KYB KG5488 Suspension Shock Absorber - Rear

KYB Gas-a-Just Rear Shock Absorber

The KYB Gas-a-Just KG5488 is an OE-style monotube shock absorber built for rear suspension service on select Chevrolet and GMC heavy-duty applications. It is designed to restore control, improve response, and maintain consistent damping for vehicles that work, tow, or run larger wheels and tires.

For Chevrolet G30 and GMC G3500 rear suspension service, this KYB Gas-a-Just shock absorber uses a high-pressure monotube design to separate gas and oil for stable performance and quick reaction to road inputs.

Key Features

• Up to 25% more damping performance than original equipment shocks
• Monotube construction with separate gas and oil chambers for fade-resistant operation
• High gas pressure improves steering response and suspension control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Designed specifically for GM truck applications
• Dust cover included
• Lower mount type: E2 (12.8 x 43)
• Upper mount type: E2 (12.8 x 43)

Detailed Description

KYB Gas-a-Just KG5488 is engineered as a direct OE monotube replacement for rear suspension use on 1978-1995 Chevrolet G30 and 1978-1995 GMC G35/G3500 applications listed below. The design uses an air-free hydraulic working area for control and a separate high-pressure nitrogen gas chamber with a floating piston to deliver responsive damping during normal driving and added performance when load demands increase. This makes it a practical choice for Chevrolet G30 and GMC G3500 rear shock replacement where consistent control matters.

Part number KG5488 is suited to vehicles that see towing, hauling, or heavier wheel-and-tire setups, and it is cross-referenced to Monroe Shocks & Struts 34929 for the same application.

What It Helps Address

• Excessive rear bounce after bumps or dips
• Reduced control when carrying cargo or towing
• Soft or inconsistent damping from worn OE shocks
• Delayed steering response caused by tired suspension components
• Fluid leakage related to seal wear

Installation Notes and Fitment

• Fits 1978-1995 Chevrolet G30, rear, recommended OEM replacement; exc. motorhome chassis; w/ dual rear wheels
• Fits 1978 GMC G35, rear, recommended OEM replacement; exc. motorhome chassis; w/ dual rear wheels
• Fits 1979-1992 GMC G3500, rear, recommended OEM replacement; exc. motorhome chassis; w/ dual rear wheels
• Fits 1993-1995 GMC G3500, rear, recommended OEM replacement; exc. motorhome chassis; except heavy duty chassis; w/ dual rear wheels

Verify mount style, compressed length, extended length, and stroke before installation. KG5488 measures 15.2 inches compressed, 24.57 inches extended, with a 9.37-inch stroke. Confirm rear-position application and chassis notes before ordering.

Quality Assurance

KYB designs Gas-a-Just shocks as OE replacement components for vehicles that require controlled damping and stable suspension response. The monotube layout, high-pressure gas charge, and chrome piston rod construction are used to support consistent operation in demanding rear suspension service.