Dynamite Friction 631-31104L Disc Brake Rotor - Rear Left

Overview of the DFC Brake Rotor - Drilled and Slotted - Silver

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31104L) is engineered for BMW 5 Series models including the 528i, 528i xDrive, 535d, 535d xDrive, 535i, 535i xDrive, and ActiveHybrid 5. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Nominal thickness: 20 mm with a discard thickness of 18.4 mm
• Vented rotor design for improved cooling
• Directional slotted and drilled surface for debris removal and consistent pad contact
• Zinc silver hat finish with rust-resistant coating
• Overall diameter of 330 mm and height of 69.1 mm
• Five bolt holes with 16.6 mm diameter and 120 mm bolt circle diameter
• Center hole diameter of 75 mm for precise fitment

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 slots on the braking surface. This design aids in reducing brake fade by improving heat dissipation and helps channel away water and brake dust. The zinc silver hat finish provides corrosion resistance, extending rotor life especially in environments prone to rust. This rotor line is tailored for vehicles requiring reliable vented rotors with directional braking surfaces.

Technical Description and Specifications

This disc brake rotor is vented, allowing air to flow between the rotor faces to reduce heat buildup during braking. The rotor’s nominal thickness is 20 mm, with a discard thickness of 18.4 mm, indicating when replacement is necessary. The rotor surface is both drilled and slotted, which helps maintain consistent braking performance by removing gases and debris from the pad interface. The rotor’s overall diameter is 330 mm, with a height of 69.1 mm, ensuring compatibility with specified BMW 5 Series models. The zinc silver hat finish and rust-resistant coating protect against corrosion, maintaining structural integrity over time.

Compatible Vehicles and Common Applications

• Replacement rotor for BMW 528i and 528i xDrive models
• Suitable for BMW 535d and 535d xDrive variants
• Fits BMW 535i and 535i xDrive vehicles
• Compatible with BMW ActiveHybrid 5
• Ideal for addressing brake fade, rotor warping, and uneven pad wear

Installation Notes and Tips

Ensure the rotor is installed on the correct side as it features a directional braking surface. Verify bolt hole alignment with the 5-lug, 120 mm bolt circle diameter pattern. Clean the rotor surface before installation to remove any protective coatings or residues. Check the discard thickness of 18.4 mm regularly to determine rotor replacement timing. Proper torque specifications should be followed for the 16.6 mm bolt holes to avoid rotor damage.

Quality Assurance and Warranty

Dynamite Friction rotors undergo rigorous quality control to meet OEM standards for fitment and performance. The rust-resistant coating and zinc silver hat finish contribute to durability and corrosion resistance. Please refer to Dynamite Friction’s warranty policy for specific coverage details related to the 631-31104L rotor.