Raybestos 6129R Disc Brake Rotor - Rear

Overview of Raybestos R-Line 6129R Disc Brake Rotor

The Raybestos R-Line 6129R disc brake rotor is engineered for reliable braking performance on select Ford, Mazda, and Mercury vehicles. Designed as a vented rotor, it offers effective heat dissipation to maintain consistent stopping power under various driving conditions.

• Vented disc brake rotor for improved heat management
• Overall diameter of 9.870 inches (250.7 mm)
• Nominal thickness of 0.355 inches (9.0 mm) with discard thickness at 0.315 inches (8.0 mm)
• Four mounting bolt holes with a 3.937 inch (100 mm) bolt circle diameter
• Center hole diameter of 2.167 inches (55.05 mm)
• Conventional rotor type compatible with drum-in-hat setups

Detailed Product Description and Specifications

The Raybestos R-Line 6129R rotor features a vented design that enhances cooling efficiency, reducing the risk of brake fade during extended use. With an outside diameter of 250.7 mm (9.870 inches) and an overall height of 34.3 mm (1.350 inches), this rotor is engineered to meet the precise fitment requirements of vehicles such as the Ford Escort, Mazda Miata, and Mercury Tracer. The nominal thickness of 9.0 mm (0.355 inches) ensures durability, while the discard thickness of 8.0 mm (0.315 inches) indicates when replacement is necessary to maintain safe braking performance. The rotor includes four mounting bolt holes arranged on a 100 mm (3.937 inch) bolt circle diameter, compatible with the specified vehicle models.

Raybestos R-Line Product Line Information

The R-Line by Raybestos is a product line focused on delivering dependable brake components that meet original equipment specifications. This line emphasizes quality materials and precise manufacturing tolerances, making the 6129R rotor a suitable replacement part for maintaining factory-level braking performance on compatible Ford, Mazda, and Mercury vehicles.

Applications and Common Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Upgrading from solid to vented rotors for better heat dissipation
• Resolving brake noise due to uneven rotor surfaces
• Addressing reduced braking efficiency from rotor thickness below discard limits
• Ensuring proper fitment on Ford Escort, Mazda Miata, and Mercury Tracer models

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets nominal specifications
• Clean mounting surfaces to prevent rotor runout and vibration
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and hardware during rotor replacement for optimal system performance
• Use proper tools to avoid damage to the rotor or mounting components

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM standards, ensuring consistent performance and durability. While specific warranty details for part number 6129R should be confirmed with the supplier, Raybestos typically offers coverage against defects in materials and workmanship to support long-term reliability.