KYB Gas-a-Just Monotube Rear Shock Absorber KG5511

The KYB Gas-a-just monotube shock absorber has additional performance advantages over the traditional twin-tube design: It can instantly, automatically adjust to your performance needs and never experiences fade due to aeration. The KYB Gas-a-just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness and control, and a second high-pressure nitrogen gas area with a floating piston that provides a comfortable ride during normal driving and adds instant performance on demand.

• Electronic safety systems depend on the suspension, brakes and tires operating as the vehicle manufacturer intended. The KYB Gas-a-just helps keep Electronic Safety Systems performing as designed.

The KYB Gas-a-Just KG5511 rear shock absorber is designed to improve suspension control, handling response, and ride stability on select classic Dodge and Plymouth vehicles. Its monotube construction separates the hydraulic working area from the high-pressure nitrogen gas chamber, helping the shock respond quickly to changing road and driving conditions.

Unlike conventional twin-tube designs, the KYB Gas-a-Just uses a floating piston to keep the hydraulic fluid and nitrogen gas separated. This air-free design helps reduce aeration-related fade while supporting consistent damping performance during normal driving and more demanding maneuvers. The result is improved tire contact, vehicle control, and suspension responsiveness without sacrificing everyday ride comfort.

Electronic safety systems depend on the suspension, brakes, and tires operating as the vehicle manufacturer intended. The KYB Gas-a-Just helps support the suspension performance required for electronic safety systems to function as designed. This automotive shock absorber is intended for rear suspension applications and is supplied as one shock absorber.

Product Specifications & Technical Data

• Brand: KYB
• Part Number: KG5511
• Product Type: Monotube gas-charged shock absorber
• Position: Rear
• Application: Automotive suspension
• Working Fluid Design: Air-free hydraulic piston and valve area
• Gas Chamber: High-pressure nitrogen with floating piston
• Quantity: One shock absorber

What's Included

• One KYB Gas-a-Just KG5511 rear shock absorber

Fitment: Fits select 1960-1963 Plymouth Fury, 1960-1962 Plymouth Valiant, 1963 Dodge Dart, 1964-1969 Plymouth Barracuda, and 1960s-1970s Plymouth Duster applications. Verify the vehicle year, make, model, suspension position, and application details before ordering.

Features:

• Monotube Performance: Separate hydraulic and nitrogen chambers provide responsive damping and improved suspension control.
• Fade Resistance: Air-free hydraulic operation helps reduce performance loss caused by fluid aeration during demanding driving.
• Automatic Damping Response: The shock adjusts quickly to changing road conditions and driving demands for consistent handling.
• Electronic Safety Support: Helps maintain suspension performance so electronic safety systems can operate as intended by the vehicle manufacturer.

