Absolute domination. Masterfully engineered, meticulously designed for one purpose only – Porsche’s 917 blew the endurance racing world away from its Le Mans debut in 1970 to the entire 1971 race calendar, cementing its reputation as one of the most successful competition machines of all time. Based on the 908 and with a whole year’s worth of development over their competitors, Porsche upped the technology ante with its first ever 12 cylinder engine and a host of titanium, magnesium and alloy parts – revolutionary in its day. If this is the Breakfast Club of Group 5 racing, the Porsche 917 is undoubtedly the teacher’s pet.

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