Races with electric off-road cars increased in popularity after the release of Tamiya's Rough Rider. The 2WD "Scorpion" was released by Kyosho during this period. Kyosho had been promoting its 1/8 scale engine buggy "Circuit 20" in races at the time, and the Scorpion can be described as a miniaturized version of the Circuit 20. The double trailing arm front suspension, semi-streaming rear suspension, aluminum ladder frame, rear-mounted RS540S motor, oil damper and coil springs very much resemble the design for a 1/8 scale racing buggy of the time. The thin body was realized by placing the batteries pointing forward, and its light weight (1680g, with full equipment) gave it a huge advantage over rival models. Its main rivals were Tamiya's Rough Rider and ayk's 556B.