Stompers 4x4 trucks and cars were first created in 1980 by Schaper Toys and were battery-powered (with only one AA battery). They featured all-wheel, 4x4 drive and one single motor turned both axles.
Produced from 1980 to 1982. It expanded with special groups "Work x 4" and "Fun x 4" Models include Trucks, Semis and Vans.
Produced from 1983 to 1985. Added special features like second speed and bigger tires. Gen II had many different groups of psychical. Models expanded to construction ethicals, VW bugs, campers with trailers dragsters and tanks.
Produced from 1987 to 1988. New models expanded including, water demons, minis and a special McDonald's Stomper.
Produced in 1992. New models included a military line called Stormers, Earthquake Alley and Authentics.
Produced from 1997 to 1999. New models included Road Kill, Work Force, Battle Ready, X-Treme Street. The company moved onto a new product "Shifters" a copycat Stomper that was 1/4" wider.
Produced in 2001, and continues making new models and lines.
What's it worth? Take a look at this Schaper Stomper price guide: sold listings for a value indication.