors before installation

Installation Notes and Tips

Verify axle, brake package, and rear drum or rear disc configuration before ordering, especially on Chevrolet C20, Chevrolet P20, GMC P2500, and related heavy-duty applications. The rotors are shipped dry and ready to install, and the non-directional finish supports a more even pad bed-in. Inspect caliper condition, slide points, and mounting surfaces during service to help ensure proper brake operation.

Quality Assurance

DFC GEOSPEC rotors are machined to tight tolerances, 100% inspected for critical dimensions, and vented rotors are balance-checked during production. The rotors carry a 12-month warranty against defects in material and workmanship.