MPA Electrical BR77117G Disc Brake Rotor - Rear

Rear Brake Rotor for Mazda CX-9

The MPA Electrical Black Series Coated Rotor BR77117G is a rear disc brake rotor built for 2016-2023 Mazda CX-9 applications. It combines a coated finish with OE-style vane design to support consistent braking performance, smoother operation, and added corrosion resistance in demanding driving conditions.

Black Series Coated Rotor Details

The Black Series Coated Rotor line focuses on replacement rotors with practical protection and OE-style construction. On the BR77117G, the coated disc and coated hat help resist rust, while the smooth, solid rotor design supports stable rear braking performance. This rotor uses a standard replacement grade and is built as a new part for direct service use.

• Fits 2016-2023 Mazda CX-9, rear
• Part number BR77117G for rear brake service
• Coated disc finish and coated hat finish for rust resistance
• OE-style vane design for efficient cooling
• Smooth, solid rotor construction
• Standard replacement grade for routine brake repair
• 5 lug hole mounting pattern
• No ABS tone ring included

Detailed Product Description

MPA Electrical BR77117G is a rear disc brake rotor for the Mazda CX-9 that addresses common brake service needs with a coated surface and OE-style vane geometry. The design supports heat management during repeated stops, while the Q-Shield protective coating helps defend against rust exposure in harsh weather and high-temperature braking conditions. With a nominal thickness of 11.0 mm and discard thickness of 9.0 mm, this rotor is specified for replacement service where consistent rear braking and corrosion protection matter. If you are searching for a rear brake rotor for 2016 Mazda CX-9, 2017 Mazda CX-9, 2018 Mazda CX-9, 2019 Mazda CX-9, 2020 Mazda CX-9, 2021 Mazda CX-9, 2022 Mazda CX-9, or 2023 Mazda CX-9, BR77117G matches the listed fitment.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Rear brake pulsation from worn rotor surfaces
• Rust buildup on exposed brake rotor surfaces
• Reduced stopping consistency during repeated braking
• Noise or vibration associated with aged rear rotors
• Heat-related fade from a rotor that no longer manages cooling effectively

Installation Notes and Tips

Confirm rear axle fitment before ordering and compare the rotor dimensions to the removed part. Inspect pads, caliper hardware, and hub condition during brake service, and clean the hub mounting surface before installation to help prevent runout-related issues. Follow the vehicle manufacturer’s torque specifications and bedding procedure after installation.

Quality Assurance

MPA Electrical Black Series rotors use coated surfaces and OE-style vane design to support dependable replacement performance. The Q-Shield coating is engineered to resist rust exposure while maintaining protection under elevated brake temperatures.