Raybestos 9278R Disc Brake Rotor - Front

Overview of Raybestos R-Line Disc Brake Rotor 9278R

The Raybestos R-Line 9278R disc brake rotor is engineered for reliable braking performance on Toyota Starlet vehicles. Designed as a solid, conventional rotor, it meets specific thickness and dimension requirements to ensure proper fit and function.

• Compatible with Toyota Starlet models
• Solid disc brake rotor with conventional design
• Outside diameter: 226.05 mm (8.9 inches)
• Nominal thickness: 10.0 mm (0.394 inches)
• Discard thickness: 9.1 mm (0.358 inches)
• Overall height: 31.0 mm (1.22 inches)
• Mounting bolt hole quantity: 4 with 84 mm diameter
• Center hole diameter: 64.0 mm (2.52 inches)

Detailed Specifications and Features

The Raybestos R-Line 9278R rotor is a solid type rotor designed for conventional mounting on Toyota Starlet vehicles. It features an outside diameter of 226.05 mm, providing the correct size for optimal braking surface contact. The nominal thickness of 10.0 mm ensures durability and heat dissipation, while the discard thickness of 9.1 mm indicates the minimum safe thickness before replacement is necessary. The rotor’s overall height is 31.0 mm, and it includes four mounting bolt holes with an 84 mm bolt circle diameter, matching the Starlet’s hub specifications. The center hole diameter of 64.0 mm allows for proper hub fitment, ensuring secure installation and alignment.

Raybestos R-Line Product Line Information

The R-Line by Raybestos is a product line focused on delivering reliable, OEM-quality brake components designed to meet or exceed factory specifications. This line emphasizes precise fitment and consistent performance, making it suitable for vehicles like the Toyota Starlet that require exact rotor dimensions and mounting configurations. The 9278R rotor exemplifies the R-Line’s commitment to quality and compatibility.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Toyota Starlet
• Restores proper braking performance and pedal feel
• Addresses rotor thickness below manufacturer discard limits
• Eliminates brake noise caused by uneven rotor surfaces
• Prevents brake pulsation due to rotor runout or damage

Installation Notes and Tips

• Verify rotor dimensions against vehicle specifications before installation
• Ensure mounting surfaces and hub are clean and free of debris
• Torque mounting bolts to manufacturer-recommended specifications
• Inspect brake pads for wear and replace if necessary during rotor installation
• Perform a proper bed-in procedure after installation for optimal braking

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet strict quality standards, ensuring consistent performance and durability. While specific warranty details for part number 9278R should be confirmed with the supplier, Raybestos typically offers limited warranties covering defects in materials and workmanship. This rotor is designed to provide reliable service when installed and maintained according to vehicle manufacturer guidelines.