Dynamite Friction 631-31130R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31130R) is engineered for precision braking performance. Designed specifically for select BMW and Toyota models, this vented disc brake rotor offers enhanced heat dissipation and reliable stopping power.

• Disc type: Vented, drilled and slotted surface
• Nominal thickness: 24 mm with discard thickness at 22.4 mm
• Outside diameter: 345 mm for optimal braking surface
• Hat finish: Zinc silver coating for corrosion resistance
• Rust resistant coating applied to extend rotor life
• Bolt hole quantity: 5 with 16.7 mm diameter
• Directional brake surface for improved water and debris evacuation
• Bolt circle diameter: 112 mm, center hole diameter: 67 mm

Details on the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line from Dynamite Friction focuses on rotors that combine drilled holes and precision slots to improve brake pad bite and reduce heat buildup. This rotor’s vented design enhances airflow, helping to maintain consistent braking performance under demanding conditions. The zinc silver hat finish and rust resistant coating protect against corrosion, making it suitable for vehicles exposed to varied weather conditions.

Technical Specifications and Features

This rotor features a 345 mm outside diameter and a nominal thickness of 24 mm, with a discard thickness of 22.4 mm to ensure safe replacement intervals. The vented rotor design improves heat dissipation, reducing the risk of brake fade during extended use. The drilled and slotted surface is directional, which aids in channeling water and debris away from the braking surface, maintaining effective contact between the rotor and brake pads. The zinc silver hat finish and rust resistant coating provide additional durability against corrosion, extending the rotor’s service life.

Compatible Vehicles and Applications

• Compatible with BMW models including 230i, 330i, 430i, 530i, 540i, 640i xDrive Gran Turismo, 740i, 750i, 840i, M240i, M340i, M440i, M550i, X3, X4, X5, X6, X7, and Z4
• Compatible with Toyota GR Supra
• Ideal for drivers seeking replacement rotors for vented, drilled, and slotted disc brake systems

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup during aggressive driving
• Reduced braking efficiency due to water or debris on the rotor surface
• Corrosion and rust formation on rotor hats and braking surfaces
• Uneven brake pad wear from insufficient heat dissipation
• Vibration or noise caused by warped or damaged rotors

Installation Notes and Tips

Ensure the rotor surface is clean and free of any protective coatings before installation. Verify bolt hole alignment with the vehicle’s hub using the 5-bolt pattern and 112 mm bolt circle diameter. Use proper torque specifications for lug nuts to avoid rotor warping. Directional rotors must be installed with the correct rotation direction to maintain optimal performance. Inspect brake pads and calipers during installation to ensure compatibility and proper function.

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-31130R rotor to meet or exceed OEM specifications for fit, form, and function. The rust resistant coating and zinc silver hat finish contribute to long-term durability. While specific warranty details are not provided, Dynamite Friction products typically undergo rigorous quality control to ensure reliability and consistent braking performance.