Centric 121.39020 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.39020

The Centric C-TEK Standard Disc Brake Rotor 121.39020 is engineered for reliable braking performance on select Volvo models. Designed as a solid rotor with a smooth surface, it provides consistent stopping power for vehicles like the Volvo 850, C70, S70, and V70.

• Compatible with Volvo 850, C70, S70, and V70 models
• Part number 121.39020 for precise identification
• Solid disc brake rotor with smooth surface finish
• Outside diameter of 11.614 inches (295 mm)
• Nominal thickness of 0.378 inches (9.6 mm) and discard thickness of 0.331 inches (8.4 mm)
• Overall height of 2.835 inches (72 mm)
• Five lug holes with 0.581 inch (14.75 mm) diameter and 4.252 inch (108 mm) bolt circle diameter
• Center hole diameter of 2.677 inches (68 mm)
• Weight approximately 11.4 lbs (5.18 kgs)
• Does not include ABS tone ring or bearings

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors designed to meet or exceed OEM specifications for standard braking applications. This product line focuses on delivering consistent performance and durability with solid rotor construction and smooth surfaces, suitable for everyday driving conditions. The 121.39020 rotor is part of this line, providing a direct replacement option for compatible Volvo vehicles.

Detailed Product Description

This Centric disc brake rotor features a solid design with a smooth surface type, ensuring even pad contact and reliable braking response. The rotor measures 11.614 inches in outside diameter and has a nominal thickness of 0.378 inches, with a discard thickness of 0.331 inches, indicating when replacement is necessary. The overall height is 2.835 inches, and it includes five lug holes arranged on a 4.252 inch bolt circle diameter, matching the factory specifications for Volvo 850, C70, S70, and V70 models. The rotor does not include an ABS tone ring or bearings, so these components must be sourced separately if required.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Restores proper rotor thickness to maintain braking efficiency
• Eliminates noise and vibration from uneven rotor surfaces
• Addresses rotor damage from corrosion or scoring
• Ensures compatibility with Volvo 850, C70, S70, and V70 braking systems

Installation Notes and Tips

• Verify rotor dimensions and bolt pattern match vehicle specifications before installation
• Ensure hub surface is clean and free of rust to prevent rotor runout
• Torque lug nuts to manufacturer specifications to avoid rotor distortion
• Replace brake pads when installing new rotors for optimal performance
• Check for ABS tone ring requirements as this rotor does not include one

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Using part number 121.39020 ensures compatibility and quality consistent with Volvo factory requirements.