4FCIRCLE®-Calisthenics systems comply with all safety standards (DIN-EN 16630 (in combination with a instruction sign and DIN-EN 1176) which are necessary for use in public areas.
We are a member of national and international standardization bodies and are very careful to ensure that the safety standards are observed for all custom-made products. A fall-absorbing floor covering is required in the area of the installation.

Furthermore, additional trusses in the foundation area ensure stability, even in the case of large user groups and constant dynamic load.

We would be pleased to advise you on this topic in a personal meeting.


Bars and Calisthenics elements are permanently screwed to the posts. We use a VA screw with additional plug protection, which can only be released with a special tool. In addition, the screws are still glued during assembly.

With the 4FCIRCLE®-Calisthenics connection system, it is possible that four bars can be attached to a stand post at precisely the same height without the connecting screws coming into conflict with one another.


As standposts we use steel pipes with a 10 x 10 cm profile. The upper ends are covered with a fully welded cap.

As material for the bars, ladders and all functional elements, we use high-quality stainless steel tubes made of V2A.

Among the users, the basic material of the bars is partly controversial. In order to meet the different needs of the users, the bars can also be powder coated. This is basically possible in all common RAL colors.

We will gladly explain the advantages and disadvantages in a personal discussion.


Our 4FCIRCLE® Calisthenics systems are tailored to the needs of the customer and are therefore individual. Of course there are certain standardizations in the dimensions established by Calisthenics athletes in order to offer as broad a group as possible, optimal training and competition situations.

Many of our parks are unique and are produced in our production facility in NRW / Germany.

We are happy to plan and create your individual Calisthenics Park.