The kBox3 is the discontinued generation of the kBox flywheel training device.

kBox 3

Following the first kBox introduced as the Kinetic Box in 2011 and two subsequent versions, the kBox3 was introduced in 2014.

The kBox3 was preceded by the kBox4 in 2016.



The kBox3 can be equipped with up to four flywheels in three different sizes: heavy, medium and light, made from laser cut and powder coated carbon steel:

  • Heavy: 0.050 kgm2
  • Medium: 0.025 kgm2
  • Light: 0.010 kgm2

Floor Attachment Kit

The Floor Attachment Kit is used to fixate the kBox to facilitate certain exercises where the body weight may not fully stabilise the kBox. These are made from laser cut and galvanized carbon steel. The price of the Floor Attachment Kit is 70 Euro.

Extension Strap

The Extension Strap is used to enable a higher top position for tall users performing overhead exercises, like for example the military press. The price of the Extension Strap is 20 Euro.

For the further kBox accessories, go back to products.


  • Size: floor area 100 x 50 cm, top area 90 x 45 cm, height 22 cm.
  • Weight: 15.7 kg (34.6 lbs).
  • Made from powder coated aluminum, with details made of anodized hardened carbon steel and aluminum, and high-friction rubber.
  • Compatibility: Built-in rotational sensor, ready to connect to our kMeter feedback system as well as SmartCoach.
  • CE-marking as a medical device.



Go back to the kBox.


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 / $1 585
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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 / $2 575
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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 / $3,345
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The kPulley 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 €1 750 / $1 955
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