KYB KG5408 Shock Absorber - Front

KYB Gas-a-Just Front Shock Absorber

The KYB Gas-a-Just KG5408 is a monotube front shock absorber built for Chevrolet and GMC trucks and SUVs that need firmer control than a standard twin-tube design. It uses separate gas and oil chambers for quick response, reduced fade, and consistent damping on the road or under load.

Key Features

• Monotube design separates gas and oil for fade-free operation and immediate response
• Provides up to 25% more damping performance than original equipment shocks
• Valving and components are tuned specifically for GM truck applications
• Higher gas pressure improves steering response and front-end control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Dust cover included for added protection
• Fits front suspension applications on Chevrolet Blazer, K5 Blazer, K10, K20, GMC Jimmy, and related GM trucks and Suburbans

Product Details

Gas-a-Just shocks are designed for vehicles that work, tow, or run larger tires and wheels. The KG5408 uses a high-pressure monotube layout with an air-free hydraulic working area and a separate nitrogen gas chamber, which helps maintain consistent damping as conditions change. That makes it a practical upgrade for drivers looking for tighter front-end control on a Chevrolet Blazer or GMC Jimmy, as well as classic GM K-series trucks and Suburbans. This part cross-references Monroe Shocks & Struts 37042 for the same application.

What It Helps Address

• Excessive front-end bounce over bumps and rough pavement
• Reduced steering response during braking or lane changes
• Shock fade from heat and aeration during demanding driving
• Front suspension instability on trucks with heavier tires and wheels
• Wear related to fluid leakage and seal deterioration

Installation Notes and Fitment

Fits 1987-1991 Chevrolet Blazer, front; 1973-1974 Chevrolet Blazer, front; 1987-1988 Chevrolet V10 Suburban, front; 1987-1988 Chevrolet V20 Suburban, front; 1987 Chevrolet V10, front; 1987 Chevrolet V20, front; 1980-1986 Chevrolet K10, front; 1975-1986 Chevrolet K10, front; 1980-1986 Chevrolet K10 Suburban, front; 1973-1986 Chevrolet K10 Suburban, front; 1980-1986 Chevrolet K20, front; 1975-1986 Chevrolet K20, front; 1980-1986 Chevrolet K20 Suburban, front; 1973-1986 Chevrolet K20 Suburban, front; 1980-1986 Chevrolet K5 Blazer, front; 1975-1986 Chevrolet K5 Blazer, front; 1989-1991 Chevrolet V1500 Suburban, front; 1989-1991 Chevrolet V2500 Suburban, front; 1987-1991 GMC Jimmy, front; 1987-1991 GMC V1500 Suburban, front; 1987-1991 GMC V2500 Suburban, front; 1987 GMC V1500, front; 1987 GMC V2500, front; 1980-1991 GMC Jimmy, front; 1980-1986 GMC K1500, front; 1979-1986 GMC K1500, front; 1980-1986 GMC K1500 Suburban, front; 1979-1986 GMC K1500 Suburban, front; 1980-1986 GMC K2500, front; 1979-1986 GMC K2500, front; 1980-1986 GMC K2500 Suburban, front; 1979-1986 GMC K2500 Suburban, front; 1970-1972 GMC Jimmy, front; 1969-1972 Chevrolet Blazer, front; 1969-1972 Chevrolet K10 Suburban, front; 1969-1972 Chevrolet K20 Suburban, front.

Installation should follow the vehicle-specific mounting style listed for the application, including E2 lower and upper mount dimensions. Verify compressed length, extended length, and stroke against the original shock before installation. Some listed vehicles note dual front shock configurations, so confirm whether the application uses the outside shock or a non-dual-shock setup.

Quality Assurance

KYB designs the Gas-a-Just line for direct suspension control on GM truck platforms, with monotube construction that supports consistent damping and reduced fade. The KG5408 is engineered to maintain front suspension performance on vehicles that rely on stable braking, steering, and chassis control.