OE Quality
60-Day Returns

Dynamite Friction 631-80031R Disc Brake Rotor - Front Right
Overview of Dynamite Friction DFC Brake Rotor
The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-80031R) is engineered for Mazda RX-7 models requiring reliable braking performance. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance heat dissipation and maintain consistent stopping power under demanding conditions.
- Compatible with Mazda RX-7 vehicles
- Directional slotted and drilled surface for improved brake cooling
- Vented rotor design to reduce heat buildup
- Zinc silver hat finish with rust-resistant coating
- 5 bolt holes with 114.3 mm bolt circle diameter
- Nominal thickness of 22 mm and discard thickness of 20 mm
- Outside diameter of 294 mm and overall height of 67 mm
Product Line Details: DFC Brake Rotor - Drilled and Slotted - Silver
The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and precision slots to optimize brake pad contact and gas evacuation. This product line is designed to provide enhanced braking performance and durability, particularly for vehicles like the Mazda RX-7 that demand consistent stopping power. The silver zinc coating on the rotor hat offers corrosion resistance, extending the rotor's service life.
Technical Specifications and Features
This disc brake rotor is vented to allow air circulation between the rotor surfaces, which helps dissipate heat generated during braking. The rotor's surface is both drilled and slotted, which aids in removing brake dust, gases, and water from the contact area, improving braking efficiency and reducing the risk of brake fade. The rotor has a nominal thickness of 22 mm and a discard thickness of 20 mm, indicating when replacement is necessary to maintain safe braking performance.
The rotor's hat is finished with a zinc silver coating that provides rust resistance, an important feature for maintaining rotor integrity over time. It features five bolt holes with a bolt circle diameter of 114.3 mm, matching the Mazda RX-7's specifications. The overall height and height of the rotor are both 67 mm, with a center hole diameter of 72 mm and stud/lug hole diameter of 13 mm.
Applications and Problem Solving
- Replaces worn or warped brake rotors on Mazda RX-7 models
- Addresses brake fade caused by excessive heat buildup
- Improves braking response in wet or dusty conditions
- Reduces brake noise and vibration through slotted and drilled design
- Prevents rust and corrosion on rotor hats for longer service life
Installation Notes and Tips
Ensure the rotor thickness is above the discard thickness of 20 mm before installation. Clean the rotor surface to remove any protective coatings or debris before mounting. Verify bolt hole alignment with the Mazda RX-7 hub using the 5-bolt pattern and 114.3 mm bolt circle diameter. Proper torque specifications should be followed to avoid rotor warping. It is recommended to replace brake pads when installing new rotors to ensure optimal braking performance.
Quality Assurance
Dynamite Friction manufactures this rotor to meet or exceed OEM specifications for fit and function on Mazda RX-7 vehicles. The rust-resistant zinc silver coating on the rotor hat helps maintain durability in various driving conditions. While no specific warranty information is provided, the rotor's design and materials support reliable braking performance when installed and maintained properly.
| Brand | Dynamite Friction |
|---|---|
| Part Number | 631-80031R |
| Position | DFC Brake Rotor - Drilled and Slotted - Silver, Front Right |
| Discard Thickness | 20 |
| Nominal Thickness | 22 |
| Disc Finish | Plain |
| Hat Finish | Zinc silver |
| Rust Resistant Coating | Yes |
| Bolt Hole Quantity | 5 |
| Overall Height | 67 |
| Outside Diameter | 294 |
| Height | 67 |
| Surface Type | Slotted x drilled |
| Solid Or Vented Type Rotor | Vented |
| Center Hole Diameter | 72 |
| Stud/Lug Hole Quantity | 5 |
| Stud/Lug Hole Diameter | 13 |
| Directional or Non-Directional Brake Surface | Directional |
| Bolt Circle Diameter | 114.3 |
| Stud/Lug Hole Circle Diameter | 114.3 |
This part fits 3 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1995 | Mazda | RX-7 | Front Right | DFC Brake Rotor - Drilled and Slotted - Silver |
| 1994 | Mazda | RX-7 | Front Right | DFC Brake Rotor - Drilled and Slotted - Silver |
| 1993 | Mazda | RX-7 | Front Right | DFC Brake Rotor - Drilled and Slotted - Silver |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.