MPA Electrical BR77117G Disc Brake Rotor - Rear

Overview of MPA Electrical Black Series Coated Rotor BR77117G

The MPA Electrical Black Series Coated Rotor BR77117G is designed specifically for Mazda CX-9 models, providing reliable braking performance with enhanced corrosion resistance. This solid disc brake rotor features a coated finish to help extend its service life under various driving conditions.

• Compatible with Mazda CX-9 vehicles
• Part number BR77117G for precise identification
• Coated disc and hat finish for rust resistance
• Solid rotor design with smooth surface type
• Standard replacement grade for everyday use
• Discard thickness: 0.35 inches (9.0 mm)
• Nominal thickness: 0.43 inches (11.0 mm)
• Five mounting bolt holes with 0.524 inch (13.3 mm) diameter
• Does not include ABS tone ring or bearings

Product Line Details: Black Series Coated Rotor

The Black Series Coated Rotor line by MPA Electrical focuses on providing rotors with a protective coating on both the disc and hat surfaces. This coating helps reduce rust and corrosion, which is particularly beneficial for vehicles like the Mazda CX-9 that may be exposed to moisture and road salt. The Black Series rotors are designed as standard replacement parts, ensuring compatibility and reliable performance without requiring additional modifications.

Technical Description and Specifications

This disc brake rotor is a solid type with a smooth surface finish, optimized for consistent braking response. The nominal thickness of 0.43 inches (11.0 mm) ensures durability, while the discard thickness of 0.35 inches (9.0 mm) indicates when the rotor should be replaced to maintain safe braking performance. The rotor features five mounting bolt holes with a diameter of 0.524 inches (13.3 mm), matching the Mazda CX-9's specifications. Both the disc and hat are coated to resist rust, extending the rotor's lifespan in harsh environments. This rotor does not include an ABS tone ring or bearings, so it is intended for direct replacement where those components are not integrated.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Mazda CX-9
• Addresses rotor corrosion and rust buildup
• Improves braking smoothness and reduces noise
• Restores proper rotor thickness for safe braking
• Suitable for standard driving conditions requiring reliable stopping power

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it meets the nominal thickness specifications. Clean the mounting surface and verify the bolt hole alignment matches the Mazda CX-9 hub. Since this rotor does not include bearings or an ABS tone ring, reuse existing components if applicable. Proper torque specifications should be followed when securing the rotor to avoid warping or uneven wear.

Quality Assurance and Warranty

The MPA Electrical Black Series Coated Rotor BR77117G is a new, standard replacement part manufactured to meet OEM specifications for the Mazda CX-9. The coated finish provides additional protection against rust, contributing to longer service life. Warranty details are subject to the manufacturer's terms and conditions.