Centric 120.45091 Disc Brake Rotor - Rear

Overview of Centric Premium Disc Brake Rotor 120.45091

The Centric Premium Disc Brake Rotor 120.45091 is engineered for reliable braking performance on Mazda CX-9 vehicles. Designed as a solid, smooth-surface rotor, it meets precise specifications to maintain consistent stopping power and durability.

• Compatible with Mazda CX-9 models
• Part number: 120.45091
• Solid disc brake rotor with smooth surface finish
• Coated hat finish for corrosion resistance
• 5 bolt holes with 114.3 mm bolt circle diameter
• Nominal thickness of 11.0 mm and discard thickness of 9.0 mm
• Outside diameter of 324.9 mm (12.791 inches)
• Overall height of 45.1 mm (1.776 inches)
• Floating disc mounting design

Product Line Details: Centric Premium Disc Brake Rotors

The Centric Premium Disc Brake Rotors line focuses on delivering rotors that meet or exceed OEM specifications for fit, form, and function. This product line emphasizes precision manufacturing and quality materials, providing a solid rotor design with a smooth braking surface and a coated hat finish to resist corrosion. The 120.45091 rotor is part of this line, offering a reliable replacement option for Mazda CX-9 owners seeking consistent braking performance.

Technical Specifications and Features

This disc brake rotor features a nominal thickness of 11.0 mm and a discard thickness of 9.0 mm, ensuring it can be resurfaced within safe limits before replacement is necessary. The rotor's outside diameter measures 324.9 mm (12.791 inches), with an overall height of 45.1 mm (1.776 inches). It includes 5 bolt holes arranged on a 114.3 mm bolt circle diameter, compatible with the Mazda CX-9 hub specifications. The hat finish is coated to provide corrosion resistance, and the rotor uses a floating disc mounting design to accommodate thermal expansion and reduce stress.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Mazda CX-9
• Addresses brake pulsation caused by uneven rotor surfaces
• Resolves noise issues related to rotor surface imperfections
• Improves braking consistency and pedal feel
• Prevents corrosion-related rotor degradation

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it meets the nominal thickness of 11.0 mm and is above the discard thickness of 9.0 mm. Clean the rotor surface and hub mounting area to remove rust or debris for proper fitment. Use the correct torque specifications for the 5 mounting bolts on the 114.3 mm bolt circle diameter. Since this rotor does not include bearings or an ABS tone ring, verify compatibility with your vehicle’s existing components. Proper bedding-in of the new rotor and brake pads is recommended to optimize braking performance.

Quality Assurance and Warranty

Centric Premium Disc Brake Rotors are manufactured to meet strict quality standards, ensuring durability and reliable performance. While specific warranty details for part number 120.45091 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. It is recommended to consult the product documentation or manufacturer for exact warranty terms.