S7G4020 
Bilstein SG Series S7G mono-tube gas shocks feature the latest development in shock valving technology; digressive valving. This delivers a new level of control by damping slow suspension movements more effectively while not allowing the chassis to be upset by sharp bumps. Bilstein has set the standard for years in Winston Cup, Indy Car and Formula 1. Now its setting the standard for Modifieds, Late Models and Open Wheel.
Use on the front of Modifieds and Sprints
Also suitable for Midgets, TQs, Dwarf Cars, etc.
Monotube gas pressure construction
Economy price
Lightweight
Low rod pressure
Bilsteins famous consistent, fade-free performance
Features one bearing end and one welded end
1-5/8" steel body
7" stroke
Comp. Length:  12"
Extended Length:  20"