Centric 121.39028 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.39028

The Centric C-TEK Standard Disc Brake Rotor 121.39028 is engineered for reliable braking performance on select Mitsubishi and Volvo vehicles. Designed as a solid, smooth-surface rotor, it provides consistent stopping power for models such as the Mitsubishi Space Star and Volvo S40 and V40.

• Compatible with Mitsubishi Space Star and Volvo S40, V40 models
• Part number 121.39028 for precise identification
• Solid disc brake rotor with smooth surface finish
• Overall diameter of 10.236 inches (260 mm) and overall height of 1.614 inches (41 mm)
• Nominal thickness of 0.394 inches (10 mm) and discard thickness of 0.331 inches (8.4 mm)
• Floating disc mounting design with 4 lug holes (0.496 inches diameter)
• Center hole diameter of 3.547 inches (90.1 mm) and mounting bolt hole circle diameter of 4.5 inches (114.3 mm)
• Weight approximately 7.98 lbs (3.63 kgs)

Details on C-TEK Standard Disc Brake Rotors Product Line

The C-TEK Standard Disc Brake Rotors line by Centric offers a balance of quality and value for everyday driving conditions. This product line focuses on delivering rotors with precise fitment and consistent surface finish, suitable for standard braking systems without ABS tone rings or additional bearings. The 121.39028 rotor exemplifies this approach with its solid construction and smooth surface, designed to meet OEM specifications for Mitsubishi and Volvo vehicles.

Technical Specifications and Features

This disc brake rotor features a solid design with a smooth surface type, ensuring uniform contact with brake pads. The rotor’s nominal thickness is 0.394 inches (10 mm), with a discard thickness of 0.331 inches (8.4 mm), indicating when replacement is necessary to maintain braking efficiency. The overall height measures 1.614 inches (41 mm), and the outside diameter is 10.236 inches (260 mm), matching OEM dimensions for proper fitment.

The rotor includes a floating disc mounting system and has four stud/lug holes with a diameter of 0.496 inches (12.6 mm). The center hole diameter is 3.547 inches (90.1 mm), and the mounting bolt hole circle diameter is 4.5 inches (114.3 mm). This rotor does not include an ABS tone ring or bearings, aligning with the original equipment design for the Mitsubishi Space Star and Volvo S40 and V40 models.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing reduced braking performance due to rotor thickness below discard limits
• Eliminating noise or vibration from uneven rotor surfaces
• Restoring proper rotor dimensions for safe and effective braking
• Ensuring compatibility with Mitsubishi Space Star and Volvo S40, V40 braking systems

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets nominal specifications
• Clean rotor surface to remove any protective coatings or debris prior to mounting
• Check compatibility with vehicle lug pattern and mounting bolt circle diameter
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Inspect brake pads and replace if worn to ensure optimal rotor performance

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 121.39028 are not provided here, Centric typically offers coverage against defects in materials and workmanship. Users should consult product documentation or authorized sources for exact warranty terms.