Dynamite Friction 830-31111L Disc Brake Rotor - Rear Left

Reliable Disc Brake Rotor for BMW Models

The Dynamite Friction DFC Geoperformance Rotor 830-31111L is engineered to provide consistent braking performance for select BMW vehicles. Designed with precision, this vented, directional rotor enhances heat dissipation and braking efficiency for models like the 320i, 328i, and 428i.

• Compatible with BMW 120i, 220i, 228i, 228i xDrive, 230i, 230i xDrive, 320i, 323i, 325i, 328d, 328i, and 428i
• Directional slotted and drilled surface for improved brake pad contact and heat management
• Vented rotor design with 300 mm outside diameter for enhanced cooling
• Rust resistant coating with Geospec silver grey hat finish for durability
• Nominal thickness of 20 mm and discard thickness of 18.4 mm for safe service limits
• 5 bolt holes with 16.6 mm diameter and 120 mm bolt circle diameter for precise fitment

DFC Geoperformance Rotor Product Line Overview

The DFC Geoperformance Rotor line by Dynamite Friction focuses on delivering rotors with advanced surface treatments and vented designs to optimize braking performance and rotor longevity. This product line incorporates directional, slotted, and drilled surfaces to improve pad bite and heat dissipation, making it suitable for performance-oriented BMW models requiring reliable stopping power under varied driving conditions.

Technical Specifications and Features

The 830-31111L rotor features a 300 mm outside diameter and an overall height of 66.4 mm, ensuring compatibility with the specified BMW models. Its vented construction allows air to flow between the rotor faces, reducing heat buildup during braking. The directional slotted and drilled surface enhances debris removal and cooling efficiency, contributing to consistent brake performance. The rotor’s hat is finished in Geospec silver grey, providing corrosion resistance alongside the rust resistant coating applied to the entire rotor. With a nominal thickness of 20 mm and a discard thickness of 18.4 mm, this rotor meets safety standards for wear limits. The 5-bolt hole pattern with a 120 mm bolt circle diameter and 16.6 mm bolt hole diameter ensures a secure and precise fit.

Applications and Problem Solving

• Replacement for worn or warped rotors on compatible BMW 3 Series and 4 Series models
• Improves braking consistency and heat dissipation during spirited driving or daily use
• Addresses brake fade caused by overheating through vented and slotted design
• Reduces rust and corrosion for longer rotor life in various weather conditions
• Restores proper rotor thickness to maintain braking safety and performance

Installation Notes and Tips

Ensure the rotor surface and hub are clean and free of debris before installation. Verify the bolt hole pattern and rotor orientation, as this rotor features a directional braking surface. Use proper torque specifications for the 5 lug bolts to avoid warping. It is recommended to replace brake pads simultaneously to ensure optimal contact and performance.

Quality Assurance and Warranty

Dynamite Friction manufactures the DFC Geoperformance Rotor 830-31111L to meet OEM standards for fit and function. The rotor includes a rust resistant coating and durable finishes to extend service life. Warranty details should be confirmed with the distributor or manufacturer, as coverage may vary.