Dynamite Friction 631-31135L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31135L) is engineered for BMW X5 models requiring reliable braking performance. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance heat dissipation and maintain consistent stopping power under demanding conditions.

• Compatible with BMW X5 vehicles
• Part number: 631-31135L
• Vented rotor design for improved cooling
• Directional, slotted and drilled surface for enhanced brake pad bite and debris removal
• Zinc silver hat finish with rust-resistant coating
• Nominal thickness: 30 mm; discard thickness: 28.4 mm
• Five bolt holes with 16.6 mm diameter and 120 mm bolt circle diameter
• Overall diameter: 332 mm; height: 62.1 mm

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

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and precision slots to improve braking efficiency and rotor longevity. The silver zinc coating on the rotor hat provides corrosion resistance, extending the rotor's service life. This product line is designed to meet the specific braking demands of performance-oriented vehicles like the BMW X5, offering a balance between durability and heat management.

Technical Specifications and Features

This disc brake rotor is vented to allow air circulation between the rotor surfaces, reducing heat buildup during braking. The directional surface pattern with drilled holes and slots helps evacuate gases, dust, and water, improving brake pad contact and reducing fade. The rotor's nominal thickness is 30 mm, with a discard thickness of 28.4 mm, ensuring safe replacement intervals. The rotor features five bolt holes with a diameter of 16.6 mm and a bolt circle diameter of 120 mm, matching the BMW X5's hub specifications. The zinc silver hat finish and rust-resistant coating protect against corrosion, maintaining rotor integrity over time.

Applications and Problem Solving

• Replacement rotor for worn or warped BMW X5 brake rotors
• Improves heat dissipation to reduce brake fade during heavy use
• Enhances braking performance in wet or dusty conditions with slotted and drilled design
• Prevents rust and corrosion on rotor hats for longer service life
• Maintains proper fitment and alignment with precise bolt hole and center hole dimensions

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (28.4 mm) before installation
• Clean hub surface to prevent rotor runout and ensure proper fit
• Torque bolts to manufacturer specifications for BMW X5
• Inspect brake pads for wear and replace if necessary when installing new rotors
• Perform a bed-in procedure after installation to optimize braking performance

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-31135L rotor to meet OEM standards for fit and function on BMW X5 vehicles. The rust-resistant coating and zinc silver finish contribute to durability and corrosion resistance. While specific warranty details are not provided, Dynamite Friction products typically adhere to industry quality controls to ensure reliable performance and safety.