Dynamite Friction 620-31194D Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor - Drilled

The Dynamite Friction DFC Brake Rotor - Drilled (part number 620-31194D) is engineered for BMW M2, M3, and M4 models requiring reliable braking performance. This disc brake rotor features a drilled surface design and rust-resistant coating to maintain durability and consistent stopping power.

• Compatible with BMW M2, M3, and M4 models
• Part number 620-31194D for precise identification
• Directional X drilled surface for improved heat dissipation
• Rust preventative hat finish and rust-resistant coating
• Plain disc finish with 370 mm outside diameter
• Discard thickness of 22.4 mm to ensure safe replacement intervals

Details on the DFC Brake Rotor - Drilled Product Line

The DFC Brake Rotor - Drilled line by Dynamite Friction focuses on rotors designed with drilled surfaces to enhance brake cooling and reduce fade under demanding conditions. This product line balances performance and durability, making it suitable for high-performance BMW vehicles such as the M2, M3, and M4. The directional drilled design aids in channeling gases and debris away from the braking surface, contributing to consistent pedal feel and braking efficiency.

Technical Specifications and Features

This disc brake rotor features a 370 mm outside diameter and a plain disc finish that provides a smooth braking surface. The rotor’s hat is treated with a rust preventative finish, complemented by an overall rust-resistant coating to extend service life. The directional X drilled surface pattern improves heat dissipation and helps maintain braking performance during aggressive driving. The discard thickness is set at 22.4 mm, indicating the minimum safe thickness for rotor replacement to maintain braking safety and effectiveness.

Applications and Problem Solving

• Replacement rotor for worn or warped brake discs on BMW M2, M3, and M4
• Improves heat dissipation to reduce brake fade during spirited driving
• Helps prevent rust and corrosion on braking surfaces and rotor hats
• Restores braking performance compromised by surface damage or wear
• Maintains consistent pedal feel with directional drilled design

Installation Notes and Tips

Ensure the rotor is compatible with your specific BMW model (M2, M3, or M4) before installation. Clean the hub surface thoroughly to prevent uneven rotor mounting. Follow manufacturer torque specifications for lug nuts to avoid rotor warping. Since this rotor features a directional drilled surface, install it according to the indicated rotation direction for optimal performance.

Quality Assurance and Warranty

Dynamite Friction manufactures this rotor to meet OEM standards for fit and function. The rust-resistant coating and rust preventative hat finish contribute to long-term durability. Please refer to Dynamite Friction’s warranty policy for coverage details related to defects or premature wear.