Centric 121.45089 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.45089

The Centric C-TEK Standard Disc Brake Rotor 121.45089 is engineered for reliable braking performance on Mazda CX-3 vehicles. Designed as a solid, smooth-surface rotor, it meets precise specifications to ensure consistent stopping power and durability.

• Compatible with Mazda CX-3 models
• Part number: 121.45089
• Solid disc brake rotor with smooth surface
• Outside diameter: 11.063 inches (281 mm)
• Nominal thickness: 0.374 inches (9.5 mm)
• Discard thickness: 0.295 inches (7.5 mm)
• Overall height: 1.409 inches (35.8 mm)
• Floating disc mounting design
• 5 lug holes with 0.524 inch (13.3 mm) diameter
• Mounting bolt hole circle diameter: 4.5 inches (114.3 mm)
• Center hole diameter: 2.677 inches (68 mm)
• Weight approximately 9.15 lbs (4.16 kg)
• ABS tone ring not included
• Bearings not included

Product Line Details: C-TEK Standard Disc Brake Rotors

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors designed to meet or exceed OEM specifications for standard braking applications. This product line focuses on providing solid rotors with smooth surfaces, suitable for everyday driving conditions. The 121.45089 rotor fits within this line, delivering consistent performance and durability for Mazda CX-3 vehicles without additional features like venting or ABS tone rings.

Technical Description and Specifications

This Centric disc brake rotor features a solid construction with a smooth surface type, optimized for standard braking systems. The rotor measures 11.063 inches (281 mm) in outside diameter and has a nominal thickness of 0.374 inches (9.5 mm), with a discard thickness of 0.295 inches (7.5 mm), indicating when replacement is necessary. The overall height is 1.409 inches (35.8 mm), and it uses a floating disc mounting design to accommodate thermal expansion and reduce stress. The rotor includes five lug holes sized at 0.524 inches (13.3 mm) diameter, arranged on a 4.5-inch (114.3 mm) bolt circle diameter, and a center hole diameter of 2.677 inches (68 mm). This rotor does not include an ABS tone ring or bearings, so those components must be sourced separately if required.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Mazda CX-3
• Addresses brake pulsation and vibration issues
• Restores proper rotor thickness for safe braking
• Eliminates noise caused by uneven rotor surfaces
• Improves braking consistency and pedal feel

Installation Notes and Tips

• Ensure rotor discard thickness is not exceeded before installation
• Clean rotor surface to remove any protective coatings or debris
• Verify compatibility with Mazda CX-3 brake calipers and hardware
• Torque lug nuts to manufacturer specifications
• Check for proper rotor alignment and secure mounting

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details for part number 121.45089 should be confirmed with the supplier, Centric generally offers coverage against defects in materials and workmanship. Proper installation and maintenance are essential to ensure optimal rotor performance and longevity.