KYB Gas-a-just Monotube Shock Absorber KG4550 for Select 1955-1985 Chevrolet, Volvo, and Pontiac

Fits select 1955-1985 Avanti II, Buick Riviera, Chevrolet (Bel Air, Corvair, Corvette, Impala), Pontiac (Bonneville, Catalina), and Volvo (142, 144, 145, 164) models.

The KYB Gas-a-just is a high-pressure monotube shock absorber designed to provide significantly more control and response than traditional twin-tube designs. By utilizing a completely separate hydraulic chamber and a high-pressure nitrogen gas chamber, the Gas-a-just eliminates performance fade caused by aeration (foaming) during spirited driving or rough road conditions. This design allows the shock to instantly and automatically adjust to your performance needs, keeping tires planted and electronic safety systems operating as intended.

• Monotube design increases handling performance over standard twin-tube shocks
• Floating piston separates gas and oil to prevent aeration and hydraulic fade
• Instant, automatic adjustment to driving conditions for improved cornering stability
• Seamless cylinder and heavy-duty seals for long-term durability under pressure
• Maintains consistent performance for vehicles equipped with early electronic safety systems
• Manufacturer Part Number: KG4550