KYB KG6199 Suspension Shock Absorber - Rear

KYB Gas-a-just Shock Absorber KG6199

The KYB Gas-a-just KG6199 is a monotube suspension shock absorber built for trucks and other demanding driving conditions. It delivers quicker response than a traditional twin-tube design and maintains consistent damping by separating gas and oil inside the shock body.

For drivers searching for a KYB Gas-a-just shock absorber for heavy-duty truck suspension service, this part is engineered to add control when towing, hauling, or running larger tires and wheels. It is also a direct replacement choice for select applications that cross-reference Monroe Shocks & Struts and Gabriel part numbers.

Key Features

• Adds up to 25% more damping performance over original equipment shocks
• Monotube construction separates gas and oil for fade-free operation and fast response
• High-pressure nitrogen gas helps improve steering response
• Components and valving are tuned for heavy-duty truck use
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Dust cover included
• Part number: KG6199

Product Details

The Gas-a-just line is KYB’s performance-oriented shock absorber series for vehicles that work harder than standard passenger cars. The monotube layout uses an air-free hydraulic chamber for control and a separate high-pressure gas chamber with a floating piston for consistent damping. That design helps the shock react quickly during normal driving while adding firmness when load, road input, or tire size increases. For shoppers comparing suspension parts for truck shock replacement, the KG6199 offers a technical upgrade path without changing the vehicle’s basic suspension layout.

This part cross-references Monroe Shocks & Struts 66502 and Gabriel 85012 for the same application. Part number KG6199 is also a useful search term when comparing KYB shock absorber options for truck suspension repair.

What It Helps Address

• Excessive body bounce after bumps or dips
• Reduced steering response from worn shocks
• Fade caused by heat and aeration in demanding use
• Loss of control when towing or carrying heavier loads
• Harsh handling with larger, heavier tires and wheels

Installation Notes

Verify compressed length, extended length, stroke length, and mount style before ordering. This shock uses upper and lower E1-L/E(19) mount types, so match the existing suspension hardware and mounting points on the vehicle. Confirm the application against the vehicle’s suspension configuration before installation, especially on trucks with modified ride height or aftermarket wheel and tire packages.

Quality Assurance

KYB designs the Gas-a-just line with monotube construction, high-pressure gas separation, and wear-resistant piston rod finishing to support consistent damping performance. The KG6199 is built to maintain response and control in demanding suspension service.