KYB KG5538 Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Tacoma, Quest, Villager

KYB Gas-a-just KG5538 is a rear monotube shock absorber built for drivers who want firmer control, quicker response, and consistent damping under load. It is engineered for rear suspension applications on the Toyota Tacoma, Nissan Quest, and Mercury Villager, including vehicles used for towing, hauling, or fitted with larger tires and wheels.

Gas-a-just Product Line

The KYB Gas-a-just line uses a monotube design with separate gas and oil chambers. That layout helps the shock react quickly, maintain damping consistency, and reduce fade during repeated suspension movement. For rear suspension service on a Toyota Tacoma rear shock replacement or a Nissan Quest rear shock upgrade, KG5538 is built to deliver more control than a conventional twin-tube design.

Key Features

• Adds up to 25% more damping performance over original equipment shocks
• Components and valving are tuned for the listed vehicle applications
• High-pressure monotube construction separates gas and oil for fade-resistant operation
• Responds quickly to improve steering feel and suspension control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Supports vehicles that work, tow, or run heavier tires and wheels
• Dust cover included

Detailed Description

KYB KG5538 is a rear suspension shock absorber with a compressed length of 12.17 inches, an extended length of 19.25 inches, and a 7.09-inch stroke. It uses E1 upper and lower mounts and is designed for direct rear placement on select Toyota Tacoma, Nissan Quest, and Mercury Villager applications. The monotube design keeps the hydraulic working area and high-pressure nitrogen gas chamber separate, which helps maintain consistent damping during normal driving and under heavier suspension demand. This part cross-references Monroe Shocks & Struts 37112 for the same application.

What It Helps Address

• Excessive rear-end bounce after bumps or dips
• Reduced control when towing or carrying added weight
• Soft or inconsistent rear suspension response
• Shock fade during repeated compression and rebound cycles
• Wear-related fluid leakage from aging rear shocks

Installation Notes and Fitment

Fits 1993-2002 Mercury Villager, rear. Fits 1993-2002 Nissan Quest, rear. Fits 1995-1998 Toyota Tacoma, rear. Fits 1998-2002 Toyota Tacoma, rear, excluding Off Road Package. Fits 1984-1989 Toyota Van, rear, with rear leaf springs. Fits 1977-1981 Toyota Pickup, rear. Verify mount style, compressed length, and extended length before installation on the vehicle.

Quality Assurance

KYB is a long-established suspension supplier, and the Gas-a-just design is built to maintain consistent damping performance in demanding rear suspension service. The monotube construction and chrome piston rod are used to support durability and reduce seal wear in everyday driving and load-carrying conditions.