Black MAX twin tube shock absorbers have increased fluid capacity and utilize foam cell technology. When the shock is working hard and gets hot, the foam cell insert compresses to compensate for oil expansion which maintains consistent MAX Performance throughout the operating temperature range of the shock. The foam cell design also eliminates air inside the shock which allows for mounting in any direction. Arc welded end mounts and select specific valving give the BlackMAX shock absorber MAX value. Product Features:Advanced Foam Cell TechnologyVehicle Specific Multi Stage Valving Improves Tire Contact With The Road For Safety And ControlIncreased Fluid Capacity For MAX Heat DissipationTwin Tube Construction; D.O.M. Tubing Reduces Internal Wear For Longer Product LifeChrome Plated Shaft360 Degree Arc Welded End Mount180 Degree Directional MountingSintered Iron Piston Provides Durability And Maximum Shock PerformanceHeavy Duty Compression Head Reliable Performance Under Extreme ConditionsLimited Lifetime Warranty