The 718 was a development of the already successful Porsche 550A with improvements being made to the body work and suspension. The new front frame resembled the letter K if viewed from the front and this led to the car being referred to as the RSK. It had a mid-engined layout and used the Type 547/3 1.5-litre quad-cam engine which was first introduced in the 550A. The car made its racing debut at the 1957 24 Hours of Le Mans driven by Umberto Maglioli and Edgar Barth. The car failed to finish the race due to an accident.
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