Monroe 34788 Shock Absorber - Rear

Monroe Gas-Magnum Rear Shock Absorber

The Monroe Gas-Magnum Shock Absorber 34788 is built for midsize and full-size trucks and vans that need firm rear suspension control without a harsh ride. It uses a larger fluid capacity than standard 1-inch bore shocks to improve efficiency and reduce operating effort.

Compatible with 1991-1998 Toyota Land Cruiser rear and 1996-1997 Lexus LX450 rear, this Monroe Gas-Magnum shock absorber is a direct-fit suspension service part for rear axle applications. The Monroe 34788 is also a fitment-focused option for owners searching for a rear shock absorber for Toyota Land Cruiser or Lexus LX450 suspension repair.

Key Features

• Gas-Magnum shock absorber for rear suspension applications
• Firm damping control with a ride quality suited to truck and van use
• Up to twice the fluid capacity of standard 1-inch bore shocks
• Metal dust shield for added protection
• Extended length: 23.25 in.
• Compressed length: 14.375 in.
• Travel length: 8.875 in.
• Upper mount: stem mount, 2.375 in. stem length, 3/8 in.-16 thread pitch
• Lower mount: loop bushing mount, 3/4 in. bushing ID x 1.9/16 in. bushing OAL

Product Details

Monroe’s Gas-Magnum product line is aimed at heavier-duty truck and van suspension needs, where consistent rear damping and load control matter. The Monroe 34788 shock absorber uses a design with greater fluid capacity to help it work more efficiently under demanding conditions. It includes an extended bumper stop and a metal dust shield, while the rear shock body dimensions and mounting style support the listed Toyota Land Cruiser and Lexus LX450 applications.

This part cross-references KYB KG54301 and Rancho RS55208 for the same application. Search terms such as Monroe 34788 rear shock absorber for 1991-1998 Toyota Land Cruiser and 1996-1997 Lexus LX450 rear suspension replacement are commonly used for this fitment.

What It Helps Address

• Excessive rear bounce over uneven pavement
• Reduced rear suspension control during load changes
• Harsh or unstable ride feel from worn shock absorbers
• Rear-end oscillation after bumps or dips
• Loss of damping performance in aging suspension systems

Installation Notes and Tips

Verify rear mounting style, compressed length, and extended length before installation. Confirm that the vehicle is equipped for the listed rear application, especially on 1996-1997 Lexus LX450 models without Automatic Leveling System. Inspect related bushings, mounts, and surrounding suspension components for wear before replacing the shock absorber.

Quality Assurance

Monroe Gas-Magnum shock absorbers are engineered for controlled rear suspension performance in truck and van applications. The Monroe 34788 is listed with limited lifetime warranty coverage on the referenced fitments.