The Royal Flash was designed by Larry Wood. It is based on a Porsche 935 "flat nose" race car, a highly successful endurance racer from the late 1970s.
It debuted in 1979 in the mainline series, corresponding to model 2501-a with Blackwall (BW) wheels.
The casting has a very low, wide, and aggressive racing stance, with a huge rear wing and a distinctive flat nose. The initial release was typically in red with yellow and white graphics. The name was likely a way to avoid licensing fees.
It is a pure racing car, similar in theme to the "P-911" but representing a later, more extreme evolution of the 911 race car.
It was a popular casting in the early 80s and was released in several different racing liveries and colors.