Engine construction and motor racing have a 55-year-old tradition at Arens. We deploy this power of experience, methodology and vision that has come of age to make a modern drive train available to users of recreational craft – one that harmoniously marries enjoyment, environment and technology.


1966 Berlin | Rudolf Arens

Where do we come from?

Rudolf Arens maintains and optimises two-stroke engines for motor vehicles. The passion grows, manifesting itself as an indelible part of his life. In 1961, at the age of 28, the master of precision engineering establishes a precision engineering repair workshop. The craft he has learned, along with his workshop, give him the opportunity to implement his own ideas about two-stroke engines.


1973 | Rudolf Arens

Where are the limits to performance?

Rudolf Arens waterborne and in competitive mode. Testing, learning, implementing. Motor boat racing demands that engines give their all. They are almost exclusively operated at full throttle. They have to be very lightweight; this is why only two-stroke engines with their simple and compact design are in the running.

How do we achieve success?

Rudolf Arens wins with his engines. The attempts and failures through the years are transformed into knowledge born of experience and into expertise. All success is built upon the ability to reproduce the performance of an engine.


1988 Arens-Motor 500 ccm

How do we obtain such knowledge?

Rudolf Arens has been training his son for a long time. At the age of 12 years, Holger is already receiving instruction pertinent to the machines sited in his father’s workshop. At 15 years of age, he takes his seat in his first racing boat, having independently built the latter’s two-stroke engine. In the 1980s, Holger Arens begins to manufacture entire racing engines. His designs achieve national and international success in various cylinder capacity classes.

1989 Berl.-Grünau | H. Arens

How do we preserve tradition?

The successor is triumphant. Holger Arens carries on the tradition and expands it. After numerous successes at the national level, he becomes a member of the national team of the GDR in 1984. This is also the year in which, as a newly appointed master craftsman, he establishes his metalworking facility.

1987 Bratislava | H. Arens

Success and concomitant risks?

In the 1990 World Championship event at Zagreb (in erstwhile Yugoslavia [now Croatia]), Holger suffers a serious injury. Rehabilitation and the new political environment force him to take a break from constructing engines. Other drivers who deploy his engines are crowned with success up until the early 1990s.


1995 Kerpen / Lars Arens

What have the grandchildren achieved?

Back to the roots. Motor vehicles are now termed go-karts. Lars Arens grows up surrounded by engines and motor racing and discovers kart racing. Holger provides inputs derived from his experience in engine optimisation and priming. Lars becomes thoroughly familiar with the small two-stroke engines – inside and out.

1997 Magny-Cours / Lars Arens

Can one not dare to strike out?

In 1996, on the heels of kart racing successes, Lars is offered the opportunity to attend the French racing driver instructional facility "La Filière" for a year. This period and the formula racing years that follow constitute valuable training material for the future.

1997 Hockenheim / Lars Arens

Where does the heart beat?

Automobile racing, too, sees the celebration of numerous successes. The priming, optimisation and technical support extended to racing engines and racing vehicles encounters brisk demand. So it comes to be that, in the latter half of the 1990s, technical services for kart racing and formula racing are offered under the aegis of Arens.


2002 Holger & Lars Arens

Why motor racing?

Kart racing and automobile racing excursions are inspiring. A tranche of new ideas sees the development of a two-stroke racing engine assimilated, causing much uproar on the motor boat racing scene. A modular concept makes it possible to replace motor cycle series cylinders with outboard racing motors. Arens engines stoke the competitive fire of European engine manufacturers within the fraternity.

2003 Arens-Motor 500 ccm

What is the outcome?

In several test bench, test run and competitive scenarios, Arens engines continue to develop, and ideas are systematically collated. The methodology of development plays an increasingly important role. Since 2002, Arens engines are available in one-cylinder, two-cylinder and four-cylinder variants.

Can others be crowned with success?

Within a short space of time, Arens engines have enabled a number of national and international successes to be scored in all cylinder capacity classes – 125 ccm, 250 ccm and 500 ccm. In 2003, an Arens engine carries both boat and driver to the runner-up title in the World Championship.

2010s A new time

And how are things progressing?

Since 2008, a team of engineers and technicians has been developing an innovative engine concept, aiming to create an outboard motor which is lighter, more compact and lower on emissions than are outboard motors of a comparable capacity that are currently available.