KYB KG5451 Shock Absorber - Rear

KYB Gas-a-just Rear Shock for GM S-Series

The KYB Gas-a-just KG5451 is a rear monotube shock absorber built for GM S-Series trucks and SUVs that need firmer control without sacrificing everyday ride quality. It uses separate gas and oil chambers for quick response, reduced fade, and consistent damping on the road.

Key Features

• Monotube design delivers up to 25% more damping performance than original equipment shocks
• High-pressure nitrogen gas and hydraulic working chambers separate gas from oil for fade-free operation
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Higher gas pressure improves steering response and suspension control
• Designed specifically for GM S-Series rear applications, including Chevrolet S10, GMC Sonoma, GMC Jimmy, and Oldsmobile Bravada
• Dust cover included

Product Details

The Gas-a-just line is KYB’s monotube shock absorber series for drivers who want more controlled suspension response than a traditional twin-tube design. For rear suspension service on Chevrolet S10, GMC Sonoma, GMC Jimmy, and related GM S-Series platforms, the KG5451 uses a high-pressure monotube layout that keeps the gas and oil separated, helping maintain consistent damping during normal driving and under heavier load conditions. This part number, KG5451, is a direct-fit rear shock option for a wide range of 1982-2005 GM S-Series applications.

This part cross-references Monroe Shocks & Struts (e.g., 911517) for the same application.

What It Helps Address

• Excessive rear-end bounce over bumps and uneven pavement
• Reduced control when towing or carrying heavier loads
• Shock fade from heat and aeration during extended driving
• Loose or delayed steering response caused by worn rear damping
• Ride instability on GM S-Series vehicles with larger, heavier tires and wheels

Installation Notes and Fitment

Fits 2005 Chevrolet Blazer, rear; 2005 GMC Jimmy, rear; 2004 Chevrolet S10, rear; 2004 GMC Jimmy, rear; 2004 GMC Sonoma, rear; 2003 Chevrolet S10, rear; 2003 GMC Sonoma, rear; 2001 Oldsmobile Bravada, rear; 2000 Isuzu Hombre, rear; 1995-2003 Chevrolet S10, rear; 1995-2003 GMC Sonoma, rear; 1995-2005 Chevrolet Blazer, rear; 1995-2005 GMC Jimmy, rear; 1996-2001 Oldsmobile Bravada, rear; 1996-2000 Isuzu Hombre, rear; 1995-2004 Chevrolet S10, rear; 1994-2004 GMC Sonoma, rear; 1992-1994 GMC Jimmy, rear; 1991-1994 GMC Sonoma, rear; 1983-1994 Chevrolet S10 Blazer, rear; 1983-1991 GMC S15 Jimmy, rear; 1982-1994 Chevrolet S10, rear; 1982-1990 GMC S15, rear.

Rear installation on some applications requires following the manufacturer’s instructions for the suspension strut and coil spring assembly. Verify lower mount type E2(14.6X41), upper mount type E3(61.6X87X30), and extended/compressed length before installation. This KYB KG5451 is a rear shock absorber for GM S-Series fitments only.

Quality Assurance

KYB designs the Gas-a-just line with application-specific valving and monotube construction to support consistent damping performance on GM S-Series rear suspension systems. The KG5451 is engineered for direct replacement use where the listed fitment matches the vehicle.