The KYB Gas-a-just monotube shock delivers instant automatic damping adjustment and resists fade for consistent control and ride comfort. Its two-chamber design pairs an air-free hydraulic piston for responsiveness with a high-pressure nitrogen chamber for stable comfort and on-demand performance. Intended as an OE-style monotube replacement for front applications including Avanti II (1986–1991), Buick Century and Regal model ranges listed.
KYB Shocks & Struts Gas-A-Just Front AVANTI II 1986-91 BUICK Century 1973-81 BUICK Regal 1973-87 BUI