kBox4 Pro

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

kBox4 Pro with Flywheel

In our kBox4 generation of flywheel training devices, the kBox4 Pro model is often chosen for its automatic belt length adjustment mechanism and market leading maximum inertia, as well as its Foot Block support and larger foot area.



The price of a kBox4 Pro starter system including two Flywheels, Hip Belt, kGrips and Foot Block is 2,990 Euro plus shipping and local tax. The corresponding price for an advanced system which includes a larger set of accessories is 4,360 Euro.

For a complete price quote including any accessories you may need, proceed to order and delivery.



  • kBox4 ProSize: floor area 98 x 63 cm, top area 90 x 55 cm, height 23 cm.
  • Weight: 14.8 kg
  • Made from powder coated aluminum, with details made of anodized hardened carbon steel and aluminum, and high-friction rubber.
  • Built-in rotational sensor, ready to connect to our kMeter feedback system as well as SmartCoach.
  • Maximum inertia up to 0.280 kgm2, using four Flywheels of up to 0.070 kgm2 each.
  • Compatible with the Foot Block accessory.
  • CE-marking as a medical device.



FlywheelThe kBox4 Pro can be equipped with up to four flywheels in four different sizes, made from laser cut and powder coated carbon steel. The price per Flywheel is 80 Euro:

  • Heaviest: 0.070 kgm2
  • Heavy: 0.050 kgm2
  • Medium: 0.025 kgm2
  • Light: 0.010 kgm2

Extension Strap

Extension CordThe 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 further kBox accessories, go back to products.




Proceed to order and delivery or go back to kBox4.

Get a Quote

Pro systems starting at €2,990 / $3,500.
Proceed to order and delivery. ⏩