Dynamite Friction 631-31064L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31064L) is engineered for BMW models including the 535i, 545i, 550i, 645Ci, and 650i. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 535i, 545i, 550i, 645Ci, and 650i
• Part Number: 631-31064L
• Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 24 mm; discard thickness: 22.4 mm
• Outside diameter: 345 mm; overall height: 63.2 mm
• 5 bolt holes with 14.5 mm diameter; bolt circle diameter: 120 mm
• Zinc silver hat finish with rust-resistant coating
• Directional brake surface for optimized performance

Detailed Product Description

This DFC Brake Rotor - Drilled and Slotted - Silver from Dynamite Friction is designed to meet the specific braking requirements of select BMW vehicles. The rotor’s vented design improves airflow to reduce heat buildup during braking, which helps maintain consistent stopping power. The drilled and slotted surface aids in debris removal and water dispersion, contributing to improved brake pad contact and reduced fade. The rotor features a nominal thickness of 24 mm and a discard thickness of 22.4 mm, ensuring durability and safety over its service life.

The rotor’s hat is finished in zinc silver with a rust-resistant coating to protect against corrosion, extending the rotor’s lifespan. With a 345 mm outside diameter and 63.2 mm overall height, this rotor fits precisely on BMW 5 and 6 Series models listed. The 5-bolt pattern with 14.5 mm diameter holes and a 120 mm bolt circle diameter ensures secure mounting and compatibility.

DFC Brake Rotor - Drilled and Slotted - Silver Product Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and slots with a vented design to optimize braking efficiency and heat management. This product line is engineered to provide reliable performance for vehicles requiring enhanced rotor cooling and surface cleaning during braking, making it suitable for BMW models that demand consistent and responsive braking under various driving conditions.

Common Applications and Problem Solving

• Reduces brake fade caused by excessive heat buildup
• Improves braking performance in wet conditions by dispersing water
• Minimizes brake dust and debris accumulation on rotor surface
• Prevents rust and corrosion with protective coating
• Maintains structural integrity with vented rotor design

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 22.4 mm before installation. Clean the rotor surface to remove any protective oils or residues prior to mounting. Verify bolt hole alignment with the 5-bolt, 120 mm bolt circle pattern on your BMW 535i, 545i, 550i, 645Ci, or 650i. Proper torque specifications should be followed to secure the rotor firmly. It is recommended to inspect brake pads and related components during installation for optimal braking system performance.

Quality Assurance

Dynamite Friction manufactures the 631-31064L rotor to meet industry standards for durability and performance. The rust-resistant zinc silver coating enhances longevity by protecting against corrosion. While specific warranty details are not provided, Dynamite Friction products are designed to comply with OEM fitment and quality requirements for BMW vehicles.