KYB KG54104 Suspension Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for GM and Dodge Trucks

The KYB Gas-a-just KG54104 is a rear monotube shock absorber built for trucks that need firmer control, quicker response, and stable damping under load. It is a direct OE-style replacement for select Chevrolet Silverado 1500, GMC Sierra 1500, and Dodge Ram 1500/2500/3500 applications.

Gas-a-just is KYB’s performance shock line for vehicles that work, tow, or run larger tires and wheels. The monotube design separates gas and oil for consistent operation, while the higher gas pressure helps the shock react quickly when road conditions change.

Key Features

• Part number KG54104 rear suspension shock absorber
• Monotube design with separate gas and oil chambers for fade-resistant damping
• Up to 25% more damping performance than original equipment shocks
• Triple chrome plated piston rod helps reduce seal wear
• Designed for GM truck applications with valving tuned for truck use
• Dust cover included
• Compressed length: 15.28 in; extended length: 24.33 in; stroke length: 9.06 in
• Lower mount type: E2 (14.6 x 42); upper mount type: E2 (14.6 x 42)

Detailed Description

The KYB Gas-a-just KG54104 is engineered for rear suspension control on full-size trucks that see daily driving, towing, hauling, or heavier wheel and tire setups. Its high-pressure monotube construction keeps the hydraulic and gas sections separate, which supports consistent damping response and helps reduce fade during repeated suspension movement. For shoppers searching for a rear shock absorber for 2004-2006 Chevrolet Silverado 1500, 2004-2006 GMC Sierra 1500, or 1994-2002 Dodge Ram 2500 rear applications, this part offers a focused OE replacement or performance upgrade path. This part cross-references Monroe Shocks & Struts 911504 for the same application.

What It Helps Address

• Excessive rear bounce after bumps or dips
• Reduced control when towing or carrying heavier loads
• Soft or inconsistent damping from worn OE shocks
• Rear-end instability on trucks with larger tires and wheels
• Delayed steering response caused by tired suspension components

Installation Notes and Tips

Verify rear fitment by year, make, model, and suspension options before installation. This shock fits rear positions only and excludes certain electronic suspension and Quadrasteer applications listed in the fitment data. Confirm compressed length, extended length, and mount style against the original shock before removal. Fits 2007 Chevrolet Silverado 1500 Classic, rear; Fits 2007 GMC Sierra 1500 Classic, rear; Fits 2004-2006 Chevrolet Silverado 1500, rear; Fits 2004-2006 GMC Sierra 1500, rear; Fits 2001-2003 Chevrolet Silverado 1500, rear; Fits 2001-2003 GMC Sierra 1500, rear; Fits 1994-2002 Dodge Ram 2500, rear; Fits 1994-2002 Dodge Ram 3500, rear; Fits 1994-2001 Dodge Ram 1500, rear; Fits 1999-2000 Chevrolet Silverado 1500, rear; Fits 1999-2000 GMC Sierra 1500, rear.

Quality Assurance

KYB designs Gas-a-just shocks with monotube construction and truck-specific valving to maintain consistent damping performance. The KG54104 uses a triple chrome plated piston rod and a high-pressure gas design to support long-term seal durability and responsive operation.