OE Quality
60-Day Returns

Dynamite Friction 631-48021R Disc Brake Rotor - Front Right
Overview of Dynamite Friction DFC Brake Rotor
The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver is engineered for reliable braking performance on Chevrolet G30 vehicles. Designed with precision, this vented disc brake rotor offers enhanced heat dissipation and improved stopping power for demanding driving conditions.
- Part Number: 631-48021R
- Compatible with Chevrolet G30 models
- Vented disc brake rotor with drilled and slotted surface
- Nominal thickness: 32.7 mm; Discard thickness: 30.86 mm
- Overall diameter: 317.5 mm; Height: 120.7 mm
- Directional brake surface for optimized performance
- Rust-resistant zinc silver hat finish with plain disc finish
- Eight bolt holes with 9/16-18 diameter and 165.1 mm bolt circle diameter
Product Line Details: DFC Brake Rotor - Drilled and Slotted - Silver
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 heat dissipation. This design helps reduce brake fade and maintain consistent braking performance. The silver zinc coating on the rotor hat provides corrosion resistance, extending the rotor's service life, especially in environments prone to rust.
Technical Specifications and Features
This disc brake rotor features a vented design that allows air to flow between the rotor surfaces, enhancing cooling 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. The directional surface ensures the rotor is installed correctly for optimal performance. With eight bolt holes sized at 9/16-18 and a bolt circle diameter of 165.1 mm, it fits securely on the Chevrolet G30 hub with a center hole diameter of 118.5 mm.
Applications and Problem Solving
- Replacement rotor for worn or warped brake rotors on Chevrolet G30
- Improves heat dissipation to reduce brake fade during heavy braking
- Helps maintain consistent braking performance in wet or dusty conditions
- Addresses rotor corrosion issues with rust-resistant zinc silver coating
- Enhances brake pad bite and reduces brake noise with drilled and slotted design
Installation Notes and Tips
Ensure the rotor is installed with the directional surface facing the correct rotation direction as indicated. Verify bolt hole alignment with the Chevrolet G30 hub using the 8-bolt pattern and 165.1 mm bolt circle diameter. Check rotor thickness before installation; replace if below the discard thickness of 30.86 mm. Clean the rotor surface to remove any protective coating before mounting brake pads.
Quality Assurance
Dynamite Friction manufactures this rotor to meet OEM specifications for fit and function on Chevrolet G30 vehicles. The rust-resistant zinc silver finish helps extend rotor life by preventing corrosion. While no specific warranty information is provided, the rotor is designed for durability and consistent braking performance under normal operating conditions.
| Brand | Dynamite Friction |
|---|---|
| Part Number | 631-48021R |
| Position | DFC Brake Rotor - Drilled and Slotted - Silver, Front Right |
| Discard Thickness | 30.86 |
| Nominal Thickness | 32.7 |
| Bolt Hole Diameter | 9/16-18 |
| Disc Finish | Plain |
| Hat Finish | Zinc silver |
| Rust Resistant Coating | Yes |
| Bolt Hole Quantity | 8 |
| Overall Height | 120.7 |
| Outside Diameter | 317.5 |
| Height | 120.7 |
| Surface Type | Slotted x drilled |
| Solid Or Vented Type Rotor | Vented |
| Center Hole Diameter | 118.5 |
| Stud/Lug Hole Quantity | 8 |
| Directional or Non-Directional Brake Surface | Directional |
| Bolt Circle Diameter | 165.1 |
| Stud/Lug Hole Circle Diameter | 165.1 |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1995 | Chevrolet | G30 | Front Right | Single Rear Wheels; 13 x 2-1/2 inch Rear Shoes; Semi-Floating Axle - Brake Drum fitment; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | Chevrolet | G30 | Front Right | Single Rear Wheels; 13 x 2-1/2 inch Rear Shoes; Floating Axle; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | GMC | G3500 | Front Right | Single Rear Wheels; Rear Shoes: 13 x 2-1/2 inch; Full Floating Axle; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1995 | GMC | G3500 | Front Right | Single Rear Wheels; 13 x 2-1/2 inch Rear Shoes; Semi-Floating Axle - Brake Drum fitment; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1994 | Chevrolet | G30 | Front Right | Single Rear Wheels; 13 x 2-1/2 inch Rear Shoes; Semi-Floating Axle - Brake Drum fitment; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1994 | Chevrolet | G30 | Front Right | Single Rear Wheels; 13 x 2-1/2 inch Rear Shoes; Floating Axle; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1994 | GMC | G3500 | Front Right | Single Rear Wheels; Rear Shoes: 13 x 2-1/2 inch; Full Floating Axle; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1994 | GMC | G3500 | Front Right | Single Rear Wheels; 13 x 2-1/2 inch Rear Shoes; Semi-Floating Axle - Brake Drum fitment; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1993 | Chevrolet | G30 | Front Right | Single Rear Wheels; 13 x 2-1/2 inch Rear Shoes; Semi-Floating Axle - Brake Drum fitment; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1993 | Chevrolet | G30 | Front Right | Single Rear Wheels; 13 x 2-1/2 inch Rear Shoes; Floating Axle; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1993 | GMC | G3500 | Front Right | Single Rear Wheels; Rear Shoes: 13 x 2-1/2 inch; Full Floating Axle; DFC Brake Rotor - Drilled and Slotted - Silver |
| 1993 | GMC | G3500 | Front Right | Single Rear Wheels; 13 x 2-1/2 inch Rear Shoes; Semi-Floating Axle - Brake Drum fitment; DFC Brake Rotor - Drilled and Slotted - Silver |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.