Raybestos 981421R Disc Brake Rotor - Front

Overview of Raybestos R-Line Disc Brake Rotor 981421R

The Raybestos R-Line Disc Brake Rotor 981421R is engineered for reliable braking performance on select Mazda vehicles. Designed specifically for Mazda 3, Mazda 3 Sport, and Mazda CX-3 models, this vented rotor meets precise specifications to maintain optimal stopping power and durability.

• Compatible with Mazda 3, Mazda 3 Sport, and Mazda CX-3
• Vented disc brake rotor for improved heat dissipation
• Overall height: 2.646 inches (67.2 mm)
• Outside diameter: 11.591 inches (294.4 mm)
• Mounting bolt hole quantity: 5 with 4.5 inch (114.3 mm) bolt circle diameter
• Nominal thickness: 0.980 inches (24.9 mm)
• Discard thickness: 0.910 inches (23.1 mm)
• Conventional rotor type (not drum-in-hat)

Detailed Product Description

The Raybestos R-Line 981421R disc brake rotor is a vented rotor designed to provide consistent braking performance and heat management for Mazda 3, Mazda 3 Sport, and Mazda CX-3 vehicles. With an outside diameter of 11.591 inches and a nominal thickness of 0.980 inches, this rotor fits precisely to ensure proper brake pad contact and rotor longevity. The vented design helps dissipate heat generated during braking, reducing the risk of brake fade under normal driving conditions. Featuring five mounting bolt holes arranged on a 4.5 inch bolt circle diameter, this rotor is engineered for straightforward installation on compatible Mazda models. The discard thickness of 0.910 inches indicates the minimum safe thickness before replacement is necessary, helping maintain braking safety and performance.

About the Raybestos R-Line Product Line

The R-Line by Raybestos is a product line focused on delivering reliable, OEM-quality brake components designed to meet or exceed factory specifications. The R-Line rotors, including the 981421R, are manufactured with attention to fitment accuracy and material quality, making them suitable for drivers seeking dependable replacement parts for their vehicles. This line balances performance and durability without introducing aftermarket modifications, ensuring compatibility with the original braking system of Mazda vehicles.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Restores braking efficiency lost due to rotor thickness below discard limits
• Addresses excessive brake noise related to rotor surface irregularities
• Improves heat dissipation to reduce brake fade during extended use
• Corrects fitment issues with non-compatible or damaged rotors

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness of 0.910 inches
• Clean mounting surface and hub to prevent rotor runout
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to ensure even rotor wear
• Perform a bed-in procedure after installation to optimize braking performance

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet strict quality standards for fit, form, and function. While specific warranty details for part number 981421R may vary, Raybestos typically offers limited warranties covering defects in materials and workmanship. It is recommended to consult product documentation or authorized sources for exact warranty terms related to this disc brake rotor.