After dominating the 1970 season, the Porsche 917 underwent various updates. A new 5-liter engine (86.8x70.4mm) was introduced with a power that rose to 620hp. The aerodynamics were very careful, with a new bodywork characterized by large rear fins. The long-tail version, designed for Le Mans, also received a new aerodynamic configuration. The coupé version of the 917 confirmed its supremacy also in 1971, with the second victory at Le Mans for Porsche. The two leading teams were Martini Racing and Team Gulf Wyer. At the end of the season, with the change in regulations, the 917 was excluded from the World Championship, but the Spyder versions continued to be used in other championships, such as Can-Am and Interserie.
Entered by Martini Racing (Hans Dieter Dechent) in the 1971 Monza 1000km, this Porsche 917 chassis 020 was driven by Vic Elford and Gérard Larrousse, who had to retire after 44 laps due to engine failure.
Brumm was founded by Reno Tattarletti, former Rio sales director, with Emilio Molteni and Virginio Bianchi in Como, in 1972. The company name comes from a model of carriage (from "Brougham") widely used in Milan in Nineteenth century. Brumm originally made 1:43 scale models of horse-drawn carriages. In the mid-1970s, steam-powered vehicle models went into production, and in 1977, classic car models. Car models, mostly sports and racing cars, along with some small Fiats, soon became the company's most important and successful product line. Since the mid-1980s Brumm has regularly produced limited edition models in special and promotional liveries. Proudly continuing to produce in Italy, Brumm is today very active, with a very rich catalog that offers updated variants of already known moulds. Completely new molds are nowadays rare, such as the Fiat Panda II Series, which was long overdue.