KYB KG54333 Suspension Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Ford Super Duty

The KYB Gas-a-just KG54333 is a rear monotube shock absorber built for Ford Super Duty trucks that need firmer control than a standard twin-tube design. It is engineered for 1999-2004 Ford F-250 Super Duty and 1999-2007 Ford F-350 Super Duty, with additional coverage for 2008-2016 Ford F-350 Super Duty equipped with off-road suspension.

Key Features

• Up to 25% more damping performance than original equipment shocks
• Monotube design separates gas and oil for fade-free operation and quick response
• High-pressure nitrogen gas helps maintain consistent control during demanding driving
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Valving and components are tuned specifically for Ford truck applications
• Designed for trucks that work, tow, and run larger, heavier tires and wheels
• Dust cover included

Gas-a-just Product Line Details

KYB Gas-a-just shocks use a two-chamber monotube layout with an air-free hydraulic working area and a separate high-pressure gas chamber. That design supports responsive damping during normal driving while adding immediate control when load, road conditions, or suspension movement increase. For Ford F-250 Super Duty and Ford F-350 Super Duty rear suspension service, KG54333 is built to deliver consistent shock control without the fade associated with aeration in conventional twin-tube units.

What This Shock Helps Address

• Excessive rear-end bounce over rough pavement or uneven roads
• Reduced control when towing or carrying heavier loads
• Soft or delayed suspension response after OE shock wear
• Body motion caused by larger tires and wheels
• Loss of damping consistency from heat and aeration in worn shocks

Installation Notes and Fitment

Fits 2008-2016 Ford F-350 Super Duty, rear, monotube performance upgrade; w/ off road suspension; Gas-a-just. Fits 1999-2007 Ford F-350 Super Duty, rear, install a monotube shock absorber to enhance performance; Gas-a-just. Fits 1999-2004 Ford F-250 Super Duty, rear, install a monotube shock absorber to enhance performance; Gas-a-just. Verify compressed length 17.87 in., extended length 29.25 in., and stroke length 11.38 in. before installation. Lower mount type is E2(12X38) and upper mount type is E1. This part cross-references Monroe Shocks & Struts 911196 for the same application.

Quality Assurance

KYB designs Gas-a-just shocks with monotube construction, high-pressure gas separation, and corrosion-resistant piston rod finishing to support consistent suspension performance. Electronic safety systems depend on suspension, brakes, and tires operating as the vehicle manufacturer intended, and this shock is built to help maintain that behavior on the listed Ford Super Duty applications.