Dynamite Friction 604-31027 Disc Brake Rotor - Front

Overview of Dynamite Friction DFC GEOSPEC Coated Rotor 604-31027

The Dynamite Friction DFC GEOSPEC Coated Rotor 604-31027 is engineered for reliable braking performance on select BMW models. Designed as a vented disc brake rotor, it offers consistent heat dissipation and durability for vehicles such as the BMW 318i, 320i, and Z4.

• Nominal thickness: 22 mm
• Discard thickness: 20.4 mm
• Outside diameter: 286 mm
• Inside diameter: 79 mm
• Bolt hole diameter: 15 mm
• Bolt hole quantity: 5
• Height: 51.7 mm
• Vented rotor design for improved cooling

Detailed Product Description and Specifications

This disc brake rotor, part number 604-31027, is specifically designed for BMW vehicles including the 318i, 318is, 318ti, 320i, 323Ci, 323i, 323is, 325i, 325is, 328i, 328is, Z3, and Z4 models. The rotor features a vented design that enhances heat dissipation during braking, reducing the risk of brake fade under demanding conditions. With a nominal thickness of 22 mm and a discard thickness of 20.4 mm, this rotor maintains structural integrity and safety throughout its service life. The 286 mm outside diameter and 79 mm inside diameter ensure proper fitment and compatibility with the specified BMW models. The rotor includes five bolt holes with a diameter of 15 mm, matching the factory specifications for secure installation. The height of 51.7 mm supports proper caliper clearance and brake system function.

DFC GEOSPEC Coated Rotor Product Line

The DFC GEOSPEC Coated Rotor line by Dynamite Friction is designed to provide enhanced corrosion resistance and consistent braking performance. The coating helps protect the rotor surface from rust and environmental wear, extending the rotor’s usable life. This product line focuses on maintaining OEM fitment and performance standards, making it suitable for BMW vehicles requiring reliable replacement rotors that meet factory specifications.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on BMW 318i, 320i, and Z4 models
• Improves braking consistency by reducing heat-related fade
• Addresses rotor corrosion and surface rust issues
• Restores proper rotor thickness for safe braking performance
• Ensures correct fitment with factory bolt pattern and dimensions

Installation Notes and Tips

• Verify rotor thickness before installation; replace if below 20.4 mm discard thickness
• Ensure proper cleaning of hub surface to prevent rotor runout
• Torque bolts to manufacturer specifications for secure fitment
• Inspect brake pads and calipers during rotor replacement for optimal system performance
• Follow vehicle-specific service manual instructions for brake system maintenance

Quality Assurance and Warranty

Dynamite Friction rotors, including the DFC GEOSPEC Coated Rotor 604-31027, are manufactured to meet or exceed OEM standards for fit, form, and function. The coating provides additional protection against corrosion, contributing to longer service life. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.