Centric 121.34138 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Mini Cooper Models

The Centric C-TEK Standard Disc Brake Rotor 121.34138 is engineered for precise fitment and consistent braking performance on Mini Cooper Countryman and Cooper Paceman vehicles. Designed to meet OEM specifications, this vented rotor ensures effective heat dissipation and durability under normal driving conditions.

• Compatible with Mini Cooper Countryman and Cooper Paceman
• Part number 121.34138 for exact replacement
• Vented disc design for improved cooling
• Nominal thickness of 0.941 inches (23.9 mm)
• Discard thickness at 0.882 inches (22.4 mm)
• Outside diameter of 12.087 inches (307 mm)
• Overall height of 1.780 inches (45.2 mm)
• Floating disc mounting with 5 lug holes (0.654 inch diameter)
• Smooth surface type for consistent pad contact

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors manufactured to meet or exceed OEM standards, providing reliable braking performance for daily driving. This product line focuses on delivering rotors with precise dimensions and quality materials, ensuring proper fit and function for vehicles like the Mini Cooper Countryman and Cooper Paceman. The 121.34138 rotor is part of this line, featuring a vented design to help reduce heat buildup during braking.

Technical Specifications and Features

This disc brake rotor features a vented vane style that promotes airflow to dissipate heat effectively, reducing the risk of brake fade. The rotor has a nominal thickness of 0.941 inches (23.9 mm) and a discard thickness of 0.882 inches (22.4 mm), indicating when replacement is necessary. The outside diameter measures 12.087 inches (307 mm), with an overall height of 1.780 inches (45.2 mm). It includes a floating disc mounting system and five lug holes with a diameter of 0.654 inches (16.6 mm), ensuring secure installation. The smooth surface type provides consistent contact with brake pads, contributing to stable braking performance. Note that this rotor does not include an ABS tone ring or bearings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Mini Cooper Countryman and Cooper Paceman
• Addresses brake pulsation caused by uneven rotor surfaces
• Improves braking consistency by restoring proper rotor thickness
• Helps reduce overheating issues with vented rotor design
• Suitable for routine maintenance and brake system repairs

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it meets the nominal thickness specifications. Clean the rotor surface to remove any protective coatings or debris prior to mounting. Use proper torque specifications for the 5 lug bolts to avoid rotor warping. Since this rotor does not include bearings or an ABS tone ring, verify compatibility with your vehicle’s existing components. It is recommended to replace brake pads simultaneously for optimal braking performance.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet OEM quality standards, providing reliable performance and durability. While specific warranty details for part number 121.34138 should be confirmed with the supplier, Centric typically offers limited warranties covering defects in materials and workmanship. Proper installation and maintenance are essential to ensure the longevity of the rotor.