Monroe 911278 Shock Absorber - Rear

Monroe Reflex Light Truck Shock Absorber 911278

Monroe Reflex Light Truck Shock Absorber 911278 is built for rear suspension service on higher-center-of-gravity vehicles. It uses ASD valving technology to react to road impact and help control body roll and dive on the Jeep Commander and Jeep Grand Cherokee.

Key Features

• ASD valving adjusts damping response as road conditions change
• Rear shock absorber for light truck and SUV suspension applications
• Metal dust shield helps protect the shaft area from debris
• Loop bushing and sleeve mounts at both ends for direct replacement fitment
• Extended length: 24.25 in; compressed length: 15.125 in; travel length: 9.125 in
• Upper mount: 12MM sleeve ID x 47.63MM sleeve OAL
• Lower mount: 1/2 in sleeve ID x 1.5 in sleeve OAL

Product Details

The Monroe Reflex Light Truck Shock Absorber line is tuned for vehicles that sit higher and carry more suspension movement, making it a practical choice for rear shock replacement on the Jeep Commander and Jeep Grand Cherokee. Part number 911278 uses Monroe’s ASD valving to respond to impact input and help maintain more controlled handling over uneven pavement, braking, and cornering transitions. This part cross-references Monroe Shocks & Struts (e.g., 344496, 554377) for the same application.

Common Issues This Part Can Address

• Excessive rear-end bounce after bumps
• Body roll during lane changes and turns
• Nose dive under braking
• Reduced control from worn rear shock absorbers
• Noise or harshness from deteriorated suspension damping

Installation Notes and Tips

Compatible With 2006-2010 Jeep Commander, rear, and 2005-2010 Jeep Grand Cherokee, rear. Verify compressed and extended length, mount style, and sleeve dimensions before installation to confirm proper suspension travel and fit. Inspect surrounding bushings, mounts, and hardware condition during shock replacement, and replace any worn components as needed for a complete repair. Part number 911278 is a rear shock absorber, so confirm the vehicle is being serviced at the rear position only.

Quality Assurance

Monroe positions the Reflex Light Truck Shock Absorber line for controlled damping on light truck and SUV applications. This part is backed by Monroe’s limited lifetime warranty as noted in the fitment data for the listed Jeep Commander and Jeep Grand Cherokee applications.