KYB KG5489 Shock Absorber - Front

KYB Gas-a-Just Front Shock for Ranger and Explorer

The KYB Gas-a-just KG5489 is a front monotube shock absorber built for trucks and SUVs that need firmer control, quicker response, and consistent damping. It is a direct-fit suspension shock absorber for select Ford Ranger, Ford Explorer, Mazda B2300, Mazda B3000, Mazda B4000, Mazda Navajo, and Bronco II applications.

Gas-a-just is KYB’s monotube performance line, using separate gas and oil chambers to maintain response under load. For drivers looking for a front shock upgrade on a 1990-1997 Ford Ranger or 1991-1994 Ford Explorer, KG5489 is engineered to add control without sacrificing everyday ride quality.

Key Features

• Adds up to 25% more damping performance over original equipment shocks
• Monotube design separates gas and oil for fade-resistant operation and fast response
• Built with truck-specific valving and components
• Higher gas pressure helps improve steering response
• Triple chrome plated piston rod helps reduce seal wear
• Dust cover included
• Front position application

Product Details

The KYB Gas-a-just KG5489 uses a high-pressure monotube design with an air-free hydraulic working area and a separate nitrogen gas chamber. That layout helps the shock react quickly to suspension movement and maintain control during repeated compression and rebound cycles. It is a practical choice for vehicles that work, tow, or run larger, heavier tires and wheels.

Fitment includes 1989-1997 Ford Ranger front, 1990 Ford Bronco II front, 1991-1994 Ford Explorer front, 1991-1994 Mazda Navajo front, and 1994-1997 Mazda B2300, B3000, and B4000 front. This part cross-references Monroe Shocks & Struts 37015 for the same application.

What It Helps Address

• Excessive front-end bounce over bumps and dips
• Reduced steering response during braking and cornering
• Shock fade during repeated suspension movement
• Loss of control from worn OE-style damping
• Front suspension instability on trucks with added load or larger tires

Installation Notes and Tips

Verify compressed length, extended length, and mount types before installation: compressed length 9.72 in., extended length 14.41 in., stroke length 4.69 in., lower mount type E1, upper mount type S1. This shock is for the front position only and is listed for 1989-1997 Ford Ranger, 1990 Ford Bronco II, 1991-1994 Ford Explorer, and select Mazda truck and SUV applications. Confirm vehicle build date and option content, including the Ranger High Ryder exclusion and the Bronco II from 10/1989 note, before ordering.

Quality Assurance

KYB designs Gas-a-just shocks for performance-oriented OE replacement use, with monotube construction intended to maintain consistent damping and steering response. The KG5489 is engineered to support the suspension behavior expected by the vehicle manufacturer while adding firmer control for demanding driving conditions.