Dynamite Friction 631-31136L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31136L) is engineered for BMW X5 models requiring reliable braking performance. This solid 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: 631-31136L
• Solid rotor with drilled and slotted surface
• Nominal thickness: 12 mm; discard thickness: 10.4 mm
• Outside diameter: 324 mm; overall height: 80.1 mm
• Directional brake surface for optimized performance
• Rust-resistant zinc silver hat finish
• 5 bolt holes with 16.6 mm diameter and 120 mm bolt circle diameter

Product Line Details: DFC Brake Rotor - Drilled and Slotted - Silver

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and slots to improve brake pad bite and reduce heat buildup. The silver zinc coating on the rotor hat provides corrosion resistance, extending rotor 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 effective heat management.

Technical Specifications and Features

This rotor is a solid type with a nominal thickness of 12 mm and a discard thickness of 10.4 mm, ensuring it meets safety standards for replacement intervals. The 324 mm outside diameter and 80.1 mm overall height are tailored to fit the BMW X5 brake assembly precisely. The rotor features a directional surface pattern with drilled holes and slots that help evacuate gases and debris, improving braking consistency. The zinc silver finish on the hat section provides rust resistance, which is critical for maintaining structural integrity over time. The rotor includes five bolt holes with a diameter of 16.6 mm arranged on a 120 mm bolt circle diameter, matching the BMW X5's hub specifications.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW X5 models
• Improves heat dissipation to reduce brake fade during heavy braking
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Addresses corrosion issues with rust-resistant coating
• Enhances braking performance in wet conditions through slotted and drilled design

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 10.4 mm before installation. Clean the rotor surface to remove any protective coating or debris prior to mounting. Verify bolt hole alignment with the BMW X5 hub using the 120 mm bolt circle diameter and 16.6 mm bolt hole diameter. Proper torque specifications should be followed to avoid rotor warping. Directional rotors must be installed with the correct rotation direction to maintain optimal performance.

Quality Assurance and Warranty

Dynamite Friction manufactures this rotor to meet OEM specifications for fit and function on BMW X5 vehicles. The rust-resistant zinc silver finish helps extend rotor life by preventing corrosion. While specific warranty details are not provided, Dynamite Friction products typically adhere to industry standards for durability and performance.