Centric 121.65031 Disc Brake Rotor - Front

Overview of Centric C-TEK Standard Disc Brake Rotor 121.65031

The Centric C-TEK Standard Disc Brake Rotor 121.65031 is engineered for reliable braking performance on Ford Bronco II, Ford Explorer, and Mazda Navajo models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and durability for everyday driving conditions.

• Compatible with Ford Bronco II, Ford Explorer, and Mazda Navajo
• Vented disc brake rotor design for improved cooling
• Nominal thickness of 0.862 inches (21.900 mm) with discard thickness at 0.811 inches (20.600 mm)
• Outside diameter measures 10.276 inches (261.000 mm)
• Stud thread diameter of 0.500 inches and 5 lug holes
• Overall height of 4.146 inches (105.300 mm)
• Center hole diameter of 2.764 inches (70.200 mm)
• Mounting bolt hole circle diameter of 4.500 inches (114.300 mm)
• Weight approximately 19 lbs (8.640 kgs)
• ABS tone ring not 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 replacement rotors. This product line focuses on providing rotors that meet or exceed OEM specifications, featuring vented designs for enhanced heat dissipation and smooth surfaces to ensure consistent pad contact. The 121.65031 rotor is part of this line, delivering dependable braking performance for compatible Ford and Mazda vehicles.

Detailed Product Description

This Centric disc brake rotor is a vented type with straight vanes, which helps maintain optimal operating temperatures by allowing air to flow through the rotor. The smooth surface finish supports even brake pad wear and reduces noise. With a nominal thickness of 0.862 inches and a discard thickness of 0.811 inches, this rotor provides a clear service life indicator to maintain safe braking performance. The rotor mounts to the hub and rotor assembly with a 5-lug pattern, featuring a stud thread diameter of 0.500 inches and a mounting bolt hole circle diameter of 4.500 inches. The overall height of 4.146 inches and outside diameter of 10.276 inches ensure proper fitment on specified Ford Bronco II, Ford Explorer, and Mazda Navajo models.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Restores braking efficiency on Ford Bronco II, Explorer, and Mazda Navajo
• Addresses rotor thickness below manufacturer discard limits
• Improves heat dissipation to reduce brake fade during extended use
• Eliminates uneven pad wear due to rotor surface imperfections

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean rotor surface to remove any protective coatings or debris
• Verify compatibility with vehicle make and model prior to installation
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Inspect related components such as bearings and seals (inner bearing 410.91006, outer bearing 410.91002, inner seal 417.61000) during installation

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 121.65031 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Users should consult product documentation or Centric directly for warranty terms applicable to this rotor.