Centric 121.85001 Disc Brake Rotor - Front

Reliable Performance with Centric C-TEK Standard Disc Brake Rotors

The Centric C-TEK Standard Disc Brake Rotor 121.85001 offers dependable braking performance designed for vehicles requiring vented, smooth surface rotors. Engineered to meet OEM specifications, this rotor supports consistent stopping power and heat dissipation for safe driving conditions.

• Vented disc brake rotor with smooth surface finish
• Nominal thickness of 1.181 inches (30.000 mm) and discard thickness of 1.093 inches (27.750 mm)
• Overall height of 2.307 inches (58.600 mm) for precise fitment
• Outside diameter measuring 12.677 inches (322.000 mm)
• Hat-shaped design with floating disc mounting for improved thermal management
• 10 stud/lug holes with 0.587 inch (14.900 mm) diameter for secure installation
• Straight vane style for effective cooling

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric is engineered to provide a balance of quality and value for standard braking applications. These rotors are designed with vented construction to enhance heat dissipation and reduce brake fade, making them suitable for a wide range of passenger vehicles. The smooth surface finish ensures consistent pad contact and braking performance, while the floating disc mounting and hat-shaped design contribute to durability and thermal efficiency.

Technical Specifications and Features

This Centric rotor features a nominal thickness of 1.181 inches (30.000 mm) and a discard thickness of 1.093 inches (27.750 mm), indicating when replacement is necessary to maintain braking safety. The rotor’s overall height is 2.307 inches (58.600 mm), with an outside diameter of 12.677 inches (322.000 mm), ensuring compatibility with specific vehicle models requiring these dimensions. The 10 stud/lug holes, each 0.587 inches (14.900 mm) in diameter, align with mounting bolt hole circle diameter of 4.250 inches (107.950 mm), facilitating proper installation. The rotor does not include an ABS tone ring or bearings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing reduced braking efficiency due to rotor thickness below discard limits
• Improving heat dissipation to prevent brake fade during extended use
• Resolving noise or vibration issues related to rotor surface irregularities
• Upgrading to vented rotors for enhanced thermal management in daily driving

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it meets or exceeds the nominal thickness of 1.181 inches (30.000 mm). The hat-shaped design and floating disc mounting require proper alignment with the vehicle’s hub assembly. Use the 10 stud/lug holes to secure the rotor firmly, matching the mounting bolt hole circle diameter of 4.250 inches (107.950 mm). Since this rotor does not include bearings or an ABS tone ring, verify compatibility with your vehicle’s braking system components before installation.

Quality Assurance and Warranty

Centric manufactures the C-TEK Standard Disc Brake Rotors to meet or exceed OEM standards, ensuring reliable performance and durability. While specific warranty details for part number 121.85001 are not provided, Centric typically offers coverage against defects in materials and workmanship. For precise warranty information, consult the product documentation or manufacturer resources.