Dynamite Friction 604-54109 Disc Brake Rotor - Front

DFC GEOSPEC Coated Rotor for Ford Front Brakes

The Dynamite Friction DFC GEOSPEC Coated Rotor, part number 604-54109, is a vented front disc brake rotor built for select Ford Bronco and Ford F-150 applications. It is sized for the listed fitments with a 298 mm outside diameter, 69 mm height, 5-bolt pattern, and 30.4 mm nominal thickness.

The GEOSPEC coated rotor line focuses on corrosion resistance on non-friction surfaces while maintaining the braking surface needed for consistent pad contact. For Ford Bronco and Ford F-150 front brake service, 604-54109 provides a direct replacement format matched to the specified hub and production-date requirements.

Key Features

• Part number 604-54109 from Dynamite Friction
• DFC GEOSPEC Coated Rotor line for corrosion-resistant non-friction surfaces
• Vented disc brake rotor construction
• Outside diameter: 298 mm
• Nominal thickness: 30.4 mm
• Discard thickness: 28.45 mm
• 5 bolt holes with 16.4 mm bolt hole diameter
• Inside diameter: 98.5 mm
• Height: 69 mm
• Front axle application for listed Ford Bronco and Ford F-150 fitments

Detailed Description

Built for front brake service, this DFC GEOSPEC Coated Rotor is engineered around the dimensions required by the listed Ford Bronco and Ford F-150 applications. The vented design supports heat management during repeated braking, while the coated finish helps protect exposed rotor surfaces from corrosion. If you are replacing a worn front rotor on a 1976-1993 Ford Bronco or 1976-1993 Ford F-150 application listed below, 604-54109 matches the specified configuration details, including production-date notes for certain 1988 Bronco and 1987-1988 F-150 models.

Compatible fitments include Fits 1976-1985 Ford Bronco, front; Fits 1986-1987 Ford Bronco, front; Fits 1988 Ford Bronco, front with vehicle production date from 5/88 or to 4/88 and auto locking hub; Fits 1989-1993 Ford Bronco, front; Fits 1976-1986 Ford F-150, front; Fits 1987-1988 Ford F-150, front with auto locking hubs; and Fits 1989-1993 Ford F-150, front. Part number 604-54109 is also a useful reference when searching for a front rotor for classic Ford Bronco and Ford F-150 brake repair.

What It Helps Fix

• Front brake pulsation caused by rotor wear or thickness variation
• Corrosion on exposed rotor surfaces
• Reduced braking consistency from a worn vented rotor
• Brake noise related to uneven rotor condition
• Service issues on front brake systems with the listed Ford fitments

Installation Notes and Tips

Verify rotor dimensions, hub style, and production-date notes before installation, especially on 1988 Bronco and 1987-1988 F-150 applications. Inspect pads, calipers, and wheel bearings during rotor replacement, and confirm the rotor seats cleanly on the hub before final assembly. For best results, follow the vehicle service manual for torque and bedding procedures.

Quality Assurance

Dynamite Friction’s DFC GEOSPEC Coated Rotor line is built to meet the dimensional and application requirements listed for these Ford front brake fitments. The coated finish and vented rotor design support dependable service in the specified applications.