Abarth produced high-performance exhaust pipes, diversifying into tuning kits for road vehicles, mainly for Fiat. A racing exhaust was produced for the 1950s Lambretta models "D" and "LD". Original Abarth LD exhausts are now valuable collectors items. Reproductions are available which carry the Abarth name, how Fiat feels about this is not known. Lambretta even held several 125cc Motorcycle land speed records during the 1950s thanks partly to the exhaust that Abarth developed for them.  Abarth also helped build sports or racing cars with Porsche and Simca.
In the 1980s Abarth name was mainly used to mark performance cars, such as the Fiat Ritmo Abarth 130 TC. The name was almost forgotten in 1990s.
In 2000s, Fiat used the Abarth brand to designate a trim/model level, as in the Fiat Stilo Abarth.
In 2007, Fiat Automobiles SpA relaunched the brand with the Grande Punto Abarth and the Grande Punto Abarth S2000. The brand is separate from the main Fiat brand. It is based in the Officine 83, part of the old Mirafiori engineering plant. The CEO is Harald Wester.