Fitments:
1957 Plymouth Fury Base
1958 Plymouth Fury Base
1959 Plymouth Fury Base
1959 Plymouth Fury Sport
1960 Plymouth Fury Base
1960 Plymouth Valiant 200
1960 Plymouth Valiant Base
1961 Plymouth Fury Base
1961 Plymouth Valiant 200
1961 Plymouth Valiant Base
1962 Plymouth Valiant 200
1962 Plymouth Valiant Base
1962 Plymouth Valiant Signet
1963 Dodge Dart 270
1963 Dodge Dart Base
1963 Dodge Dart GT
1963 Plymouth Valiant 200
1963 Plymouth Valiant Base
1963 Plymouth Valiant Signet
1964 Dodge Dart 270
1964 Dodge Dart Base
1964 Dodge Dart GTS
1964 Plymouth Barracuda Base
1964 Plymouth Valiant 200
1964 Plymouth Valiant Base
1964 Plymouth Valiant Signet
1965 Dodge Dart 270
1965 Dodge Dart Base
1965 Dodge Dart GT
1965 Plymouth Barracuda Base
1965 Plymouth Valiant Base
1965 Plymouth Valiant Signet
1966 Dodge Dart 270
1966 Dodge Dart Base
1966 Dodge Dart GT
1966 Plymouth Barracuda Base
1966 Plymouth Valiant 200
1966 Plymouth Valiant Base
1966 Plymouth Valiant Signet
1967 Dodge Dart 270
1967 Dodge Dart Base
1967 Dodge Dart GT
1967 Plymouth Barracuda Base
1967 Plymouth Valiant Base
1967 Plymouth Valiant Signet
1968 Dodge Dart 270
1968 Dodge Dart Base
1968 Dodge Dart GT
1968 Dodge Dart GTS
1968 Plymouth Barracuda Base
1968 Plymouth Valiant 100
1968 Plymouth Valiant Base
1968 Plymouth Valiant Signet
1969 Dodge Dart Base
1969 Dodge Dart Custom
1969 Dodge Dart GT
1969 Dodge Dart GTS
1969 Dodge Dart Swinger
1969 Dodge Dart Swinger 340
1969 Plymouth Barracuda Base
1969 Plymouth Valiant 100
1969 Plymouth Valiant Base
1969 Plymouth Valiant Signet
1970 Dodge Dart Base
1970 Dodge Dart Custom
1970 Dodge Dart Swinger
1970 Dodge Dart Swinger 340
1970 Plymouth Duster 340
1970 Plymouth Duster Base
1970 Plymouth Valiant Base
1971 Dodge Dart Base
1971 Dodge Dart Custom
1971 Dodge Dart Demon
1971 Dodge Dart Demon 340
1971 Dodge Dart Special
1971 Dodge Dart Swinger
1971 Plymouth Duster 340
1971 Plymouth Duster Base
1971 Plymouth Scamp Base
1971 Plymouth Valiant Base
1972 Dodge Dart Base
1972 Dodge Dart Custom
1972 Dodge Dart Demon
1972 Dodge Dart Demon 340
1972 Dodge Dart Special
1972 Dodge Dart Swinger
1972 Plymouth Duster 340
1972 Plymouth Duster Base
1972 Plymouth Scamp Base
1972 Plymouth Valiant Base
1973 Dodge Dart Base
1973 Dodge Dart Custom
1973 Dodge Dart Special
1973 Dodge Dart Sport
1973 Dodge Dart Sport 340
1973 Dodge Dart Swinger
1973 Plymouth Duster 340
1973 Plymouth Duster Base
1973 Plymouth Scamp Base
1973 Plymouth Valiant Base
1974 Dodge Dart Base
1974 Dodge Dart Custom
1974 Dodge Dart Special
1974 Dodge Dart Special Edition
1974 Dodge Dart Sport
1974 Dodge Dart Sport 360
1974 Dodge Dart Swinger
1974 Plymouth Duster 360
1974 Plymouth Duster Base
1974 Plymouth Scamp Base
1974 Plymouth Valiant Base
1974 Plymouth Valiant Brougham
1975 Dodge Dart Base
1975 Dodge Dart Custom
1975 Dodge Dart Special Edition
1975 Dodge Dart Sport
1975 Dodge Dart Sport 360
1975 Dodge Dart Swinger
1975 Dodge Dart Swinger Special
1975 Plymouth Duster 360
1975 Plymouth Duster Base
1975 Plymouth Duster Custom
1975 Plymouth Scamp Base
1975 Plymouth Scamp Brougham
1975 Plymouth Scamp Special
1975 Plymouth Valiant Base
1975 Plymouth Valiant Brougham
1975 Plymouth Valiant Custom
1975 Plymouth Valiant Scamp
1976 Dodge Dart Base
1976 Dodge Dart Sport
1976 Dodge Dart Swinger
1976 Dodge Dart Swinger Special
1976 Plymouth Duster Sport
1976 Plymouth Scamp Base
1976 Plymouth Scamp Special
1976 Plymouth Valiant Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1