Centric 121.39023 Disc Brake Rotor - Front

Overview of Centric C-TEK Standard Disc Brake Rotor 121.39023

The Centric C-TEK Standard Disc Brake Rotor 121.39023 is engineered for reliable braking performance on select Volvo models. Designed specifically for Volvo C70, S70, and V70 vehicles, this vented disc brake rotor ensures consistent heat dissipation and smooth braking response.

• Compatible with Volvo C70, S70, and V70 models
• Part number 121.39023 for precise identification
• Vented rotor design with straight vane style for improved cooling
• Nominal thickness of 1.024 inches (26.000 mm) and discard thickness of 0.906 inches (23.000 mm)
• Overall height of 1.976 inches (50.200 mm) and outside diameter of 11.890 inches (302.000 mm)
• Floating disc mounting with 5 stud/lug holes (0.575 inches diameter) on a 4.252 inch (108.000 mm) bolt circle diameter
• Smooth surface type for consistent pad contact
• Weight approximately 16.37 lbs (7.44 kgs)

Detailed Product Description

This Centric C-TEK Standard Disc Brake Rotor 121.39023 is a vented rotor designed to fit Volvo C70, S70, and V70 models. The vented design with straight vanes promotes efficient heat dissipation during braking, reducing the risk of brake fade under normal driving conditions. The rotor features a smooth surface type that ensures even brake pad wear and consistent stopping power. With a nominal thickness of 1.024 inches (26.000 mm) and a discard thickness of 0.906 inches (23.000 mm), this rotor meets OEM specifications for thickness tolerances, helping maintain optimal braking performance and safety. The overall height of 1.976 inches (50.200 mm) and outside diameter of 11.890 inches (302.000 mm) are engineered to match the original equipment dimensions for proper fitment and function.

The rotor mounts using a floating disc mounting system with five stud/lug holes, each 0.575 inches (14.600 mm) in diameter, arranged on a 4.252 inch (108.000 mm) bolt circle diameter. This ensures secure installation and alignment with the vehicle’s hub assembly. Note that this rotor does not include an ABS tone ring or bearings, so those components must be sourced separately if required.

About the C-TEK Standard Disc Brake Rotors Line

The Centric C-TEK Standard Disc Brake Rotors line is designed to provide reliable, direct replacement rotors that meet or exceed OEM specifications. This product line focuses on delivering rotors with precise dimensions, quality materials, and consistent performance for everyday driving conditions. The 121.39023 rotor exemplifies this approach by offering a vented design and exact fitment for Volvo vehicles, ensuring dependable braking without unnecessary modifications.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing rotor thickness below discard limits to maintain braking safety
• Improving heat dissipation to reduce brake fade during extended use
• Restoring smooth braking surface for consistent pad contact and wear
• Ensuring proper fitment on Volvo C70, S70, and V70 models for safe operation

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness
• Clean rotor surface and hub mounting area to prevent uneven wear or noise
• Use proper torque specifications on lug nuts to avoid rotor warping
• Check compatibility with vehicle ABS system as this rotor does not include an ABS tone ring
• Inspect brake pads and replace if worn to optimize braking performance

Quality Assurance and Warranty

Centric manufactures the C-TEK Standard Disc Brake Rotors to meet strict quality standards, ensuring dimensional accuracy and material integrity. While specific warranty details for part number 121.39023 should be confirmed with the supplier, Centric typically offers limited warranties covering defects in materials and workmanship. This rotor is engineered to provide consistent braking performance when installed according to manufacturer guidelines.