Foam-cell technology is used in this line of Skyjacker Black MAX B8500
series shocks allowing for 180 degree mounting. For MAX performance when the
shock gets heated up, the foam-cell compresses to compensate for oil expansion
which will maintain consistent performance throughout the operating temperature
range of the shock. The foam-cell also eliminates air inside the shock and this
is what allows for mounting in any direction. Arc welded end mounts and vehicle
specific valving will give you MAX performance and value in all driving
conditions. Features of the Black MAX shock include:

Advanced Foam-Cell Technology
Vehicle specific multi-stage valving
Increased fluid capacity for MAX heat dissipation
360 degree arc-welded end mount
180 degree directional mounting
Twin Tube construction
Chrome plated shaft
Sintered iron piston
Black Boot included
Limited Lifetime Warranty