KYB 344413 Shock Absorber - Rear

KYB Excel-G Rear Shock for Super Duty

The KYB Excel-G 344413 is a rear suspension shock absorber built to restore original ride control, stability, and handling on select Ford Super Duty trucks. It is a direct OE-style replacement for drivers who want consistent damping performance on a 2003-2004 Ford F-250 Super Duty or 2003-2004 Ford F-350 Super Duty.

Key Features

• KYB recommended OE replacement shock for factory-style performance
• Nitrogen gas-charged, twin-tube design for controlled damping
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Strong strut body and bracket construction helps minimize flex and maintain alignment
• Dust cover included
• Part number 344413

Excel-G Product Line Details

KYB Excel-G shocks and struts are calibrated to restore the vehicle’s original suspension behavior rather than change it. Built on KYB OE assembly lines with OE-quality components, the Excel-G line is classified as Original Equipment for the Aftermarket and is commonly selected for repair work where factory ride quality and control are the goal. The KYB 344413 follows that OE-focused approach for rear suspension service on Super Duty applications.

Detailed Description

Compatible with 2003-2004 Ford F-250 Super Duty, rear, and 2003-2004 Ford F-350 Super Duty, rear, this KYB shock absorber is engineered to support proper ride control during braking, lane changes, and uneven-road driving. The 344413 uses a twin-tube gas-charged design with OE-calibrated valving to help keep the suspension working as the manufacturer intended. This part cross-references Monroe Shocks & Struts 34687 for the same application.

What It Helps Address

• Excessive rear-end bounce after bumps
• Reduced stability during braking or cornering
• Loose or unsettled handling on rough pavement
• Uneven tire contact caused by worn damping control
• Oil seepage or leakage from an aging shock absorber

Installation Notes and Tips

Fits 2003-2004 Ford F-250 Super Duty, rear, and 2003-2004 Ford F-350 Super Duty, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions where specified. Verify mount style and dimensions before installation: compressed length 16.73 in., extended length 28.74 in., stroke length 12.01 in., lower mount type E2(12X38), upper mount type E1. Professional installation and a post-repair alignment check are recommended when suspension components are serviced.

Quality Assurance

KYB supplies shocks and struts to new vehicle manufacturers, and the Excel-G line is built on the same OE assembly lines using OE-quality components. The 344413 is designed to restore original suspension performance for Ford F-250 Super Duty and Ford F-350 Super Duty rear applications.