Dynamite Friction 633-31112R Disc Brake Rotor - Front Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31112R) is engineered for BMW models including the 335i, 340i, 435i, 440i, and ActiveHybrid 3 series. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Nominal thickness: 30 mm with a discard thickness of 28.4 mm
• Vented rotor design for improved cooling
• Directional slotted and drilled surface for debris removal and consistent braking
• Black zinc-coated hat finish for corrosion resistance
• Rust resistant coating applied to rotor surface
• 5 bolt holes with 16.5 mm diameter and 120 mm bolt circle diameter
• Overall diameter of 370 mm and height approximately 73.6 mm

DFC Brake Rotor - Drilled and Slotted - Black Product Line

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction focuses on rotors that combine drilled holes and slots with a corrosion-resistant black zinc hat finish. This product line is designed to provide enhanced heat dissipation and improved braking consistency under demanding conditions, making it suitable for performance-oriented BMW vehicles such as the 335i and 440i series.

Technical Details and Compatibility

This disc brake rotor is vented to allow better airflow and heat management during braking, reducing the risk of brake fade. The directional slotted and drilled surface helps channel away water, dust, and gases, maintaining effective contact between the brake pad and rotor. The rotor’s nominal thickness is 30 mm, with a discard thickness of 28.4 mm, ensuring a long service life before replacement is necessary. The zinc black hat finish and rust resistant coating protect against corrosion, extending rotor durability.

Applications and Problem Solving

• Compatible with BMW 335i, 335i xDrive, 340i, 340i xDrive, 435i, 435i Gran Coupe, 435i xDrive, 435i xDrive Gran Coupe, 440i, 440i Gran Coupe, 440i xDrive, 440i xDrive Gran Coupe, and ActiveHybrid 3 models
• Addresses brake fade caused by excessive heat buildup
• Improves braking performance in wet or dusty conditions
• Reduces rotor warping and uneven pad wear
• Helps maintain consistent brake pedal feel under heavy use

Installation Notes and Tips

Ensure the rotor is installed on compatible BMW models listed above. 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. Proper torque specifications should be followed for lug nuts to avoid rotor distortion.

Quality Assurance

Dynamite Friction rotors are manufactured to meet OEM specifications for fit and function. The rust resistant coating and zinc black hat finish contribute to long-term durability. While no specific warranty information is provided, the product is designed to maintain performance and safety standards for the listed BMW models.