KYB SM5939 Suspension Shock Absorber Mount - Rear Upper

KYB Rear Upper Strut Mount for Mazda

KYB SM5939 is a rear upper suspension shock absorber mount built for select Mazda applications. It replaces worn vibration insulators that can transmit noise and harshness into the cabin, while helping restore proper suspension isolation and steering feel.

Key Features

• OE-quality replacement strut mount from KYB Mount Components
• Helps reduce road noise, vibration, and impact harshness from worn mounts
• Rear upper mount design for the listed Mazda fitments
• Supports suspension performance and alignment stability
• Part number SM5939 for easy identification

Detailed Description

KYB SM5939 is engineered as a direct replacement suspension shock absorber mount for the rear upper position on select Mazda vehicles. KYB designs its Mount Components line to replace hardened insulators that no longer isolate vibration effectively. On applications such as the Mazda CX-5, Mazda CX-9, and Mazda 6, a worn mount can add clunks, vibration, and extra cabin noise; this replacement helps return the suspension to proper operation. This part cross-references Monroe Shocks & Struts (e.g., GBJD28380) for the same application.

Compatible With 2019-2024 Mazda CX-5, rear upper; 2019-2023 Mazda CX-9, rear upper; and 2018-2021 Mazda 6, rear upper. KYB SM5939 is a practical choice when servicing the rear suspension on these Mazda models and is identified by part number SM5939.

What It Helps Address

• Rear suspension noise from worn upper mounts
• Excess vibration transferred into the vehicle body
• Harshness over bumps caused by deteriorated insulators
• Reduced suspension isolation at the rear upper mount
• Alignment and steering feel concerns related to mount wear

Installation Notes and Tips

Install on the rear upper suspension position only for the listed Mazda applications. Inspect the surrounding strut and suspension components during service, and verify vehicle fitment by year, make, model, and position before installation. Follow the vehicle service manual for torque specifications and replacement procedures.

Quality Assurance

KYB is known for OE-style replacement suspension components, and the Mount Components line is built to match application-specific requirements for fit and function.