Centric 121.34040 Disc Brake Rotor - Front

Overview of Centric C-TEK Standard Disc Brake Rotor 121.34040

The Centric C-TEK Standard Disc Brake Rotor 121.34040 is engineered for reliable braking performance on BMW 318ti and Z3 models. Designed as a solid, smooth-surface rotor, it meets precise specifications to maintain consistent stopping power and vehicle safety.

• Compatible with BMW 318ti and Z3 vehicles
• Part number 121.34040 for exact fitment
• Solid disc brake rotor with smooth surface finish
• Nominal thickness of 0.472 inches (12.000 mm)
• Discard thickness at 0.409 inches (10.400 mm)
• Overall height of 2.035 inches (51.700 mm)
• Outside diameter measuring 11.260 inches (286.000 mm)
• Floating disc mounting design with 5 lug holes
• Does not include ABS tone ring or bearings
• Weight approximately 11.39 lbs (5.18 kgs)

Detailed Product Description

This Centric C-TEK Standard Disc Brake Rotor 121.34040 is a solid rotor designed to provide consistent braking performance for BMW 318ti and Z3 models. The rotor features a smooth surface type that ensures even pad contact and wear. With a nominal thickness of 0.472 inches (12.000 mm) and a discard thickness of 0.409 inches (10.400 mm), this rotor maintains structural integrity and safety standards throughout its service life. The overall height of 2.035 inches (51.700 mm) and an outside diameter of 11.260 inches (286.000 mm) are engineered to match OEM specifications for proper fit and function. The rotor includes a floating disc mounting design with a 5-stud lug hole pattern, each hole measuring 0.591 inches (15.000 mm) in diameter, and a mounting bolt hole circle diameter of 4.724 inches (120.000 mm). This part does not include an ABS tone ring or bearings, so those components must be sourced separately if required.

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors designed to meet or exceed OEM specifications for standard braking applications. This product line focuses on delivering reliable, consistent performance with solid rotors that feature smooth surfaces for even pad wear. The 121.34040 rotor is part of this line, providing a direct replacement solution for BMW 318ti and Z3 models requiring a dependable disc brake rotor without additional features like venting or ABS tone rings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 318ti and Z3
• Addresses brake pulsation caused by uneven rotor thickness
• Restores proper braking performance and pedal feel
• Eliminates noise and vibration from damaged rotors
• Ensures safe stopping distances by maintaining rotor thickness within specifications

Installation Notes and Tips

• Verify rotor thickness before installation; replace if below discard thickness of 0.409 inches (10.400 mm)
• Ensure mounting surfaces are clean and free of debris for proper rotor seating
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Check compatibility with existing brake pads and hardware
• ABS tone ring and bearings are not included and must be installed separately if applicable

Quality Assurance and Warranty

Centric manufactures the C-TEK Standard Disc Brake Rotors to meet strict quality standards, ensuring durability and consistent performance. The 121.34040 rotor undergoes rigorous testing to comply with OEM fitment and safety requirements. Warranty coverage details should be confirmed with the product documentation or manufacturer, as it may vary by region and application.