Dynamite Friction 830-31130L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Geoperformance Rotor

The Dynamite Friction DFC Geoperformance Rotor - Drilled and Slotted (part number 830-31130L) is engineered for precision braking performance. Designed specifically for select BMW and Toyota models, this vented disc brake rotor offers enhanced heat dissipation and improved stopping power.

• Vented disc brake rotor with drilled and slotted surface
• Nominal thickness of 24 mm with discard thickness at 22.4 mm
• Directional brake surface for optimized performance
• Rust resistant coating for extended durability
• Geospec silver grey hat finish for corrosion protection and aesthetics
• Fits vehicles with 5 lug holes and 112 mm bolt circle diameter
• Outside diameter of 345 mm and overall height of 64.1 mm

Detailed Product Features and Specifications

This Dynamite Friction rotor features a vented design that helps reduce brake fade by improving airflow and heat dissipation during heavy braking. The drilled and slotted surface enhances water and debris evacuation, maintaining consistent braking performance in various driving conditions. The rotor’s directional surface is engineered to optimize pad contact and braking efficiency.

With a nominal thickness of 24 mm and a discard thickness of 22.4 mm, this rotor maintains structural integrity and safety throughout its service life. The rotor’s bolt hole diameter and stud/lug hole diameter are both 16.7 mm, accommodating 5 lug holes arranged on a 112 mm bolt circle diameter, ensuring precise fitment.

The rotor’s hat is finished in Geospec silver grey, providing corrosion resistance and a clean appearance. Additionally, the entire rotor is coated with a rust-resistant layer to extend its lifespan and reduce maintenance needs.

DFC Geoperformance Rotor - Drilled and Slotted Product Line

The DFC Geoperformance Rotor - Drilled and Slotted line by Dynamite Friction focuses on delivering rotors that combine advanced surface treatments with durable construction. This product line is designed to meet the demands of drivers who require reliable braking performance under varied conditions, including spirited driving and daily use. The drilled and slotted design improves heat management and pad bite, while the vented rotor structure supports consistent braking response.

Compatible Vehicles and Applications

This rotor is compatible with a range of BMW and Toyota models, including but not limited to BMW 230i, 330i, 430i, 530i, 540i, 740i, 840i, M240i, M340i, M440i, M550i, X3, X4, X5, X6, X7, and Z4, as well as Toyota GR Supra, i4, i5, and iX. It is designed for vehicles requiring a 345 mm rotor diameter and 5-lug bolt pattern with 112 mm bolt circle diameter.

• Improves braking performance on BMW 330i xDrive and 430i Gran Coupe
• Reduces brake fade during aggressive driving on Toyota GR Supra
• Enhances heat dissipation for BMW M340i and M440i xDrive models
• Maintains consistent braking feel on BMW X5 and X7 SUVs
• Provides corrosion resistance for vehicles exposed to wet or salty conditions

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (22.4 mm) before installation
• Verify bolt hole pattern and diameter match vehicle specifications
• Clean rotor surface before installation to remove any protective coatings
• Use proper torque specifications for lug nuts to avoid rotor warping
• Inspect brake pads and calipers for wear during rotor replacement

Quality Assurance and Warranty

Dynamite Friction manufactures the 830-31130L rotor to meet strict quality standards, ensuring reliable performance and durability. The rust-resistant coating and Geospec silver grey hat finish contribute to long-term corrosion protection. Please refer to Dynamite Friction’s official warranty policy for specific coverage details.