Dynamite Friction 633-31152L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31152L) is engineered for BMW X3 and X4 models. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW X3 and X4 models
• Directional slotted and drilled surface for improved brake pad bite and cooling
• Vented rotor design to reduce heat buildup
• Black zinc-coated hat finish for corrosion resistance
• Nominal thickness of 20 mm with discard thickness at 18.4 mm
• Five bolt holes with 16.6 mm diameter and 120 mm bolt circle diameter
• Overall diameter of 330 mm and height of 71 mm

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

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction focuses on rotors that combine drilled holes and slots on the braking surface. This design aids in gas and dust evacuation while maintaining consistent braking performance. The black zinc coating on the rotor hat enhances rust resistance, extending rotor life in demanding conditions. This product line is tailored for drivers seeking reliable, vented rotors with directional braking surfaces for specific vehicle fitments like the BMW X3 and X4.

Technical Specifications and Features

This disc brake rotor is vented to improve heat dissipation during braking, helping to prevent brake fade. The rotor’s surface is both drilled and slotted, which assists in removing brake dust and gases generated under heavy braking. The directional surface design ensures optimal contact with brake pads for consistent stopping power. The rotor has a nominal thickness of 20 mm and a discard thickness of 18.4 mm, indicating when replacement is necessary. The zinc black finish on the hat provides corrosion resistance, important for maintaining structural integrity over time. The rotor features five bolt holes with a diameter of 16.6 mm and a bolt circle diameter of 120 mm, matching the BMW X3 and X4 specifications.

Applications and Problem Solving

• Replacement rotor for worn or warped brake rotors on BMW X3 and X4
• Improves heat dissipation to reduce brake fade during aggressive driving
• Helps eliminate brake pad glazing and uneven wear through slotted and drilled design
• Resists rust and corrosion for longer service life in wet or salty environments
• Maintains consistent braking performance with directional surface design

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 18.4 mm before installation. Clean the hub surface and mounting area to prevent rotor runout. Use proper torque specifications for the five 16.6 mm bolt holes arranged on a 120 mm bolt circle diameter. Verify compatibility with BMW X3 and X4 models before installation. Directional rotors must be installed with the correct rotation direction for optimal performance.

Quality Assurance

Dynamite Friction manufactures the 633-31152L rotor to meet OEM specifications for fit and function. The rust-resistant zinc black coating on the rotor hat enhances durability. While no specific warranty information is provided, Dynamite Friction products are designed to comply with industry standards for safety and reliability.