KYB 554387 Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for Kia Soul

KYB Gas-a-Just 554387 is a monotube suspension shock absorber built as an OE-style replacement for the rear of the 2010-2013 Kia Soul. It is engineered to restore original handling response while adding the firmer control expected from a high-pressure gas shock.

Compatible with the Kia Soul rear suspension, this KYB Gas-a-Just shock uses separate hydraulic and nitrogen gas chambers for consistent damping, quick response, and fade-resistant operation. Part number 554387 is also a direct reference for shoppers comparing OE replacement options for the Kia Soul.

Key Features

• Monotube OE replacement design for rear suspension service
• Restores designed control and handling on the Kia Soul
• High-pressure gas and oil separation for fade-free operation
• Quick steering response from higher gas pressure and responsive valving
• Triple chrome plated piston rod helps reduce seal wear
• Built for vehicles that tow, work, or use larger, heavier tires and wheels
• Dust cover included

Product Details

The KYB Gas-a-Just line is designed for drivers who want an OE-monotube replacement with firmer control than a conventional twin-tube shock. Inside the 554387, an air-free hydraulic working area handles normal suspension movement, while a separate high-pressure nitrogen chamber supports immediate response when road conditions change. That design helps maintain consistent damping and steering feel on the 2010-2013 Kia Soul, especially when the vehicle is carrying extra load or running upgraded wheels and tires.

This part cross-references Monroe Shocks & Struts 5657 for the same application. If you are replacing a worn rear shock on a Kia Soul, 554387 is a focused OE-style option for restoring suspension control.

Common Problems This Part Can Address

• Excessive rear bounce after bumps or dips
• Loose or delayed handling response
• Reduced control from worn or leaking shock absorbers
• Uneven ride quality under load
• Loss of damping consistency during repeated suspension movement

Installation Notes

Fits 2010-2013 Kia Soul, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify mount style and compressed/extended length before installation: compressed length 10.04 in, extended length 14.37 in, stroke length 4.33 in. Lower mount type is E2(12X36) and upper mount type is E2(12X52).

Quality Assurance

KYB is known for OE suspension engineering, and the Gas-a-Just design uses a monotube layout to separate gas and oil for consistent performance and quick response. Part number 554387 is built to restore the rear suspension behavior specified for the Kia Soul platform.