Brembo 08.5366.21 Disc Brake Rotor - Rear

Brembo UV Coated Rear Rotor for BMW

The Brembo 08.5366.21 is a rear disc brake rotor built as a direct OE-style replacement for select BMW applications. It uses a UV-coated surface for corrosion resistance and a grey cast iron construction to support stable braking performance, reduced noise, and consistent pedal feel.

Compatible With 1992-1999 BMW 318i, 318is, 320i, 323is, 325i, 325is, 328i, and 328is rear brake applications, this rotor is part of Brembo’s Premium UV Coated OE Equivalent Rotor line. The 08.5366.21 is engineered to match OEM specifications while adding a protective coating on the braking plate surfaces and other exposed areas.

Key Features

• Part number: 08.5366.21
• Premium UV Coated OE Equivalent Rotor line
• Rear disc brake rotor for select BMW models
• Grey cast iron construction
• UV-coated rust-resistant surface
• Solid rotor design
• Centering diameter: 75 mm
• Outside diameter: 280 mm
• Nominal thickness: 10 mm
• Minimum thickness: 8.4 mm
• 5-lug fitment
• Fixing screws included
• Torque spec: 120 Nm

Product Details

Brembo’s UV Coated rotor line is made for drivers who want an OE-equivalent replacement with added surface protection. The solvent-free UV coating helps protect the rotor from corrosion, including the braking plate surfaces, while the grey cast iron material supports quiet operation and reduced vibration where applicable. Intelligent marking locations identify the part number and minimum thickness for easier service checks. For restored braking performance, replace rotors and pads together and pair this rotor with Brembo NAO/Ceramic or Low Met brake pad formulations.

This part cross-references Centric Parts 120.34030 for the same application.

What It Helps Address

• Brake pulsation from worn rear rotors
• Noise caused by rotor wear or surface irregularity
• Corrosion on exposed rotor surfaces
• Reduced braking consistency from rotor thickness loss
• Service issues on BMW rear brake maintenance

Installation Notes

Verify rotor diameter, thickness, and hub dimensions before installation. Clean the hub mounting surface, confirm the fixing screw location, and torque fasteners to the specified 120 Nm where applicable. For best braking balance, install new pads with the rotor and inspect caliper hardware and brake fluid condition during service.

Quality Assurance

Brembo develops this rotor as a direct replacement that meets or exceeds OEM specifications. The UV-coated finish, cast iron construction, and thickness markings are intended to support reliable service and straightforward inspection on BMW rear brake applications.