The Aurora Plastics Corporation introduced the A/FX (Aurora Factory Experimentals, later simply "AFX") line of slot cars, slot car track sets, and related accessories in 1971. The brand name AFX continued production by Aurora until the company was forced into receivership in 1983. Aurora designed the AFX cars with interchangeable car body shells usually compatible with each chassis they released during these years. The original 1971 A/FX chassis utilized the existing design of Aurora's "Thunder-Jet" line, popular in the 1960s. Then Aurora released a longer version of the A/FX chassis in 1973, known as the "Specialty" chassis. Car body shells were thereafter designed for either chassis length. The car bodies designed to fit the shorter chassis featured a clever snap-on design while the longer chassis affixed the body with a small screw. In late 1974, Aurora re-designed both the original and specialty chassis by exposing the bottom side of the motor magnets. The exposed magnets were attracted to the metal rails in the track during racing, helping hold the car in place, limiting both fish-tailing and de-slotting. These "Magna-Traction" cars remained popular in production from their release in 1974 throughout 1983, even after they were followed by faster chassis designs.
Aurora introduced an innovative in-line motor chassis in 1976, the "G-Plus." This design allowed for the manufacture of open wheel Formula 1 style bodies. Design engineers kept the same specifications for body mounting so all previous original body shells could fit the new G-Plus chassis. Aurora never designed an in-line chassis for the longer bodies designed for their original specialty chassis. Beginning in 1977 Aurora initiated several attempts at slot-less car chassis designs. These included the Ultra-5, Speed Steer, and Magna-Steering. Other slotted in-line chassis designs similar to the G-Plus were also introduced, as well as altered Magna-Traction chassis like the Magna-Sonic, and a chassis featuring overhead lights for police cars.
Aurora designed their car body shells around a variety of themes including the Can-Am racing series, NASCAR series stock cars, Formula 1, Funny Car Drag Racing, sports cars, off road cars, street cars, as well as custom designs.
Aurora contracted with race car drivers whose images and endorsements appeared on AFX Slot Car sets. These included Peter Revson, Jackie Stewart, Mario Andretti, A.J. Foyt, and Richard Petty. Revson's untimely death in 1974 forced Aurora to cover his image with a sticker on already produced boxed sets.The AFX brand released only one licensed track set, in 1982, when they partnered with the popular "Fall Guy" TV show. Another set licensed with the TV show M*A*S*H was planned for 1983, but Aurora suspended operations prior to release.