KYB 344386 Shock Absorber - Rear

KYB Excel-G Rear Shock Absorber

The KYB Excel-G 344386 is a rear suspension shock absorber built to restore original ride control, stability, and handling on select Chevrolet Silverado 1500 Classic, Silverado 1500, GMC Sierra 1500 Classic, Sierra 1500, and heavy-duty GM truck applications. As an Excel-G unit, it is calibrated to return the vehicle to its designed damping performance rather than change the ride character.

KYB’s Excel-G line is an OE-style replacement series made on KYB assembly lines using OE-quality components. For drivers searching for a rear shock absorber for a 2001-2006 GMC Sierra 1500 or a 2004-2006 Chevrolet Silverado 1500, part number 344386 is built for direct suspension service on the listed rear applications.

Key Features

• KYB recommended OEM replacement shock for rear suspension service
• Nitrogen gas-charged twin-tube design for consistent damping response
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact and body motion
• Strong strut body and bracket construction helps minimize flex and maintain alignment
• Dust cover included
• Lower mount type: E2 (14.6 x 41)
• Upper mount type: E2 (14.6 x 41)
• Compressed length: 15.35 in; extended length: 25.79 in; stroke length: 10.44 in

Excel-G Product Line Details

The KYB Excel-G line is focused on restoring factory-style ride control for trucks and SUVs that need predictable damping, stable braking feel, and consistent lane-change response. This rear shock absorber uses OE-calibrated valving and OE-quality construction to match the suspension behavior the vehicle was originally engineered to deliver.

Detailed Description

KYB 344386 is an OEA-style replacement shock absorber for rear suspension applications on 1977-1986 Chevrolet K30, 1979-1986 GMC K3500, 1987-1988 Chevrolet V30, 1987-1991 GMC V3500, 1989-1991 Chevrolet V3500, 1999-2000 Chevrolet Silverado 1500, 1999-2000 GMC Sierra 1500, 2001-2006 Chevrolet Silverado 1500, 2001-2006 GMC Sierra 1500, 2004-2006 Chevrolet Silverado 1500, 2004 GMC Sierra 1500, and 2007 Chevrolet Silverado 1500 Classic / GMC Sierra 1500 Classic rear applications listed in the fitment data. This part cross-references Monroe Shocks & Struts (e.g., 37152) for the same application.

Use this shock absorber when the goal is to restore rear suspension control on a GM truck without changing the original tuning. The design supports proper tire contact, steering response, and body control, which is important for vehicles equipped with electronic safety systems that rely on suspension performance staying within factory parameters.

What It Helps Address

• Excessive rear bounce after bumps
• Reduced stability during braking or lane changes
• Loose or unsettled rear-end handling
• Uneven tire contact caused by worn damping
• Oil seepage or gas loss from an aging shock absorber

Installation Notes and Tips

• Compatible With rear-position applications only; verify the exact year, make, model, and notes before ordering.
• Some listed applications require replacement according to the manufacturer’s instructions for the suspension strut and coil spring assembly.
• Confirm mount style and dimensions against the original part: E2 upper and lower mounts, 15.35 in compressed length, 25.79 in extended length.
• Check for exclusions such as electronic suspension, Quadrasteer, HD, torsion bar front suspension, or Z71 notes where listed in the fitment data.
• For a 2001-2006 Chevrolet Silverado 1500 rear shock absorber or 2001-2006 GMC Sierra 1500 rear shock absorber, match the notes exactly to the vehicle configuration.

Quality Assurance

KYB manufactures Excel-G shocks on the same OE assembly lines used for original equipment production and uses OE-quality components with vehicle-specific damping calibration. The 344386 is built to support factory-style ride control and consistent suspension performance on the listed GM truck applications.