Great for sport utility vehicles, 4x4s, and other performance vehicles because of their consistent control and ability to instantaneously help your vehicle respond to varying road conditions, ACDelco Premium Monotube
Shocks feature:

• Improved velocity sensing, which provides optimum damping
• Tuned, variable valving for more precise control
• Monotube design, which helps eliminate the mixture of gas and oil, eliminates cavitation, eliminates aeration, eliminates lag and helps improve response, maintains high-pressure gas (up to 275 psi)
• Compared to conventional twin-tube shocks, monotube provide superb heat dissipation, improved cooling, and drastic reduction in fade
• A design that allows for a larger internal working area, helping reduce stress and fatigue for better component durability
• The advantage of variable valving, which includes multiple resistance levels, eliminates lag and fade, offers superb response time, and helps ensure high-performance ride and enhanced control
• ACDelco Shocks and Struts feature a competitive limited lifetime warranty for passenger cars and light-duty trucks. See the Independent Service Centre who installed your ACDelco Shocks and Struts for additional warranty or the package in which they came