Dynamite Friction 633-31117R Disc Brake Rotor - Rear Right

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

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31117R) is engineered for enhanced braking performance and durability. Designed specifically for select BMW models, this vented disc brake rotor offers improved heat dissipation and consistent stopping power under demanding conditions.

• Vented disc design for efficient heat dissipation
• Drilled and slotted surface for better brake pad bite and debris removal
• Rust-resistant zinc black hat finish for corrosion protection
• Directional brake surface optimized for performance
• Compatible with multiple BMW models including 320i xDrive, 328i, 330i, 428i, and X1
• 5 bolt holes with 16.8 mm diameter and 120 mm bolt circle diameter
• Nominal thickness of 20 mm with discard thickness at 18.4 mm
• Overall diameter of 300 mm and height of 66.3 mm

Detailed Product Features and Specifications

This Dynamite Friction rotor features a vented design that helps reduce brake fade by allowing air to flow between the rotor surfaces, maintaining optimal operating temperatures. The drilled and slotted surface improves water and gas evacuation, enhancing braking consistency in wet or high-performance driving scenarios. The rotor’s directional surface ensures proper rotation for maximum efficiency and pad contact.

The zinc black coating on the rotor hat provides corrosion resistance, extending the rotor’s service life. With a nominal thickness of 20 mm and a discard thickness of 18.4 mm, this rotor meets strict safety and performance standards. The 5-lug bolt pattern with a 120 mm bolt circle diameter and 16.8 mm bolt hole diameter ensures precise fitment on compatible BMW vehicles.

About the DFC Brake Rotor - Drilled and Slotted - Black Product Line

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction focuses on delivering rotors that combine functional design with durability. This product line emphasizes vented rotors with directional drilled and slotted surfaces, tailored to improve braking performance while resisting corrosion through specialized coatings. The black zinc finish on the rotor hat is a signature feature that balances aesthetics with protection.

Compatible BMW Models and Applications

• BMW 320i xDrive
• BMW 325xi
• BMW 328d xDrive, 328i, 328i GT xDrive, 328i xDrive, 328xi
• BMW 330e, 330i, 330i GT xDrive, 330i xDrive
• BMW 420i, 428i, 428i Gran Coupe, 428i xDrive, 428i xDrive Gran Coupe
• BMW 430i, 430i Gran Coupe, 430i xDrive, 430i xDrive Gran Coupe
• BMW X1

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup
• Uneven brake pad wear due to poor rotor surface design
• Corrosion and rust on rotor hats reducing lifespan
• Reduced braking efficiency in wet or debris-filled conditions
• Vibration or noise from warped or damaged rotors

Installation Notes and Tips

Ensure the rotor is installed with the directional surface rotating correctly according to the vehicle’s forward motion. Verify bolt hole alignment with the 5-lug, 120 mm bolt circle pattern. Check rotor thickness before installation to confirm it meets or exceeds the discard thickness of 18.4 mm. Proper torque specifications should be followed to avoid warping or damage during installation.

Quality Assurance and Warranty

Dynamite Friction manufactures the 633-31117R rotor to meet OEM standards for fitment and performance. The rust-resistant zinc black finish adds durability against environmental factors. While specific warranty details are not provided, Dynamite Friction products typically undergo rigorous quality control to ensure reliability and safety for BMW brake system applications.