Gabriel 89459 GasSLX Shock features a premium adjustable gas shock that provides customizable comfort and control. It delivers the ultimate in performance and durability for trucks trailers or buses. It has a three-position adjustable feature that has a firm, regular or extra firm ride It has a pressurized metal piston ring and 10-stage valving. It improves handling while maintaining ride comfort and allow damping to be independently adjusted It has a multi-lip viton seal. It is a more robust seal design for greater fluid retention. It has a high temperature performance while the specially formulated high-temperature fluid reduces friction and wear in extreme operating conditions It has an unique gas cell design (cab shocks only). It reduces fade and increases ride comfort. The hydraulic extension stop prevents shocks from topping out and suspensions from overextending The larger 1 5/8 inch bore design provides performance and durability you can count on while 360 degrees arc-welded eye ring end mounts (for most applications) and supplies superior structural strength Installation Specifications Compatibility Procedures Makes &amp; Models Features Recommendations Legacy Products