Centric 121.62090 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.62090

The Centric C-TEK Standard Disc Brake Rotor 121.62090 is engineered for reliable braking performance on Pontiac GTO models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and stable stopping power under various driving conditions.

• Compatible with Pontiac GTO vehicles
• Part number 121.62090 for precise identification
• Vented disc brake rotor design for improved cooling
• Nominal thickness of 0.709 inches (18.000 mm) and discard thickness of 0.630 inches (16.000 mm)
• Overall height of 3.130 inches (79.500 mm)
• Outside diameter measuring 11.248 inches (285.700 mm)
• Five lug holes with 0.500 inch (12.700 mm) diameter
• Center hole diameter of 2.760 inches (70.100 mm)
• Pillar vane style for enhanced airflow
• Weight approximately 15.2 lbs (6.91 kgs)

Product Line Details: C-TEK Standard Disc Brake Rotors

The C-TEK Standard Disc Brake Rotors line by Centric focuses on delivering dependable, OE-quality replacement rotors. This product line emphasizes precise fitment and consistent performance, making it suitable for routine maintenance and brake system repairs. The 121.62090 rotor maintains the original equipment specifications for the Pontiac GTO, ensuring compatibility and reliable braking response.

Technical Description and Specifications

This disc brake rotor features a vented design with pillar-style vanes that facilitate efficient heat dissipation, reducing the risk of brake fade during extended use. The smooth surface finish supports even pad contact and wear. With a nominal thickness of 0.709 inches and a discard thickness of 0.630 inches, this rotor provides a clear service life indicator. The rotor’s overall height is 3.130 inches, and it has an outside diameter of 11.248 inches, matching the original equipment dimensions for the Pontiac GTO. The rotor includes five lug holes with a diameter of 0.500 inches and a mounting bolt hole circle diameter of 4.724 inches (120.000 mm). This rotor does not include an ABS tone ring or bearings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Pontiac GTO
• Addresses brake pulsation and vibration issues
• Restores braking efficiency and pedal feel
• Prevents overheating and brake fade during normal driving
• Suitable for routine brake system maintenance and repair

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the rotor thickness is above the discard limit of 0.630 inches to maintain safety standards. Use proper torque specifications for lug nuts and mounting bolts to avoid rotor warping. Since this rotor does not include bearings or an ABS tone ring, reuse existing components or replace separately as needed. It is recommended to replace brake pads simultaneously for optimal performance.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet or exceed OEM specifications, providing consistent quality and fitment. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Refer to Centric’s official documentation for complete warranty information.