One-of-two Kremer-built CK5 endurance racers, with Le Mans pedigree, will cross the block at Monterey Jet Center 2025.
One of the rarest and most significant Porsche-based endurance prototypes ever constructed, the 1983 Porsche-Kremer CK5, is slated for auction at the Monterey Jet Center 2025 event, presented by Broad Arrow Auctions. With an estimated value between $800,000 and $950,000, this Group C racer represents a unique chapter in privateer Porsche history.
Built by the renowned Kremer Racing team in Cologne, Germany, only two CK5s were ever produced for competition in the 1982 and 1983 World Sportscar Championship seasons. The example set for auction—chassis CK5-02—has an illustrious racing past that includes an entry at the 1983 24 Hours of Le Mans, piloted by Derek Warwick, Franz Konrad Jelinski, and Philippe Gaillard.
Constructed around a lightweight aluminum spaceframe and draped in bodywork styled and fabricated by DP Motorsport, the CK5's design was heavily inspired by Porsche’s legendary 917 and 936 models. While not an official Porsche factory entry, Kremer's deep experience with the marque—particularly its success with modified 935s—resulted in a machine capable of challenging the world’s best.
Under the bodywork lies a flat-six engine (No. 6980077/1) paired with a Porsche 917-type transmission (No. 917 093), further underscoring its mechanical pedigree. The CK5 was conceived as a transitional platform to keep Kremer competitive in the early Group C era until the advent of the Porsche 956.
In recent years, CK5-02 was invited to Porsche Rennsport Reunion 7 at Laguna Seca, signaling its continued relevance and reverence within Porsche motorsport circles.
The sale of this prototype presents a rare opportunity for collectors and historic racing enthusiasts to acquire a cornerstone of Kremer and Porsche’s collaborative competition legacy.
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