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Exxentric kBox4 Pro Platform excl. Flywheels
The kBox4 Pro is the premium kBox model with the greatest versatility, ideal for sports teams and larger training and physiotherapy facilities

€ 3.180,00

including 19% VAT, free shipping


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With the kBox, you work against the variable inertia of heavy steel flywheels, instead of lifting dumb weights against gravity. The kBox is renowned for its genial application of eccentric overload in regular training as well as its variable resistance, both backed by growing scientific support.

It also offers a number of important practical benefits, including:

  • It is a truly versatile multi-purpose training device, for exercises training both upper body, core and lower body.
  • It is completely portable and easy for one person to carry or stove away.
  • It's kMeter app-based wireless feedback system can be used to measure and save actual power output and more.
  • Switching between drills and users is quick and hassle-free.
  • The kBox practically doesn't emit any sound at all.

These benefits result in increased efficiency of training programs while lowering the total costs as compared to alternatives. Read more.

Voices about the kBox

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Digital Feedback

The kBox 3 includes an advanced rotational sensor accurately measuring your performance. With the kMeter app-based wireless feedback system this can be used to measure and save actual power output as well as estimations of several other key variables. The kMeter comes priced far below comparable systems and is intuitively easy to use for coaches and physiotherapists as well as directly by the athlete or patient.

Quick Switching

Thanks to the automatic belt adjustment of the kBox 3, switching between drills and users is quick and hassle-free. In addition, changing the resistance in terms of inertia requires only a quick shift of light flywheels, weighing only a couple of kgs each.This creates important efficiency advantages in team sports and group training programmes as well as for the individual trainee. You spend more time working out while your competitors are spending their days switching weights.

Silent Work

The kBox practically doesn't emit any sound at all. There is only a low hum from the belt, and you can hear when the flywheel changes direction. But you will certainly sound a lot more. Hence, there is no need for noise reducing measures such as rubber mats or noise reducing plates. It is easy to communicate with the subject performing the exercises. And it can be used anywhere, even in your living room.


In summary, the benefits of the kBox boil down to the possibility of more efficient and effective training programs, at a lower total cost than traditional purely weight-based alternatives.

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Health & Fitness

  • In recent years, personal trainers have discovered what flywheel training and a kBox investment can do for businesses in Health & Fitness. Read more.


  • The kBox has been embraced also by physiology clinicians for efficient rehabilitation of clients with many types of diagnoses. Read more.

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*) kBox3 uses the short foot block but with kBox4 his is made with a special accessory.
**) flywheels between generation 2 and 3 ie kBox3 and kBox4 aren't interchangable.

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It could be a regular deadlift or stiff-legged deadlift. The experience of the eccentric phase in the #kBoxDeadlift will be new for most people. A nice exercise for lower back and hamstrings. Read more or watch video.

High pull
Can be a total body workout on the kBox thanks to the variable resistance and eccentric overload. Kick in with the legs and the eccentric phase will kick you back. Works deltoids, trapezius and arms in the regular setting and most of your upper body and core in the CLAC overload setting . Watch Video. #kBoxHighPull

Biceps curl
With the Exxentric ultra light bar, this will be your new favorite exercise. Forget giving the biceps 12 sets in the gym. The kBox will do the work in 3 maximal sets with eccentric overload. Read more or watch video. #kBoxBicepsCurl

Triceps extension / over-head press
Slow and heavy with high force development with some core strength added. Perfect for a basic exercise to build strength and power in more complex exercises. Watch video. #kBoxTricepsExtension

Bent-over row
After a couple of sets of rowing with eccentric overload you won't be able to go back to the traditional weights. It is a heavy exercise but still with a lot of power and motion, especially in the eccentric phase. It strengthens upper and lower back, shoulders and arms. Read more or watch video. #kBoxRow


Target Groups: Athlete
Applications: Fitness Pro Sports


Datasheet K4Box_EN

KBox4 Lite Pro User Manual_EN