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 AFX brand continued production 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 an updated version of the existing pancake motor design of Aurora's "Thunderjet 500" line, popular in the 1960s. Aurora then released a longer version of the A/FX chassis in 1973, known as the "Specialty" chassis, which incorporated a longer wheelbase and gearplate (and often a more powerful armature) with bodies unique to that chassis. The car bodies designed to fit the shorter original chassis featured a clever snap-on design while the bodies for the Specialty chassis were affixed with a small screw. In late 1974, Aurora redesigned both the original and Specialty chassis and exposed the bottom of the motor magnets. The exposed magnets were attracted to the metal rails in the track during racing, creating downforce to help hold the car on the track while cornering. AFX "Magna-Traction" cars remained popular from their release in 1974 throughout 1983, even after faster chassis designs were introduced in house and by Tyco.
Aurora introduced the innovative "G-Plus" in-line motor chassis in 1976. This design allowed the manufacture of narrow, open wheel Formula 1 style bodies. A version of the chassis was also released that would fit most of the previous tab-mounted AFX bodies. Aurora never designed an in-line chassis for the longer bodies for the Specialty chassis. In 1977, Aurora initiated several attempts at AFX-based slotless 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 Super Magna-Traction, SP1000, Blazin' Brakes, Speed Shifters and Cats Eyes) as well as add-ons to the Magna-Traction chassis like the Magna-Sonic sound box, and an overhead light flasher for police cars.
AFX body shells encompassed a variety of themes including the Can-Am racing series, NASCAR and Trans-Am 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. Aurora 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.