Flywheel training for swimmers

The kBox targets many important aspects of developing elite swimmers’ strength and is already used by Olympic level swimmers on several continents.

With flywheel training on the kBox coaches get a tool for both general and sport-specific drills for swimmers as well as for post-activation potentiation before races.


Developing athletes use the kBox in a more general way to get stronger in both compound movements and isolation drills. From high-end swimmers, we see examples of sport-specific strength development.

Post-activation potentiation before a race can give swimmers a huge benefit with a 35% faster start as shown in a flywheel training study.


The versatility, efficacy and mobility of the kBox are three key reasons why swimmers choose to incorporate kBox and flywheel training into their programming.

Swimming is heavy on the volume side, spending a lot of time in the water. By being able to practically build a gym by the pool using the kBox new possibilities opens up in the programming. On a high level there are also travelling a significant amount of time and being able to bring the gym with you is beneficial.

Also, the kBox can be an ideal and powerful tool for post-activation potentiation, just before a world championship race.


The kBox is already implemented by coaches of Olympic level swimmers as well as in developing younger athletes, in the US, Europe and Australia. For examples, please refer to the social media feed on this page.

Further reading

Proceed to flywheel training equipment, or go back to applications for sports performance.


kBox4 Active

Our entry level model for the serious personal trainer or demanding home user. The perfect tool in strength and rehabilitation at our lowest price point.

  • Entry Level Model
  • Holds 1-2 Flywheels
  • kMeter Compatible
  • Weighs 15 kg
  • Starting at €1 410 / $1 635
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kBox4 Lite

Offers the lowest weight and best portability which makes it perfect for frequent travel without compromising the training.

  • Enhanced Portability
  • Holds 1-4 Flywheels
  • Built in kMeter
  • Weighs 9.5 kg
  • Starting at €2 300 / $2 665
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kBox4 Pro

Our premium kBox model with the greatest versatility and largest performance area. It’s ideal for sports teams, premium fitness clubs and physiotherapy facilities.

  • Largest Performance Area
  • Holds 1-4 Flywheels
  • Built in kMeter
  • Weighs 15.5 kg
  • Starting at €2 990 / $3 465
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The kPulley2 is the ideal horizontal solution for improving strength by offering flywheel training for rotational and pull exercises.

  • Horizontal Model
  • Holds 1-2 Flywheels
  • Built in kMeter
  • Easy to assemble
  • Starting at €1 890 / $2 190
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