Dynamite Friction 631-31114L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor 631-31114L

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31114L) is engineered for precision braking performance on select BMW models. Designed with a vented, directional surface, this rotor enhances heat dissipation and braking consistency for vehicles such as the BMW 330i xDrive and 435i Gran Coupe.

• Disc type: Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 24 mm with discard thickness at 22.4 mm
• Outside diameter: 345 mm for optimal fitment
• Hat finish: Zinc silver coating for corrosion resistance
• Rust resistant coating applied to extend rotor life
• Bolt hole quantity: 5 with 16.6 mm diameter
• Directional brake surface for improved water and debris evacuation
• Bolt circle diameter: 120 mm, center hole diameter: 75 mm

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 delivering rotors with enhanced cooling and braking efficiency. The drilled and slotted surface design helps reduce brake fade by allowing gases and heat to escape more effectively. The zinc silver hat finish and rust resistant coating provide added protection against corrosion, making this rotor suitable for BMW models that demand reliable stopping power under varied driving conditions.

Technical Specifications and Features

This rotor features a vented design with an overall height of 66.2 mm, which improves airflow and heat dissipation during braking. The directional slotted and drilled surface optimizes braking performance by channeling water and debris away from the contact area. With a bolt circle diameter of 120 mm and five lug holes sized at 16.6 mm, it is specifically engineered for BMW vehicles including the 230i, 328i xDrive, 340i, and M240i xDrive among others. The nominal thickness of 24 mm ensures durability, while the discard thickness of 22.4 mm indicates when replacement is necessary to maintain safety and performance.

Compatible BMW Models and Applications

• BMW 230i and 230i xDrive
• BMW 328d xDrive, 328i, and 328i xDrive
• BMW 330i xDrive and 335i variants
• BMW 340i and 340i xDrive
• BMW 428i, 428i Gran Coupe, and 428i xDrive
• BMW 430i, 430i xDrive, 435i, and 435i Gran Coupe
• BMW 440i, 440i Gran Coupe, and 440i xDrive models
• BMW ActiveHybrid 3, M240i, and M240i xDrive

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (22.4 mm) before installation
• Clean mounting surface to prevent rotor runout
• Torque lug nuts to manufacturer specifications for BMW models
• Check compatibility with existing brake pads and calipers
• Follow proper bedding-in procedures after installation for optimal performance

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-31114L rotor with rust resistant coatings and zinc silver hat finish to enhance durability and corrosion resistance. While specific warranty details are not provided, Dynamite Friction products typically meet or exceed OEM standards for fit and function, ensuring reliable braking performance on compatible BMW vehicles.