05/29/2026
One of two ever built. The only one that raced for Interscope.
The Porsche-Kremer 935 K4-02 was on the floor at Air|Water Driven by Mobil 1 this year, and if you stopped in front of it for longer than a moment, you already know why.
The K4 was the Kremer Brothers’ answer to Norbert Singer’s Moby Dick, a 935-based 3.2-liter four-valve flat-six with water-cooled cylinder heads, 800 horsepower in qualifying trim and a lineage that ran directly through the most ferocious Group 5 racing of the early 1980s. Just two K4 chassis were ever constructed. K4-01 went to Bob Wollek, who won the German National Championship in it. K4-02 went to Ted Field’s Interscope Racing team, where Danny Ongais put it through its paces in IMSA’s GTX category, started 9th at Daytona in 1982 and placed 3rd at Mosport.
After decades of ownership changes, storage in California and a full mechanical rebuild at Gunnar Racing, the car found its way to Canepa Motorsport, whose restoration brought K4-02 back to exactly what it was built to be. Twin-turbo 935 powerplant from Porsche Motorsport North America. Honeycomb aluminum floor. Penske triple-adjustable shocks. MoTec dash and telemetry. The Interscope livery, as driven by Danny Ongais, wearing it the way it should.
As fast as a Group C 956 or 962. The last Porsche-based racing design you could still recognize as a production sports car. In Costa Mesa for a day.
Thank you to .cn for bringing this piece of history to Air|Water 2026.