Centric 121.84003 Disc Brake Rotor - Rear

Reliable Centric C-TEK Standard Disc Brake Rotor 121.84003

The Centric C-TEK Standard Disc Brake Rotor 121.84003 offers dependable braking performance with precise engineering. Designed for vehicles requiring vented rotors with ABS tone rings, this rotor meets strict specifications for thickness, diameter, and mounting compatibility.

• Vented disc brake rotor with smooth surface for consistent braking
• Includes cast-in ABS tone ring for accurate wheel speed sensor readings
• Overall diameter of 380 mm (14.961 inches) with 10 mounting bolt holes
• Nominal thickness of 36.5 mm (1.437 inches) and discard thickness of 33.53 mm (1.320 inches)
• Designed to mount behind the hub with a center hole diameter of 241.3 mm (9.5 inches)
• OEM vane count of 40 for effective heat dissipation
• Weight approximately 59 lbs for balanced performance

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric is engineered to provide reliable, OEM-quality replacement rotors. This product line focuses on standard vented rotors with smooth surfaces and integrated ABS tone rings, ensuring compatibility with factory ABS systems and maintaining proper braking function. The 121.84003 rotor exemplifies this line’s commitment to precise fitment and consistent performance.

Technical Details and Specifications

This disc brake rotor features a vented design with 40 OEM-style vanes to optimize cooling during braking. The smooth surface finish supports even pad wear and braking response. With a mounting bolt hole circle diameter of 285.5 mm (11.24 inches) and 10 bolt holes sized at 27 mm (1.063 inches), it fits vehicles requiring these exact dimensions. The rotor mounts behind the hub, and the cast-in ABS tone ring ensures proper ABS sensor operation without additional components. The nominal thickness of 36.5 mm and discard thickness of 33.53 mm provide clear service limits for maintenance.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Restores proper ABS sensor function with integrated tone ring
• Improves heat dissipation to reduce brake fade under heavy use
• Addresses rotor thickness below manufacturer discard limits
• Compatible with vehicles requiring 10-bolt vented rotors with specific diameter and mounting specs

Installation Notes and Tips

Ensure the rotor mounting surface and hub are clean and free of debris before installation. Verify the rotor’s orientation to mount behind the hub as specified. Check the ABS tone ring alignment with the wheel speed sensor to avoid sensor errors. Measure rotor thickness before installation to confirm it meets minimum specifications. Use proper torque settings on mounting bolts to prevent rotor warping.

Quality Assurance and Warranty

Centric manufactures the C-TEK Standard Disc Brake Rotors to meet or exceed OEM standards. Each rotor undergoes strict quality control to ensure dimensional accuracy and material integrity. 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.