1974 Porsche

Le Mans entrant 1974 & 1977

European GT Championship winning car 1974

One of only six Kremer RSK 3.0 ever built

Driven by Wollek, van Lennep and Fitzpatrick

FIA Historic Technical Passport

Out of 24 years of previous ownership

Multiple race wins

Fully restored

The Porsche 911 Carrera RSR 3.0

Unveiled in 1974, it marked a decisive step in the development of the 911 as a thoroughbred racing car. It was the direct successor to the 2.8 RSR and was developed in Weissach specifically for use in Group 4 international motorsport. The aim was to create a car that was at the pinnacle of its class in terms of both technology and driving dynamics, and which consistently built on the exceptional foundations of the 911. At the heart of the 911 Carrera RSR 3.0 was an air-cooled six-cylinder boxer engine with a displacement of 2,992 cc. Porsche used a reinforced aluminium crankcase for this, replacing the earlier magnesium crankcase of the 2.8 RSR. The engine featured dual ignition, mechanical Bosch fuel injection and a compression ratio of 10.3:1. With this combination, the naturally aspirated engine of the Kremer-built RSK 3.0 produced 330 PS at 8,000 rpm, 15 PS more than the factory RSR and a torque of 303 Newton metres. This was achieved through modified engine components, such as the camshafts. Power was transmitted via a five-speed manual gearbox, which transferred the power to the rear wheels precisely and robustly. Despite the absence of turbocharging, the RSR 3.0 offered impressive acceleration and agility thanks to its low weight of around 900 kilograms. Porsche placed great emphasis on lightweight construction and aerodynamics in the RSR 3.0. Parts of the bodywork were made from glass-fibre-reinforced plastic, which further reduced the weight. The bonnet, doors, bumpers and the distinctive ducktail rear spoiler were also constructed from lightweight materials. The wings were significantly widened to accommodate the larger wheels, measuring 10.5 inches at the front and 14 inches at the rear. Plexiglass side windows and thinner sheet metal parts underlined the uncompromising lightweight construction approach. The RSK 3.0 also received revised aerodynamics from Kremer, which provided greater downforce and stability at high speeds.

The braking system was partly derived from the legendary Porsche 917 and delivered outstanding deceleration figures. Porsche fitted centrally bolted wheels, as is still common in professional racing today, to enable quick wheel changes. The chassis was optimised for racing, featuring modified wishbones, Bilstein dampers and adjustable anti-roll bars. This combination gave the car neutral, precise handling and excellent traction. The interior was all about functionality. The cockpit consisted of a bucket seat, roll cage, small steering wheel and the bare essentials of instrumentation. Everything served the purpose of saving weight and focusing entirely on performance. The 911 Carrera RSR 3.0 dominated the GT class in 1974 and 1975. Numerous private and works teams successfully fielded the car. It was particularly impressive that the Porsche often competed against significantly more powerful rivals and still secured victories. Its low weight, excellent balance and reliability made it one of the most successful GT cars of its time. A total of around 50 units were built, with only six of the modified Kremer RSK 3.0 models produced. Many older 911 models were later converted to the RSR specification in order to match the performance of this car. Even after the introduction of the turbocharged 911 models, the RSR 3.0 remained a favourite among many racing drivers thanks to its purist mechanics and direct driving feel. To this day, the model stands as a symbol of the technical expertise and perfectionism with which Porsche and Kremer shaped the world of motorsport. It embodies the companies’ philosophy of getting the most out of every detail through precision, lightweight construction and engineering excellence. This car is regarded not only as one of the most beautiful, but also as one of the most successful 911s in history.

About the vehicle offered here

Chassis 0006 is one of three RSK 3.0s built by Kremer in 1974. The Samson Kremer Racing Team entered the car in the 1974 European GT Championship, which driver John Fitzpatrick went on to win that year in this RSK. Furthermore, Kremer entered Chassis 0006 in other international endurance races in 1974, including the 24 Hours of Le Mans. Following a sensational qualifying session, in which the car with start number 68 was the fastest in its class and 15th overall, drivers Hans Heyer, Paul Keller and Erwin Kremer lined up at the start full of hope. After a good start to the race, the team was unfortunately forced to retire the Porsche in the fifth hour due to piston problems.

Following the 1974 season and the championship, Kremer Racing sold chassis 0006 to Louis Meznarie, who lived in Paris and served as Porsche’s official engine tuning specialist from 1971 to 1983. By 1977, in time for the 24 Hours of Le Mans, the RSK 3.0 had been converted into the aerodynamic 934/5, although this involved only aesthetic components and not the engine. In a letter dated 5 April 1977 to Meznarie, the A.C.O. informed him that his application to participate in the 1977 24 Hours of Le Mans had been accepted and that he was invited to the pre-race test. The subsequent letter dated 20 May allocated start number 43 to the car. A photograph from the period shows the car with the 934/5 bodywork at the 1977 Le Mans scrutineering. In qualifying, driver Thierry Sabine set a lap time of 4:31.6, which was not sufficient to qualify for the main race.

After Le Mans, the RSK was reportedly sold to Carlo Noce of the Italian sports car team, who kept the Kremer Porsche until 2001. At that point, it was acquired by a Monaco-based Porsche collector, who undertook a complete restoration with the aim of restoring the 0006 to its 1974 glory, with the number 68 it bore at Le Mans. During the 2023 and 2024 seasons, the RSR was entered in Classic Endurance races across Europe.

In 2025, after owning it for 24 years, the collector decided to sell the Kremer Porsche, whereupon the car came into the possession of Mechatronik, where it was stored for a year as part of their in-house collection. An FIA Historic Technical Passport was issued to enable participation in historic motorsport events; this is valid until the end of 2033. Two expert reports are available, summarising the history of 0006. In addition, numerous documents and photographs from the 1970s are available.

Our sales staff are always happy to answer any detailed questions you may have. Please note that vehicle viewings are generally only possible by prior appointment.