Brembo 09.N285.21 Disc Brake Rotor - Front

Brembo UV Coated Front Rotor

The Brembo 09.N285.21 is a premium UV coated disc brake rotor built as a direct OE-style replacement for front brake service. It is engineered for 2013-2018 Cadillac ATS front applications, including 2013-2016 Cadillac ATS models with Brembo brakes, and uses a vented high-carbon design for stable braking performance.

The UV-coated surface helps protect the rotor from corrosion on exposed areas, while the high-carbon cast iron construction, where applicable, helps reduce noise and vibration. The rotor also includes a fixing screw kit and intelligent marking locations for part number and minimum thickness identification.

Key Features

• Part number: 09.N285.21
• Premium UV coated rust-resistant surface
• High carbon material for improved noise and vibration control
• Vented disc brake rotor design
• Outside diameter: 321 mm
• Nominal thickness: 30 mm
• Minimum thickness: 27 mm
• Centering diameter: 70.8 mm
• 5-lug fitment
• Fixing screws included

Product Details

Brembo’s Premium UV Coated OE Equivalent Rotor line is built for drivers who want a direct replacement rotor that follows OEM-level specifications. On the Cadillac ATS, this front rotor supports consistent pedal feel and braking response while the UV coating helps protect the braking plate surfaces from corrosion. The vented construction and high-carbon composition, where applicable, are selected to support quieter operation and smoother braking under everyday driving conditions. This part cross-references Centric Parts (e.g., 121.62138, 125.62138) for the same application.

What This Rotor Helps Address

• Brake pulsation from worn or uneven rotor surfaces
• Noise caused by rotor wear or material instability
• Corrosion on exposed rotor surfaces
• Reduced braking consistency from rotor thickness loss
• Front brake service needs on Cadillac ATS models

Installation Notes

Verify rotor dimensions, hub fitment, and brake package before installation. This rotor is listed for the front position on 2013-2018 Cadillac ATS, with a separate fitment note for 2013-2016 Cadillac ATS models equipped with Brembo brakes. For best braking restoration, replace rotors and pads together and follow proper bedding procedures after installation. The included fixing screw kit supports straightforward installation.

Quality Assurance

Brembo manufactures this rotor as an OE-equivalent replacement with UV coating, intelligent wear marking locations, and application-specific engineering for the Cadillac ATS front brake system. Part number 09.N285.21 is built to meet or exceed OEM specifications for the listed applications.