KYB SM5250 Suspension Strut Mount Kit - Rear

KYB SM5250 Rear Strut Mount Kit

KYB SM5250 is a rear suspension strut mount kit for select BMW applications, including 1995-2003 BMW 740i, 1995-2001 BMW 740iL, 1997-2003 BMW 540i, and 2000-2003 BMW M5. It replaces worn mount components that can transmit vibration, noise, and harshness into the cabin.

Built as a KYB Mount Components part, this kit follows OE-style replacement standards for the specific application. It is a direct choice for BMW 540i rear strut mount replacement and BMW M5 rear suspension service where steering feel, alignment retention, and ride isolation matter.

Key Features

• OE-quality replacement strut mount for the listed rear applications
• Superior rubber helps reduce noise, vibration, and harshness
• Mount bearings support smoother steering response and help retain front-end alignment
• Matched-grade studs and nuts for application-specific service
• Designed to cushion road impacts and reduce jarring from worn mounts

Product Details

KYB Mount Components are engineered to replace hardened vibration insulators that no longer isolate the suspension properly. On rear suspension service, the mount helps absorb road shock before it reaches the body, while the bearing plate supports steering and alignment-related movement where applicable. KYB SM5250 is built for drivers servicing BMW rear suspension noise, vibration, or ride-quality concerns on E38 and E39 chassis applications.

This part cross-references Monroe Shocks & Struts 903920 for the same application.

Common Issues This Part Addresses

• Rear suspension noise over bumps or rough pavement
• Excess vibration transferred into the cabin
• Harsh ride feel from worn or hardened mount insulators
• Reduced steering smoothness from worn bearing components
• Alignment instability caused by deteriorated mount hardware

Installation Notes and Tips

Compatible With 1997-2003 BMW 540i, rear; 2000-2003 BMW M5, rear; 1995 and 1997-2001 BMW 740i, rear; and 1995-2001 BMW 740iL, rear, with the listed suspension notes. Verify chassis, suspension package, and electronic suspension exclusions before ordering. Inspect the surrounding strut and spring components during service, since worn mounts often appear alongside other rear suspension wear. KYB SM5250 should be installed according to the vehicle-specific service procedure.

Quality Assurance

KYB is known for OE-style suspension replacement parts, and the Mount Components line is focused on restoring factory-like ride control and noise isolation. The SM5250 is built to meet the application-specific requirements of the listed BMW rear suspension setups.