Centric 121.45045 Disc Brake Rotor - Front

Overview of Centric C-TEK Standard Disc Brake Rotor 121.45045

The Centric C-TEK Standard Disc Brake Rotor 121.45045 is engineered for reliable braking performance on select Mazda vehicles. Designed specifically for Mazda 626, 929, and Protege models, this vented disc brake rotor offers consistent stopping power and durability.

• Compatible with Mazda 626, 929, and Protege
• Part number 121.45045 for precise identification
• Vented rotor design for improved heat dissipation
• Overall diameter of 10.776 inches (273.7 mm)
• Nominal thickness of 0.945 inches (24.0 mm) with discard thickness at 0.866 inches (22.0 mm)
• Floating disc mounting with straight vane style for efficient cooling
• 5 lug holes with 0.512 inch (13.0 mm) diameter and 4.5 inch (114.3 mm) bolt circle diameter
• Center hole diameter of 2.839 inches (72.1 mm)
• Weight approximately 13.5 lbs (6.14 kgs)
• Smooth surface type without ABS tone ring included

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers a balance of quality and value for everyday driving conditions. These rotors are designed to meet or exceed OEM specifications, providing consistent braking performance and durability. The 121.45045 rotor is part of this line, featuring a vented design that helps reduce heat buildup and maintain braking efficiency on Mazda 626, 929, and Protege vehicles.

Detailed Product Description

This Centric disc brake rotor features a vented construction with straight vanes that promote effective heat dissipation during braking. The rotor’s nominal thickness of 0.945 inches (24.0 mm) ensures structural integrity, while the discard thickness of 0.866 inches (22.0 mm) indicates the minimum safe thickness for replacement. The overall height measures 1.866 inches (47.4 mm), and the outside diameter is 10.776 inches (273.7 mm), matching OEM specifications for proper fitment.

The rotor mounts using a floating disc mounting system and includes five lug holes with a diameter of 0.512 inches (13.0 mm) arranged on a 4.5 inch (114.3 mm) bolt circle diameter. The center hole diameter is 2.839 inches (72.1 mm), ensuring precise alignment on the hub. 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 626, 929, and Protege
• Addresses brake pulsation caused by uneven rotor surfaces
• Improves braking performance by restoring proper rotor thickness
• Helps reduce brake fade through vented rotor design
• Suitable for routine maintenance and brake system overhauls

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets discard specifications
• Clean rotor surface to remove any protective coatings or debris
• Check compatibility with existing brake pads and hardware
• Torque lug nuts to manufacturer specifications for safe mounting
• Inspect hub surface for rust or damage to ensure proper rotor seating

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. While specific warranty details for part number 121.45045 may vary, Centric typically offers limited warranties covering defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.