Centric 121.40051 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.40051

The Centric C-TEK Standard Disc Brake Rotor 121.40051 is designed specifically for Acura RL models, providing reliable braking performance with precise fitment. This solid, smooth-surface rotor meets OEM specifications to ensure consistent stopping power and durability.

• Compatible with Acura RL vehicles
• Part number 121.40051 for exact replacement
• Solid disc brake rotor with smooth surface finish
• Outside diameter of 11.102 inches (282 mm)
• Nominal thickness of 0.472 inches (12 mm) and discard thickness of 0.394 inches (10 mm)
• Overall height of 2.362 inches (60 mm)
• Five lug holes with 0.496 inch (12.6 mm) diameter and 4.5 inch (114.3 mm) bolt circle diameter
• Center hole diameter of 2.764 inches (70.2 mm)
• Does not include ABS tone ring or bearings
• Disc mounting type: Floating / dih
• Weight approximately 11 lbs (5 kg)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors engineered to meet or exceed OEM standards for fit, form, and function. This product line focuses on providing solid rotors with smooth surfaces that are ideal for everyday driving conditions. The 121.40051 rotor is part of this line, ensuring compatibility and reliable braking performance for Acura RL owners seeking a direct replacement rotor.

Detailed Product Description

This Centric disc brake rotor features a solid design with a smooth surface type, which helps maintain consistent brake pad contact and reduces noise during braking. The rotor’s outside diameter measures 11.102 inches (282 mm), with a nominal thickness of 0.472 inches (12 mm) and a discard thickness of 0.394 inches (10 mm), indicating when the rotor should be replaced to maintain safe braking performance. The overall height of 2.362 inches (60 mm) ensures proper alignment with the brake caliper assembly. The rotor includes five lug holes sized at 0.496 inches (12.6 mm) on a 4.5 inch (114.3 mm) bolt circle diameter, matching the Acura RL’s wheel hub specifications. The center hole diameter of 2.764 inches (70.2 mm) allows for precise mounting on the vehicle’s hub. This rotor does not include an ABS tone ring or bearings, so those components must be sourced separately if required.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Acura RL models
• Addresses brake pulsation or vibration issues caused by uneven rotor surfaces
• Restores proper rotor thickness to maintain braking efficiency
• Eliminates brake noise related to rotor surface imperfections
• Ensures safe stopping distances by providing OEM-spec rotor dimensions

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness
• Clean rotor surface and hub mounting area to prevent uneven wear or noise
• Use proper torque specifications on lug nuts to avoid rotor warping
• Check compatibility with existing brake pads and calipers on Acura RL
• Inspect related components such as bearings and ABS tone rings, as these are not included

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet strict quality standards, ensuring consistent performance and durability. While specific warranty details for part number 121.40051 should be confirmed with the supplier, Centric typically offers limited warranties covering defects in materials and workmanship. This rotor is engineered to provide reliable braking performance for Acura RL vehicles when installed and maintained according to manufacturer guidelines.