Dynamite Friction 830-31067R Disc Brake Rotor - Front Right

Overview of Dynamite Friction DFC Geoperformance Rotor

The Dynamite Friction DFC Geoperformance Rotor - Drilled and Slotted (part number 830-31067R) is engineered for BMW models including the 120i, 125i, 128i, 323i, 325i, 325xi, 328i, and 328xi. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 120i, 125i, 128i, 323i, 325i, 325xi, 328i, 328xi
• Part Number: 830-31067R
• Disc Finish: Plain with Geospec silver grey hat finish
• Rust resistant coating for extended durability
• Vented rotor design with slotted and drilled surface
• Directional brake surface for optimized performance
• Dimensions: 300mm outside diameter, 24mm nominal thickness, 22.4mm discard thickness
• 5 bolt holes with 14.7mm diameter and 120mm bolt circle diameter

Detailed Product Description

The DFC Geoperformance Rotor - Drilled and Slotted by Dynamite Friction is a vented disc brake rotor designed to improve braking efficiency and thermal management. The rotor measures 300mm in outside diameter with a nominal thickness of 24mm and a discard thickness of 22.4mm, ensuring reliable service life and replacement intervals. The rotor’s surface features a combination of drilled holes and slots arranged directionally to aid in heat dissipation, reduce brake fade, and help evacuate water and debris from the braking surface.

The rotor’s hat is finished in Geospec silver grey, providing corrosion resistance along with a rust resistant coating applied to the entire rotor. This helps maintain structural integrity and appearance over time. The rotor is designed with 5 bolt holes, each 14.7mm in diameter, spaced on a 120mm bolt circle diameter, matching the stud/lug hole pattern of compatible BMW models.

DFC Geoperformance Rotor - Drilled and Slotted Product Line

The DFC Geoperformance Rotor - Drilled and Slotted line focuses on delivering rotors with enhanced surface treatments and vented designs to improve braking performance under demanding conditions. This product line combines drilled holes and directional slots to optimize heat dissipation and maintain consistent braking response. The Geospec silver grey hat finish and rust resistant coating contribute to rotor longevity, making it suitable for BMW vehicles requiring reliable and durable braking components.

Applications and Problem Solving

• Reduces brake fade during aggressive or repeated braking
• Improves heat dissipation to prevent rotor warping
• Helps evacuate water and debris for consistent braking in wet conditions
• Maintains structural integrity with rust resistant coating
• Compatible with specific BMW 3 Series and 1 Series models for direct replacement

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (22.4mm) before installation
• Verify bolt hole pattern matches vehicle specifications (5 holes, 14.7mm diameter, 120mm bolt circle)
• Clean rotor surface before installation to remove any protective coatings or residues
• Use proper torque specifications for lug nuts to avoid rotor damage
• Inspect brake pads and calipers during rotor replacement for optimal performance

Quality Assurance

Dynamite Friction manufactures the 830-31067R rotor to meet OEM specifications for fitment and performance on BMW 120i, 125i, 128i, 323i, 325i, 325xi, 328i, and 328xi models. The rotor includes a rust resistant coating and is constructed with vented design and directional surface features to ensure durability and consistent braking. Warranty information is available through Dynamite Friction and should be confirmed at the time of purchase.