Dr.-Ing. h.c. F. Porsche AG, usually shortened to Porsche AG, is an automobile manufacturer specializing in high-performance sports cars, SUVs and sedans.

The 917LH (Langheck) featured a spectacular new long tail body which had very low drag, yet more rear downforce than the 1969 long tail. A 4.9-litre engine, introduced at 1000km Monza, was available but these proved to be unreliable for longer distance races.

The favorite team to win, Gulf-backed John Wyer Automotive, lined up three 917Ks, two with the 4.9-litre engine and one with the 4.5-litre unit.