Dynamite Friction 830-31171L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Geoperformance Rotor

The Dynamite Friction DFC Geoperformance Rotor - Drilled and Slotted (part number 830-31171L) is engineered for enhanced braking performance on select BMW and Toyota models. Designed with a vented, directional surface, this rotor offers improved heat dissipation and consistent stopping power for vehicles like the BMW 330i and Toyota GR Supra.

• Disc type: Vented disc brake rotor with drilled and slotted surface
• Outside diameter: 330 mm for optimal fit and performance
• Nominal thickness: 24 mm with discard thickness at 22.4 mm
• Directional surface finish with plain disc and Geospec silver grey hat finish
• Rust resistant coating to reduce corrosion and extend rotor life
• 5 bolt holes with 16.6 mm diameter and 112 mm bolt circle diameter
• Center hole diameter: 67 mm, height: 66.6 mm

Detailed Product Description

This DFC Geoperformance Rotor - Drilled and Slotted is specifically designed to meet the braking demands of BMW and Toyota vehicles including the BMW 230i, 330e, 430i, 530i, X3, X4, Z4, and the Toyota GR Supra and i4 models. The vented rotor design improves airflow to reduce heat buildup during braking, while the drilled and slotted surface helps evacuate gases, dust, and water for consistent brake pad contact. The directional pattern enhances braking efficiency and reduces brake fade under demanding conditions.

The rotor features a plain disc finish combined with a Geospec silver grey hat finish, providing a corrosion-resistant surface that maintains structural integrity. The rust resistant coating further protects the rotor from environmental damage, extending its service life. With a bolt hole quantity of 5 and a bolt circle diameter of 112 mm, this rotor is engineered for precise fitment and secure mounting.

DFC Geoperformance Rotor - Drilled and Slotted Product Line

The DFC Geoperformance Rotor - Drilled and Slotted line from Dynamite Friction focuses on delivering rotors that balance performance and durability. This product line incorporates vented rotors with directional drilled and slotted surfaces to optimize heat dissipation and braking response. The Geospec silver grey hat finish and rust resistant coating are standard features that enhance longevity and maintain rotor condition under various driving conditions.

Applications and Problem Solving

• Improves braking performance on BMW 330i xDrive and Toyota GR Supra models
• Reduces brake fade during aggressive or repeated braking
• Minimizes rotor warping caused by excessive heat buildup
• Helps prevent corrosion and rust on rotor surfaces
• Maintains consistent brake pad contact by evacuating dust and gases

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness of 22.4 mm before installation
• Verify bolt hole alignment with 5-lug, 112 mm bolt circle diameter hubs
• Clean rotor surface before installation to remove any protective coatings or residues
• Use proper torque specifications for lug nuts to avoid rotor damage
• Check compatibility with vehicle model and year prior to installation

Quality Assurance

Dynamite Friction manufactures the 830-31171L rotor to meet strict quality standards for fit, finish, and performance. The rust resistant coating and Geospec silver grey hat finish contribute to long-term durability. While no specific warranty information is provided, Dynamite Friction products are engineered to comply with OEM specifications for reliable braking performance on BMW and Toyota vehicles.