Centric 121.34186 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for BMW and Mini Vehicles

The Centric C-TEK Standard Disc Brake Rotor 121.34186 is engineered to provide consistent braking performance for select BMW and Mini models. Designed with precision, this vented rotor ensures effective heat dissipation and smooth braking under various driving conditions.

• Vented disc brake rotor with straight vane design for improved cooling
• Outside diameter of 13.189 inches (335 mm) for exact fitment
• Nominal thickness of 1.181 inches (30 mm) with discard thickness at 1.118 inches (28.4 mm)
• Overall height measures 1.787 inches (45.4 mm)
• Floating disc mounting with 5 lug holes, 0.646 inches (16.4 mm) diameter each
• Center hole diameter of 2.638 inches (67 mm) and mounting bolt hole circle diameter of 4.409 inches (112 mm)
• Solid smooth surface type without ABS tone ring included
• Weight approximately 24.4 lbs (11.2 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers reliable replacement rotors designed to meet or exceed OEM specifications. This product line focuses on providing rotors with precise dimensions and quality materials to ensure proper fit and consistent braking performance. The 121.34186 rotor is part of this line, delivering a vented design that helps maintain optimal operating temperatures for BMW and Mini vehicles.

Detailed Product Description

This Centric disc brake rotor features a vented design with 40 straight vanes, which enhances airflow and heat dissipation during braking. The smooth surface type ensures even pad contact and reduces noise. The rotor’s floating disc mounting and exact fitment dimensions, including a 5-lug hole pattern and specific center hole diameter, make it compatible with BMW X1, X2, and Mini Cooper, Cooper Clubman, and Cooper Countryman models. The rotor’s thickness and discard thickness specifications help maintain safety and performance standards by indicating when replacement is necessary.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Improves braking consistency on BMW X1 and X2 models
• Restores proper braking performance on Mini Cooper and Clubman vehicles
• Addresses overheating issues with vented rotor design
• Eliminates uneven pad wear due to rotor surface irregularities

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness before installation. Clean the rotor surface to remove any protective coating or debris. Verify the 5-lug hole pattern and center hole diameter match the vehicle hub. This rotor does not include bearings or ABS tone ring, so confirm compatibility with your vehicle’s braking system. Proper torque specifications should be followed when mounting the rotor.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Using this rotor ensures adherence to manufacturer specifications for BMW and Mini brake systems.