Centric 121.45012 Disc Brake Rotor - Front

Overview of Centric C-TEK Standard Disc Brake Rotor 121.45012

The Centric C-TEK Standard Disc Brake Rotor 121.45012 is engineered for reliable braking performance on Mazda RX-7 models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and durability for everyday driving conditions.

• Compatible with Mazda RX-7 vehicles
• Vented disc brake rotor design for improved cooling
• Overall diameter of 9.843 inches (250 mm)
• Nominal thickness of 0.866 inches (22 mm) with discard thickness at 0.787 inches (20 mm)
• Curved vane style for efficient airflow
• Center hole diameter of 2.343 inches (59.5 mm)
• Mounting bolt hole circle diameter of 4.5 inches (114.3 mm) with 4 lug holes
• Weight approximately 17.2 lbs (7.82 kgs)
• ABS tone ring not included

Product Line Details: C-TEK Standard Disc Brake Rotors

The C-TEK Standard Disc Brake Rotors line by Centric focuses on providing OEM-quality replacement rotors that meet or exceed factory specifications. This product line emphasizes precise fitment and consistent braking performance, making it suitable for Mazda RX-7 owners seeking dependable rotor replacements without modifications.

Technical Specifications and Features

This disc brake rotor features a vented design with curved vanes that enhance heat dissipation during braking, reducing the risk of brake fade. The smooth surface finish ensures even pad contact and wear. With a nominal thickness of 0.866 inches (22 mm) and a discard thickness of 0.787 inches (20 mm), this rotor maintains structural integrity throughout its service life. The rotor mounts via a 4-lug hole pattern with a 4.5-inch (114.3 mm) bolt circle diameter, and the center hole diameter measures 2.343 inches (59.5 mm), ensuring proper alignment on the hub. Note that this rotor does not include bearings or ABS tone rings, and studs are not included.

Applications and Problem Solving

• Replacement for worn or warped rotors on Mazda RX-7
• Addresses brake pulsation caused by uneven rotor surfaces
• Improves heat management to reduce brake fade during extended use
• Restores proper rotor thickness for safe braking performance
• Suitable for routine maintenance and brake system overhauls

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 0.787 inches (20 mm) before installation. Clean the rotor surface to remove any protective coatings or debris. Verify the mounting bolt hole circle diameter of 4.5 inches (114.3 mm) and the 4-lug hole pattern match your vehicle’s hub. Since bearings and studs are not included, inspect and reuse or replace these components as necessary. Proper torque specifications should be followed during installation to maintain rotor alignment and safety.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards, ensuring consistent quality and fitment for Mazda RX-7 vehicles. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. It is recommended to consult the product packaging or Centric’s official resources for exact warranty terms.