After a while, the drive belt on your kBox may need a trim or replacement. Here’s how to fix it.

Check Regularly

The drive belt and its attachment to the shaft is the most sensitive part of the kBox. Be attentive and check regularly for signs of wear and tear.

Trimming the Belt

If damage occurs close to the end of the belt, you need to trim the belt by cutting off the damaged end and reattach the new end. Read the trimming guide for kBox4 or kBox3.


If trimming the damaged parts of the belt leaves a remaining belt that is too short, the belt needs to be replaced. Read the replacement guide for kBox4 or kBox3.


Most kBox devices are put under a lot of force and some vibrations, and on the kBox4 we recommend that screws and nuts are checked and tightened regularly, at least once a month. Watch the video guide for kBox4.


Contact us or your reseller for help, or go back to support.


kBox4 Active

The Newest model, the kBox4 Active is built on proven, reliable technology. The perfect tool in strength and rehabilitation at our lowest price point.

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

Often chosen for its smaller foot-print, the kBox4 Lite model is of a lower weight, portability and not to mention its competitive entry cost level.

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

The kBox4 Pro is our premium model with the greatest versatility. It’s ideal for sports teams and larger training and physiotherapy facilities.

  • Largest Floor Space
  • 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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