OE Quality
60-Day Returns

Raybestos 681954R Disc Brake Rotor - Front
Overview of Raybestos R-Line Disc Brake Rotor 681954R
The Raybestos R-Line Disc Brake Rotor 681954R is engineered for reliable braking performance on Ford Mustang models. Designed as a vented, conventional rotor, it offers consistent heat dissipation and durability for everyday driving conditions.
- Compatible with Ford Mustang vehicles
- Vented disc brake rotor design for improved cooling
- Overall height: 2.520 inches (64.000 mm)
- Outside diameter: 14.961 inches (380.000 mm)
- Inside diameter: 9.528 inches (242.000 mm)
- Mounting bolt hole quantity: 5 with 0.622 inch (15.800 mm) diameter holes
- Smooth surface type for consistent pad contact
- Nominal thickness: 1.339 inches (34.000 mm), discard thickness: 1.244 inches (31.600 mm)
Raybestos R-Line Product Line Details
The R-Line by Raybestos focuses on delivering dependable brake components that meet or exceed OEM specifications. This product line emphasizes quality materials and precise manufacturing to ensure consistent rotor performance and longevity. The 681954R rotor exemplifies these standards with its vented design and exacting dimensional tolerances.
Technical Specifications and Features
This disc brake rotor features a vented construction that enhances heat dissipation during braking, reducing the risk of brake fade. The smooth surface finish ensures even pad wear and reliable stopping power. With a 5-bolt mounting pattern and a mounting bolt hole circle diameter of 4.500 inches (114.300 mm), it is designed to fit securely on compatible Ford Mustang models. The rotor’s nominal thickness of 1.339 inches (34.000 mm) and discard thickness of 1.244 inches (31.600 mm) provide clear service limits for maintenance.
Applications and Problem Solving
- Replacement for worn or warped rotors on Ford Mustang vehicles
- Addresses brake noise and vibration issues caused by uneven rotor surfaces
- Improves heat management to reduce brake fade during extended use
- Restores proper braking performance and pedal feel
- Compatible with conventional drum-in-hat brake systems
Installation Notes and Tips
Ensure the rotor surface is clean and free of debris before installation. Verify the mounting bolt hole pattern and diameter match the vehicle specifications. It is recommended to replace brake pads simultaneously to maintain optimal braking performance. Check rotor thickness regularly and replace when below the discard thickness of 1.244 inches (31.600 mm).
Quality Assurance and Warranty
Raybestos R-Line rotors are manufactured to meet strict quality standards, ensuring consistent performance and durability. While specific warranty details are not provided here, Raybestos products typically come with a limited warranty against defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.
| Brand | Raybestos |
|---|---|
| Part Number | 681954R |
| Position | Raybestos R-Line, Front |
| Discard Thickness | 1.244 |
| Discard Thickness | 31.600 |
| Nominal Thickness | 1.339 |
| Nominal Thickness | 34.000 |
| Inside Diameter | 242.000 |
| Inside Diameter | 9.528 |
| Overall Height | 2.520 |
| Overall Height | 64.000 |
| Outside Diameter | 14.961 |
| Outside Diameter | 380.000 |
| Mounting Bolt Hole Quantity | 5 |
| Surface Type | Smooth |
| Solid Or Vented Type Rotor | Vented |
| Center Hole Diameter | 2.795 |
| Center Hole Diameter | 71.000 |
| Mounting Bolt Hole Circle Diameter | 114.300 |
| Mounting Bolt Hole Circle Diameter | 4.500 |
| Mounting Bolt Hole Diameter | 0.622 |
| Mounting Bolt Hole Diameter | 15.800 |
| Stud/Lug Hole Quantity | 5 |
| Conventional Or Drum-In-Hat Type Rotor | Conventional |
This part fits 10 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2023 | Ford | Mustang | 2.3L | L4 | Front | 6 Piston Caliper; Raybestos R-Line |
| 2022 | Ford | Mustang | 2.3L | L4 | Front | 6 Piston Caliper; Raybestos R-Line |
| 2021 | Ford | Mustang | 5.0L | V8 | Front | 6 piston calipers; R-Line |
| 2021 | Ford | Mustang | 2.3L | L4 | Front | 6 piston calipers; R-Line |
| 2020 | Ford | Mustang | 5.0L | V8 | Front | 6 piston calipers; R-Line |
| 2019 | Ford | Mustang | 5.0L | V8 | Front | w/ Brembo Package; R-Line |
| 2018 | Ford | Mustang | 5.0L | V8 | Front | Compatible with vehicles equipped with Brembo brakes.; R-Line |
| 2017 | Ford | Mustang | 5.0L | V8 | Front | Compatible with vehicles equipped with Brembo brakes.; R-Line |
| 2016 | Ford | Mustang | 5.0L | V8 | Front | Compatible with vehicles equipped with Brembo brakes.; R-Line |
| 2015 | Ford | Mustang | 5.0L | V8 | Front | Compatible with vehicles equipped with Brembo brakes.; R-Line |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.