Centric 121.39030 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.39030

The Centric C-TEK Standard Disc Brake Rotor 121.39030 is engineered for reliable braking performance on Volvo S70 and V70 models. Designed as a solid rotor with a smooth surface, it meets the specifications required for consistent stopping power and durability.

• Compatible with Volvo S70 and V70 vehicles
• Part number 121.39030 for precise identification
• Solid disc brake rotor with smooth surface finish
• Nominal thickness of 0.472 inches (12.000 mm)
• Outside diameter of 11.339 inches (288.000 mm)
• Overall height of 2.441 inches (62.000 mm)
• Five stud/lug holes with 0.614 inch (15.600 mm) diameter
• Center hole diameter of 2.677 inches (68.000 mm)
• Mounting bolt hole circle diameter of 4.252 inches (108.000 mm)
• Does not include ABS tone ring or bearings

Product Line Details: C-TEK Standard Disc Brake Rotors

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors designed to meet OEM specifications for standard braking applications. This product line focuses on providing rotors with consistent thickness and dimensions to ensure proper fit and function. The 121.39030 rotor is a solid type, suitable for vehicles requiring a smooth braking surface without venting, aligning with the needs of Volvo S70 and V70 models.

Technical Specifications and Features

This Centric rotor features a nominal thickness of 0.472 inches (12.000 mm) and a discard thickness of 0.394 inches (10.000 mm), indicating the minimum thickness before replacement is necessary. The rotor’s outside diameter measures 11.339 inches (288.000 mm), with an overall height of 2.441 inches (62.000 mm). It includes five stud/lug holes sized at 0.614 inches (15.600 mm) diameter, and a mounting bolt hole circle diameter of 4.252 inches (108.000 mm). The center hole diameter is 2.677 inches (68.000 mm). This rotor does not include an ABS tone ring or bearings, which should be sourced separately if required.

Applications and Problem Solving

• Replacement for worn or warped rotors on Volvo S70 and V70
• Restores proper braking performance and pedal feel
• Addresses rotor thickness below discard limits to maintain safety
• Eliminates brake noise caused by uneven rotor surfaces
• Prevents brake pulsation due to rotor runout or damage

Installation Notes and Tips

• Ensure rotor thickness is measured before installation to confirm discard limits
• Clean rotor surface and hub mounting area to prevent uneven wear
• Torque lug nuts to manufacturer specifications for proper fitment
• Check compatibility with existing brake pads and hardware
• ABS tone ring and bearings must be installed separately if applicable

Quality Assurance and Warranty

Centric’s 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 121.39030 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. It is recommended to consult Centric’s official documentation or authorized distributors for warranty terms related to this rotor.