This is the Traxxas pair of XX-Long Black Shocks.
Two Traxxas Black Shocks XX Long with springs, pre-load spacers of four different widths, silicone oil, bodies and pistons.
Assembling, filling with oil and installing on vehicle.
Length: 4-1/32" (102mm) fully extended
Length: 2-3/4" (40mm) fully compressed
Diameter: 1/2" (13mm)