KYB KG54340 Shock Absorber - Front

KYB Gas-a-just Front Shock Absorber

The KYB Gas-a-just KG54340 is a front suspension shock absorber built as an OE monotube replacement for heavy-duty GM trucks and SUVs. It is designed to restore original ride control while adding quicker response for vehicles that tow, work, or run larger wheels and tires.

For Chevrolet Silverado 2500 HD, Silverado 3500 HD, GMC Sierra 2500 HD, and related applications, this Gas-a-just shock uses a high-pressure monotube design to separate gas and oil for consistent damping and fade-resistant operation.

Key Features

• Part number KG54340 for front suspension applications
• Monotube shock absorber with separate gas and oil chambers
• Up to 25% more damping performance than original equipment shocks
• High-pressure nitrogen gas for fast response and stable control
• Triple chrome plated piston rod helps reduce seal wear
• Dust cover included
• Designed specifically for GM truck applications

Product Details

The KYB Gas-a-just line is built for drivers who want OE-style ride quality with firmer control under load. Its air-free hydraulic piston and valve area deliver responsiveness, while the nitrogen gas chamber adds instant performance when suspension demand increases. That makes the KG54340 a practical choice for front-end control on Chevrolet Suburban 2500, Chevrolet Silverado 1500 HD, GMC Sierra 1500 HD, and other listed GM platforms.

This part cross-references Monroe Shocks & Struts 911501 for the same application.

What It Helps Address

• Excessive front-end bounce over rough pavement
• Reduced steering response during braking and cornering
• Shock fade during towing or heavy-duty use
• Ride instability from larger, heavier tires and wheels
• Fluid leakage related to worn shock seals

Installation Notes and Tips

Fits 2016-2019 Chevrolet Suburban 3500 HD, front; 2000-2013 Chevrolet Suburban 2500, front; 2007-2013 GMC Yukon XL 2500, front; 2005-2010 Chevrolet Silverado 2500 HD, front; 2007-2010 Chevrolet Silverado 3500 HD, front; 2005-2010 GMC Sierra 2500 HD, front; 2007-2010 GMC Sierra 3500 HD, front; 2007 Chevrolet Silverado 1500 HD Classic, front; 2007 Chevrolet Silverado 2500 HD Classic, front; 2007 Chevrolet Silverado 3500 Classic, front; 2007 GMC Sierra 1500 HD Classic, front; 2007 GMC Sierra 2500 HD Classic, front; 2007 GMC Sierra 3500 Classic, front; 2002-2006 Chevrolet Avalanche 2500, front; 2005-2006 Chevrolet Silverado 1500 HD, front; 2001-2006 Chevrolet Silverado 3500, front; 2005-2006 GMC Sierra 1500 HD, front; 2001-2006 GMC Sierra 3500, front; 2002-2006 GMC Yukon XL 2500, front; 1999-2004 Chevrolet Silverado 2500, front; 2001-2004 Chevrolet Silverado 2500 HD, front; 1999-2004 GMC Sierra 2500, front; 2001-2004 GMC Sierra 2500 HD, front; 2001-2003 Chevrolet Silverado 1500 HD, front; 2001-2003 GMC Sierra 1500 HD, front; 2000-2001 Chevrolet Suburban 2500, front; 2000-2001 GMC Yukon XL 2500, front; 2000 GMC Sierra 2500, front.

Verify mount style and suspension configuration before installation. This unit uses an E2(14.6X34) lower mount and S1 upper mount, with a compressed length of 11.06 inches, extended length of 15.59 inches, and stroke length of 4.52 inches. Notes in the fitment data exclude certain Autoride, Quadrasteer, electronic suspension, and related configurations.

Quality Assurance

KYB engineers the Gas-a-just line as an OE monotube replacement for GM truck and SUV suspension systems. The design focuses on controlled damping, reduced fade, and consistent response for demanding front suspension service.