Monroe 5681 Shock Absorber - Rear

Monroe OESpectrum Rear Shock Absorber

The Monroe OESpectrum Passenger Car Shock Absorber is built to restore factory-style drivability and road control while reducing noise, vibration, and harshness. Monroe 5681 is a rear shock absorber for select BMW sport suspension applications, including BMW 328i, 335i, and 128i models.

Key Features

• OESpectrum passenger car shock absorber tuned for OE-style ride control
• Rear application for select BMW sport suspension setups
• Stem mount upper and lower mounting design with M10 thread pitch
• Compressed length: 11.35 in; extended length: 19.69 in
• Travel length: 6.01 in for suspension movement control
• No dust shield, no compressed bumper stop, and no extended hydraulic lockout

Product Details

Monroe 5681 is engineered for drivers who want original-equipment handling characteristics without changing the vehicle’s suspension layout. The OESpectrum line focuses on precise damping response and reduced harshness, making it a practical choice for BMW rear suspension service where ride quality and control matter. This part cross-references Monroe Shocks & Struts (e.g., 311410, TS3231092B) for the same application.

Compatible With select BMW rear applications, including 2006 BMW 325i rear, 2006 BMW 330i rear, 2007-2014 BMW 328i rear with Sport Suspension and without Electronic Adjustable Suspension, 2007-2013 BMW 335i rear with Sport Suspension and without Electronic Adjustable Suspension, 2011-2013 BMW 335is rear with Sport Suspension and without Electronic Adjustable Suspension, 2008-2013 BMW 128i rear with Sport Suspension, 2008-2013 BMW 135i rear with Sport Suspension, 2013 BMW 135is rear with Sport Suspension, 2014 BMW 328d rear, and 2014 BMW 328d xDrive rear.

What It Helps Address

• Excessive rear-end bounce over uneven pavement
• Loose or unsettled handling in sport suspension BMW applications
• Noise and harshness from worn rear shock absorbers
• Reduced damping control during braking and cornering
• Factory ride quality loss from aging OE shocks

Installation Notes and Tips

Verify rear fitment by year, model, and suspension configuration before installation. Monroe 5681 uses stem mount upper and lower attachment points with M10 thread pitch, so confirm the mounting style matches the vehicle’s original setup. For best results, inspect related suspension components such as mounts and bushings during replacement.

Quality Assurance

Monroe OESpectrum shocks are designed around OE-style performance targets for controlled handling and consistent ride response. Monroe 5681 is a direct-fit rear shock absorber for the listed BMW applications, supporting a factory-correct replacement approach for BMW 328i, 335i, and related rear suspension service.