Dynamite Friction 830-31046R Disc Brake Rotor - Front Right

Overview of Dynamite Friction DFC Geoperformance Rotor

The Dynamite Friction DFC Geoperformance Rotor - Drilled and Slotted (part number 830-31046R) is engineered for BMW models including the 323i, 325Ci, 325i, 325xi, 328Ci, 328i, Z3, and Z4. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 323i, 325Ci, 325i, 325xi, 328Ci, 328i, Z3, and Z4
• Part number 830-31046R
• Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 22 mm; discard thickness: 20.4 mm
• Overall diameter: 300 mm; height: 51.5 mm
• Directional braking surface for optimized performance
• Rust resistant coating with Geospec silver grey hat finish
• 5 bolt holes with 14.6 mm diameter and 120 mm bolt circle diameter

Detailed Product Features and Specifications

The DFC Geoperformance Rotor - Drilled and Slotted is designed to meet the specific braking needs of select BMW vehicles. Its vented design improves airflow to reduce heat buildup during braking, which helps maintain consistent stopping power. The rotor’s surface is both drilled and slotted, allowing for efficient removal of brake dust, gases, and water, which can improve pad bite and reduce brake fade under demanding conditions.

With a nominal thickness of 22 mm and a discard thickness of 20.4 mm, this rotor provides a durable braking surface that meets OEM specifications. The rotor’s overall diameter is 300 mm, and it features a 51.5 mm height, ensuring proper fitment and clearance. The hat section is finished in Geospec silver grey, adding corrosion resistance along with a rust resistant coating applied to the entire rotor.

About the DFC Geoperformance Rotor - Drilled and Slotted Line

The DFC Geoperformance Rotor - Drilled and Slotted product line focuses on delivering rotors with enhanced heat dissipation and improved braking response. The combination of drilled holes and precision slots is engineered to optimize brake pad contact and reduce the risk of glazing. This rotor line is suitable for drivers seeking reliable performance on BMW models that require vented rotors with directional braking surfaces.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 3 Series and Z models
• Improves heat dissipation to reduce brake fade during aggressive driving
• Helps maintain consistent braking performance in wet or dusty conditions
• Reduces brake dust buildup for cleaner rotor and pad surfaces
• Addresses rotor corrosion with rust resistant coating and durable finish

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 20.4 mm before installation. The rotor features a 5-lug bolt pattern with 14.6 mm diameter holes and a 120 mm bolt circle diameter, compatible with specified BMW models. Proper torque specifications should be followed when mounting the rotor to avoid warping. It is recommended to inspect brake pads and hardware during rotor replacement for optimal braking system performance.

Quality Assurance

Dynamite Friction rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The rust resistant coating and Geospec silver grey hat finish provide added protection against corrosion. While no specific warranty information is provided, the product is designed for durability and consistent braking performance on compatible BMW vehicles.