KYB KG5454 Shock Absorber - Rear

KYB Gas-a-just Rear Shock KG5454

The KYB Gas-a-just KG5454 is a monotube suspension shock absorber built for rear applications that need firmer control, quicker response, and consistent damping. It is a strong match for heavy-duty use on Chevrolet P30 and GMC P3500 motorhome chassis, as well as Ford Bronco II and Ranger rear suspension upgrades.

Gas-a-just shocks use separate gas and oil chambers to reduce fade and maintain response under load. For drivers of a Chevrolet P30, GMC P3500, Ford Bronco II, or Ford Ranger, this design helps deliver more controlled rear suspension behavior during towing, hauling, and everyday driving.

Key Features

• Monotube design with separate gas and oil chambers for fade-resistant operation
• Up to 25% more damping performance over original equipment shocks
• Higher gas pressure for quicker steering response and improved control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Built for heavy-duty trucks, work vehicles, and larger tire and wheel setups
• Dust cover included
• Lower mount type: E2 (10x38); upper mount type: E1
• Compressed length: 14.49 in; extended length: 22.83 in; stroke length: 8.35 in

Product Details

The Gas-a-just line is KYB’s performance-oriented monotube shock absorber series. KG5454 uses a high-pressure nitrogen gas charge and an air-free hydraulic working area to deliver immediate damping response without the aeration issues common in twin-tube designs. That makes it a practical rear shock choice for vehicles that work hard, including Chevrolet P30 and GMC P3500 motorhome chassis and Ford Ranger or Bronco II rear suspension applications.

This part cross-references Monroe Shocks & Struts 37013 for the same application.

What It Helps Address

• Excessive rear-end bounce over rough pavement
• Reduced control when towing or carrying heavy loads
• Shock fade during extended driving or demanding use
• Delayed response from worn OE-style dampers
• Rear suspension instability on vehicles with larger tires and wheels

Installation Notes and Tips

Fits 1985-1999 Chevrolet P30, rear; 1985-1999 GMC P3500, rear; 1989 Ford Bronco II, rear; 1989 Ford Ranger, rear; 1984-1988 Ford Bronco II, rear; and 1983-1988 Ford Ranger, rear. Review the listed notes before ordering, including Mor/Ryde service number U01095 for the Chevrolet P30 and GMC P3500 applications and the High Ryder exclusion on select Ford Ranger fitments.

Verify compressed length, extended length, and mount style against the vehicle’s existing shock before installation. This rear shock absorber uses an E2 lower mount and E1 upper mount, so matching the original mounting configuration is important for proper fitment.

Quality Assurance

KYB designs the Gas-a-just line for direct damping response, reduced fade, and durable seal performance in demanding suspension applications. The monotube construction and high-pressure gas charge are intended to maintain consistent control in vehicles that see work-duty or load-bearing use.