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Hip Extension

Suitable for rehabilitation, performance and fitness to increase overall hip strength and activation of the glutes muscles. The hip extension targets the glutes in a controlled and effective way which makes it beneficial when performing eccentric overload training.


The benefits of doing a hip extension and flexion on the kBox are the ability to load the exercise more than if performed on any other training equipment. Use delayed eccentric action targeting the horizontal drive phase in sprinting or assisted concentric for further eccentric overload.

Regular Hip Extension:

Performed using an ankle cuff.

For the regular hip extension, stand on the kBox with a slight elevation having an Ankle Cuff attached to your ankle (in the beginning use a wall or rack as support) and kick the leg backwards.

Harness Hip Flexion:

Performed using the ergonomic harness or hip belt.

To perform this exercise, use a harness and perform a hip flexion with the upper body (similar to a Good Morning) to really target the hip flexors, glutes and hamstring muscles. When the force is pulling you down try to resist and even break the eccentric speed completely.


Hip Swing:

Performed using the kGrips.

To really hit the glutes, hamstrings and improve core strength you can do the hip swing (similar to the kettlebell swing) by grabbing two kGrips, place yourself away from the center of the kBox and move the handles as if you were throwing them away from you.

To see this exercise done on the kPulley, click here.

Go back to exercises, or read more about the applications of flywheel training.





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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