OE Quality
60-Day Returns

Dynamite Friction 631-54138R Disc Brake Rotor - Front Right
Overview of DFC Brake Rotor - Drilled and Slotted - Silver
The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver is engineered for reliable braking performance on Ford and Mazda trucks. Designed specifically for models like the Ford Ranger and Mazda B-series trucks, this rotor offers enhanced heat dissipation and consistent stopping power.
- Part Number: 631-54138R
- Disc Type: Vented, drilled and slotted surface
- Nominal Thickness: 26.1 mm with a discard thickness of 24.5 mm
- Rust-resistant zinc silver hat finish
- 5 bolt holes with 1/2-20 diameter and 114.3 mm bolt circle diameter
- Directional brake surface for optimized performance
- Outside diameter of 261 mm and overall height of 108 mm
Product Line Details
The DFC Brake Rotor - Drilled and Slotted - Silver line from Dynamite Friction focuses on rotors that combine drilled holes and slots to improve brake pad bite and reduce heat buildup. This design helps maintain braking efficiency under demanding conditions, making it suitable for trucks like the Ford Ranger and Mazda B2300, B3000, and B4000 models. The silver zinc coating on the rotor hat provides corrosion resistance, extending the rotor's service life.
Technical Specifications and Features
This disc brake rotor features a vented design that promotes airflow to dissipate heat effectively during braking. The drilled and slotted surface enhances pad cleaning and gas evacuation, reducing brake fade. With a nominal thickness of 26.1 mm and a discard thickness of 24.5 mm, the rotor maintains structural integrity and safety standards. The rotor's 5-lug bolt pattern with a 114.3 mm bolt circle diameter ensures compatibility with specified Ford and Mazda trucks. The zinc silver hat finish adds rust resistance, protecting the rotor from corrosion over time.
Applications and Problem Solving
- Compatible with Ford Ranger and Mazda B2300, B3000, B4000 models
- Addresses brake fade caused by excessive heat buildup
- Improves braking response with directional drilled and slotted surface
- Reduces rust and corrosion on rotor hats for longer durability
- Maintains braking performance under heavy load or towing conditions
Installation Notes and Tips
Ensure the rotor thickness is above the discard thickness of 24.5 mm before installation. Clean the rotor surface to remove any protective coating or debris. Verify the 5-lug bolt pattern and 114.3 mm bolt circle diameter match your vehicle specifications. Properly torque lug nuts to manufacturer specifications to avoid rotor warping. Directional rotors should be installed following the indicated rotation direction for optimal performance.
Quality Assurance
Dynamite Friction manufactures the 631-54138R rotor to meet or exceed OEM standards for fit and function. The rust-resistant coating and vented design contribute to the rotor's durability and consistent braking performance. Warranty information is available through the manufacturer and should be consulted for specific coverage details.
| Brand | Dynamite Friction |
|---|---|
| Part Number | 631-54138R |
| Position | DFC Brake Rotor - Drilled and Slotted - Silver, Front Right |
| Discard Thickness | 24.5 |
| Nominal Thickness | 26.1 |
| Bolt Hole Diameter | 1/2-20 |
| Disc Finish | Plain |
| Hat Finish | Zinc silver |
| Rust Resistant Coating | Yes |
| Bolt Hole Quantity | 5 |
| Overall Height | 108 |
| Outside Diameter | 261 |
| Height | 108 |
| Surface Type | Slotted x drilled |
| Solid Or Vented Type Rotor | Vented |
| Center Hole Diameter | 63.7 |
| Stud/Lug Hole Quantity | 5 |
| Directional or Non-Directional Brake Surface | Directional |
| Bolt Circle Diameter | 114.3 |
| Stud/Lug Hole Circle Diameter | 114.3 |
This part fits 24 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 1997 | Ford | Ranger | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1997 | Ford | Ranger | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1997 | Mazda | B2300 | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver | |
| 1997 | Mazda | B2300 | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver | |
| 1997 | Mazda | B3000 | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1997 | Mazda | B3000 | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1997 | Mazda | B4000 | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1997 | Mazda | B4000 | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1996 | Ford | Ranger | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1996 | Ford | Ranger | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1996 | Mazda | B2300 | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1996 | Mazda | B2300 | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1996 | Mazda | B3000 | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1996 | Mazda | B3000 | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1996 | Mazda | B4000 | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1996 | Mazda | B4000 | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | Ford | Ranger | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | Ford | Ranger | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | Mazda | B2300 | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | Mazda | B2300 | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | Mazda | B3000 | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | Mazda | B3000 | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | Mazda | B4000 | RWD | Front Right | Rear brake drum with 10 inch diameter; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | Mazda | B4000 | RWD | Front Right | 9 inch Rear Drums; DFC Brake Rotor - Drilled and Slotted - Silver |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.