Dynamite Friction 631-80074L Disc Brake Rotor - Front Left

Overview of the DFC Brake Rotor - Drilled and Slotted - Silver

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-80074L) is engineered for reliable braking performance on Fiat 124 Spider and Mazda MX-5 Miata models. This vented disc brake rotor features a directional, slotted, and drilled surface designed to enhance heat dissipation and maintain consistent stopping power.

• Compatible with Fiat 124 Spider and Mazda MX-5 Miata
• Part number: 631-80074L
• Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 22 mm; discard thickness: 20 mm
• Overall height: 44.2 mm; outside diameter: 280 mm
• Rust-resistant zinc silver hat finish with plain disc finish
• Directional brake surface for optimized performance
• 4 bolt holes with 100 mm bolt circle diameter

Product Line Details: DFC Brake Rotor - Drilled and Slotted - Silver

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction offers rotors designed with enhanced cooling and braking efficiency in mind. The drilled and slotted surface pattern helps reduce brake fade by allowing gases and debris to escape, while the vented rotor design improves airflow to maintain optimal operating temperatures. The zinc silver coating on the rotor hat provides corrosion resistance, extending the rotor's service life under various driving conditions.

Technical Specifications and Features

This disc brake rotor is vented to improve heat dissipation during braking, which helps maintain consistent brake performance. The rotor’s nominal thickness is 22 mm, with a discard thickness of 20 mm, indicating when replacement is necessary to ensure safety. The rotor measures 280 mm in outside diameter and 44.2 mm in overall height, fitting precisely on compatible Fiat 124 Spider and Mazda MX-5 Miata vehicles. The rotor surface is both drilled and slotted in a directional pattern, which aids in removing brake dust and water, improving braking response in various conditions.

Applications and Problem Solving

• Reduces brake fade during aggressive or prolonged braking
• Improves heat dissipation to prevent rotor warping
• Helps maintain consistent braking performance in wet conditions
• Minimizes brake dust buildup for cleaner rotor surface
• Provides corrosion resistance to extend rotor lifespan

Installation Notes and Tips

Ensure the rotor is installed with the directional surface pattern oriented correctly according to the vehicle’s rotation direction. Verify that the rotor thickness is above the discard thickness of 20 mm before installation. Use the 4 bolt holes with a 100 mm bolt circle diameter to secure the rotor properly. It is recommended to inspect brake pads and hardware during installation to maintain overall braking system integrity.

Quality Assurance

Dynamite Friction manufactures the 631-80074L rotor with rust-resistant coatings and precise machining to meet OEM specifications for Fiat 124 Spider and Mazda MX-5 Miata models. While no specific warranty information is provided, the rotor’s design and materials support durability and consistent performance under normal operating conditions.