Centric 121.99018 Disc Brake Rotor - Rear

Reliable Centric C-TEK Standard Disc Brake Rotor Overview

The Centric C-TEK Standard Disc Brake Rotor 121.99018 offers a solid, smooth-surfaced braking solution designed for precise stopping power. Engineered for vehicles requiring a 237.6 mm (9.354 inch) outside diameter rotor, this part ensures consistent performance and durability.

• Part Number: 121.99018
• Brand: Centric
• Brand Line: C-TEK Standard Disc Brake Rotors
• Outside Diameter: 237.6 mm (9.354 inches)
• Nominal Thickness: 8.2 mm (0.323 inches)
• Discard Thickness: 7.0 mm (0.276 inches)
• Overall Height: 74.5 mm (2.933 inches)
• Solid, smooth surface rotor design
• Floating disc mounting type
• 4 stud/lug holes with 12 mm diameter
• Mounting Bolt Hole Circle Diameter: 100 mm (3.937 inches)
• Center Hole Diameter: 66.2 mm (2.606 inches)
• Weight: 4.02 kg (8.85 lbs)
• ABS tone ring not included
• No bearings included

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric is designed to provide dependable, OEM-quality replacement rotors for a wide range of vehicles. This product line focuses on solid rotors with smooth surfaces, suitable for standard braking applications where consistent performance and fitment accuracy are essential. The 121.99018 rotor exemplifies this approach with precise dimensions and a floating disc mounting style to accommodate typical vehicle brake systems.

Detailed Product Description

This Centric disc brake rotor features a solid construction with a smooth surface type, optimized for vehicles requiring a 237.6 mm outside diameter rotor. The nominal thickness of 8.2 mm ensures adequate material for effective heat dissipation and wear resistance, while the discard thickness of 7.0 mm indicates the minimum safe thickness before replacement is necessary. The rotor’s overall height of 74.5 mm and center hole diameter of 66.2 mm provide compatibility with specific hub assemblies. The floating disc mounting design allows for slight movement to reduce stress and improve braking consistency. With four stud holes sized at 12 mm diameter and a mounting bolt hole circle diameter of 100 mm, this rotor fits vehicles with matching hub configurations. The absence of an ABS tone ring means this rotor is intended for vehicles without ABS sensor integration on the rotor itself.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Upgrading from damaged or scored rotors to restore smooth braking
• Addressing rotor thickness below manufacturer discard limits
• Resolving uneven brake pad wear due to rotor surface imperfections
• Ensuring proper fitment for vehicles requiring a 237.6 mm diameter solid rotor

Installation Notes and Tips

• Verify vehicle compatibility by matching rotor dimensions and bolt pattern
• Inspect hub surface for cleanliness and damage before installation
• Torque mounting bolts to manufacturer specifications to avoid rotor warping
• Replace brake pads when installing new rotors to ensure optimal performance
• Check for ABS sensor requirements as this rotor does not include a tone ring

Quality Assurance and Warranty

Centric provides quality-tested disc brake rotors manufactured to meet or exceed OEM standards. The C-TEK Standard Disc Brake Rotors line, including part number 121.99018, undergoes rigorous inspection to ensure dimensional accuracy and material integrity. While specific warranty details may vary, Centric typically offers coverage against defects in materials and workmanship, supporting reliable braking performance for compatible vehicles.