Dynamite Friction 631-31053R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31053R) is engineered for BMW 330Ci, 330i, and 330xi models. Designed to enhance braking performance, this vented disc brake rotor features a directional, slotted, and drilled surface for improved heat dissipation and consistent stopping power.

• Compatible with BMW 330Ci, 330i, and 330xi models
• Part Number: 631-31053R
• Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 21.8 mm; discard thickness: 20.4 mm
• Outside diameter: 320 mm; overall height: 60.5 mm
• 5 bolt holes with 14.7 mm diameter; bolt circle diameter: 120 mm
• Zinc silver hat finish with rust-resistant coating
• Directional brake surface for optimized performance

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 to improve brake pad bite and reduce heat buildup. This rotor’s zinc silver hat finish and rust-resistant coating help maintain durability and corrosion resistance, making it suitable for daily driving and spirited use on BMW 330 series vehicles.

Technical Specifications and Features

This disc brake rotor is vented to allow better airflow and heat dissipation, which helps prevent brake fade during extended braking. The rotor’s nominal thickness is 21.8 mm, with a discard thickness of 20.4 mm, ensuring a long service life before replacement is necessary. The rotor measures 320 mm in outside diameter and 60.5 mm in overall height, fitting precisely on BMW 330Ci, 330i, and 330xi models. The 5 bolt holes with a diameter of 14.7 mm and a bolt circle diameter of 120 mm ensure secure mounting. The directional slotted and drilled surface improves water and debris evacuation, enhancing braking consistency in various conditions.

Common Applications and Problem Solving

• Reduces brake fade during aggressive driving or towing
• Improves heat dissipation to extend rotor and pad life
• Enhances wet weather braking performance by channeling water away
• Minimizes brake dust buildup on wheels
• Restores braking efficiency on BMW 330Ci, 330i, and 330xi models

Installation Notes and Tips

Ensure the rotor surface is clean and free of oil or debris before installation. Verify the rotor thickness is above the discard thickness of 20.4 mm before mounting. Use proper torque specifications for the 5 lug bolts with 14.7 mm diameter to avoid warping. The directional surface requires correct orientation during installation to maintain optimal performance.

Quality Assurance and Warranty

Dynamite Friction manufactures this rotor with rust-resistant coatings and zinc silver hat finish to enhance durability. While specific warranty details are not provided, Dynamite Friction products typically meet industry standards for quality and reliability. Always consult the vehicle manufacturer’s guidelines and local regulations when replacing brake components.