Monroe 911021 Shock Absorber - Rear

Monroe Reflex Light Truck Shock Absorber 911021

Monroe Reflex Light Truck Shock Absorber 911021 is a rear suspension shock absorber for light trucks and SUVs that need controlled damping at the back of the vehicle. It is built for higher center-of-gravity applications and uses ASD valving technology to react to impact changes and help manage body motion.

Key Features

• ASD valving technology automatically adjusts damping response to changing road inputs
• Rear shock absorber for light truck and SUV suspension service
• Helps reduce vehicle roll and dive during braking and cornering
• Compressed length: 14.5 in; extended length: 24 in; travel length: 9.5 in
• Metal dust shield included for added protection
• Lower mount: loop bushing and sleeve mount, 9/16 in sleeve ID x 1.5/8 in sleeve OAL
• Upper mount: cross pin mount, closed ended, 5/16 in hole ID, 2.7/8 in pin length

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 Chevrolet Blazer, Chevrolet S10, GMC Jimmy, GMC Sonoma, Oldsmobile Bravada, Isuzu Hombre, Chevrolet S10 Blazer, and GMC S15 applications. Part number 911021 uses Monroe’s ASD valving to respond to road impact changes and maintain more consistent control over rear suspension motion. This part cross-references Rancho RS55124 for the same application.

What It Helps Address

• Excessive rear-end bounce over rough pavement
• Body roll during lane changes and turns
• Nose dive and rear instability during braking transitions
• Worn or leaking rear shock absorber replacement needs
• Reduced control in rear suspension movement on light truck platforms

Installation Notes

Verify mount style, compressed length, extended length, and sleeve dimensions before installation. This rear shock uses a loop bushing and sleeve lower mount with a cross pin upper mount, so matching the existing suspension hardware and mounting points is important for proper fitment. Confirm vehicle configuration notes such as Sport Package, ZR2 High Rider Package, or similar exclusions listed for your application before ordering.

Quality Assurance

Monroe Reflex Light Truck Shock Absorber 911021 is backed by Monroe’s limited lifetime warranty on the listed applications. It is engineered for rear suspension service on 1982-2005 Chevrolet, GMC, Oldsmobile, and Isuzu models with confirmed fitment.