KYB KG5406 Shock Absorber - Front

KYB Gas-a-Just Front Shock Absorber

The KYB Gas-a-just KG5406 is a front suspension shock absorber built for Ford trucks and vans that need firmer control, quicker response, and stable damping under load. It uses a monotube design with separate gas and oil chambers to reduce fade and maintain consistent performance during everyday driving, towing, and hauling.

Fits 1965-1991 Ford F-100, front; fits 1965-1979 Ford F-250, front; fits 1967-1979 Ford F-350, front; fits 1967-1977 Ford Bronco, front; and fits 1975-1991 Ford E-250 Econoline, front.

Gas-a-Just Line Details

KYB Gas-a-just shocks are tuned for vehicles that work harder than a standard passenger car. The monotube layout provides an air-free hydraulic working area for response and control, while the high-pressure nitrogen chamber helps the shock react quickly when road conditions change. For Ford F-100, F-250, F-350, Bronco, and Econoline front suspension applications, that means more controlled handling without giving up normal-road comfort.

• Monotube shock absorber design for consistent damping
• Up to 25% more damping performance over original equipment shocks
• High-pressure nitrogen gas separates from the oil for fade-resistant operation
• Triple chrome plated piston rod helps reduce seal wear
• Engineered for Ford truck and van applications
• Improves steering response with quicker gas pressure reaction
• Supports vehicles used for towing, hauling, and larger tire and wheel setups

What This Shock Absorber Helps Address

• Excessive front-end bounce on rough roads
• Reduced control during braking or steering input
• Shock fade from heat and aeration during extended use
• Loose or unsettled ride quality on Ford trucks and vans
• Wear-related fluid leakage from seal wear

Installation Notes

KG5406 is a front-position shock absorber with compressed length 10.67 in., extended length 16.06 in., and stroke length 5.39 in. It uses lower mount type E2(12.8X38) and upper mount type S1, and a dust cover is included. Verify mount style and dimensions against the vehicle before installation. This part cross-references Monroe Shocks & Struts (e.g., 34900) for the same application.

Quality Assurance

KYB designs Gas-a-just shocks with application-specific valving for Ford trucks and a monotube construction that separates gas and oil for stable performance. The triple chrome plated piston rod is used to help reduce seal wear and support long-term operation in demanding front suspension service.