Monroe 911039 Shock Absorber - Rear

Monroe Reflex Light Truck Shock Absorber 911039

The Monroe Reflex Light Truck Shock Absorber 911039 is built for rear suspension service on Ford trucks with a higher center of gravity. It uses ASD valving technology that reacts to changing road inputs to help control body motion, reduce roll, and limit dive during braking and cornering.

Key Features

• Monroe Reflex Light Truck Shock Absorber line for rear suspension applications
• ASD valving automatically adjusts damping response to road conditions
• Metal dust shield included to help protect the shock shaft area
• Extended length: 26.375 in.; compressed length: 15.75 in.; travel length: 10.625 in.
• Upper mount: loop bushing mount with 5/8 in. bushing ID and 1.5/16 in. bushing OAL
• Lower mount: LS26 loop bushing and sleeve mount with 12 mm sleeve ID and 1.1/2 in. sleeve OAL
• Cross-references Monroe Shocks & Struts 172286 and 182286 for the same application
• Part number 911039 for rear shock absorber replacement

Detailed Description

Monroe 911039 is a rear suspension shock absorber for Ford F-150, Ford F-250, Ford F-350, Ford F-250 HD, and Ford F-350 Super Duty applications listed below. The Reflex Light Truck Shock Absorber line is tuned for trucks with a higher center of gravity, using ASD valving to respond to suspension movement and help keep the vehicle settled under load transfer, braking, and uneven pavement. This part number 911039 is a direct-fit style replacement for rear shock service where the listed mounting dimensions match the vehicle.

Compatible With 1999-2016 Ford F-350 Super Duty, rear; 1997 Ford F-250 HD, rear; 1985-1997 Ford F-350, rear; 1990-1996 Ford F-150, rear; and 1992-1996 Ford F-250, rear. Monroe 911039 is a practical choice when replacing a worn rear shock on Ford F-150 and Ford F-350 platforms that need controlled ride response without changing the original suspension layout.

What It Helps Address

• Excessive rear-end bounce after bumps or dips
• Body roll during lane changes or cornering
• Nose dive under braking
• Loose or unsettled rear suspension feel
• Reduced damping performance from a worn shock absorber

Installation Notes and Tips

Verify rear fitment by matching the listed year, model, and mounting dimensions before installation. Confirm the upper loop bushing mount and lower LS26 loop bushing and sleeve mount against the existing shock hardware on the vehicle. Check compressed and extended length measurements to ensure proper suspension travel and avoid overextension or bottoming out.

Quality Assurance

Monroe Reflex Light Truck Shock Absorber 911039 is engineered for the listed Ford rear applications and uses ASD valving technology to manage damping response across changing road conditions. The fitment notes supplied for several applications reference a limited lifetime warranty on this shock absorber.