KYB KG5491 Suspension Shock Absorber - Rear

KYB Gas-a-Just Rear Shock KG5491

The KYB Gas-a-Just KG5491 is a monotube suspension shock absorber built to restore OE-style control with added damping response. It is a direct-fit rear shock for select Mitsubishi Montero and Dodge Raider applications, with valving and construction aimed at trucks, towing, and vehicles running larger tires and wheels.

Gas-a-Just Product Line

KYB Gas-a-Just shocks use a monotube design with separate gas and oil chambers for consistent response and fade-resistant operation. The line is tuned for vehicles that work harder than average, helping maintain steering response and suspension control under load.

Key Features

• Adds up to 25% more damping performance over original equipment shocks
• Monotube construction separates gas and oil for quick response and fade resistance
• Valving and components are designed specifically for trucks
• High gas pressure improves steering response
• Triple chrome plated piston rod helps reduce seal wear
• Dust cover included

Detailed Description

The KYB KG5491 uses an air-free hydraulic piston area for control and a high-pressure nitrogen gas chamber with a floating piston for consistent operation. That design helps the shock react quickly to road inputs while maintaining a controlled ride during normal driving. It is a rear suspension shock absorber for 1989-1991 Mitsubishi Montero, rear, and 1989 Dodge Raider, rear. This part cross-references Monroe Shocks & Struts (e.g., 32314) for the same application.

Compatible With 1989-1991 Mitsubishi Montero, rear, and 1989 Dodge Raider, rear. The KG5491 is a practical OE monotube replacement for drivers who need firmer control from the rear suspension without changing the vehicle’s original layout.

What It Helps Address

• Excessive rear-end bounce over bumps and dips
• Reduced control when towing or carrying added load
• Slow steering response caused by worn rear shocks
• Suspension fade during repeated road impacts
• Ride instability from larger, heavier tires and wheels

Installation Notes and Tips

Fits 1989-1991 Mitsubishi Montero, rear, and 1989 Dodge Raider, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions where specified. Verify compressed length, extended length, stroke, and mount types before installation: compressed length 12.52 in., extended length 19.41 in., stroke length 6.89 in., lower mount E2(10X60), upper mount E1. R-stop is included in the design, and the dust cover is included.

Quality Assurance

KYB is known for OE-style suspension engineering, and the Gas-a-Just line is built as a monotube replacement to help restore original vehicle capability with consistent damping control. The KG5491 is engineered to support electronic safety systems by helping the suspension operate as the vehicle manufacturer intended.