1. Worldwide delivery
  2. 100% satisfaction guarantee
  3. 12 month warranty
  4. Secure payments

The kBox4

The kBox4 is the latest generation of premium devices for flywheel training, based on sound scientific support. The kBox4 comes in three different models, namely the kBox4 Active, kBox4 Lite and kBox4 Pro.


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.

  • 1 -2 Large Flywheels
  • Inertia up to 0.100 kgm²
  • kMeter II Compatible
  • 76 x 51 cm Footprint
  • Weighs 15kg
  • Starting at €1 410 / $1 635

kBox4 Lite

Offers the lowest weight and best portability which makes it perfect for frequent travel without compromising the training.

  • 1 -4 Large Flywheels
  • Inertia up to 0.200 kgm²
  • kMeter II Feedback System
  • 76 x 51 cm Footprint
  • Weighs 9 kg
  • Starting at €2 300 / $2 665

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.

  • 1 -4 Extra Large Flywheels
  • Inertia up to 0.280 kgm²
  • kMeter II Feedback System
  • 98 x 63 cm Footprint
  • Weighs 15.5 kg
  • Starting at €2 990 / $3 465

About the kBox


First introduced in 2011, the kBox flywheel training device is in use by performance coaches, physiotherapists and personal trainers worldwide for a wide range of flywheel training applications. Understand the opportunities in your field: Read more.


Key Benefits

With the kBox, you work against the variable inertia of heavy steel flywheels, instead of lifting 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;

Versatile multi-purpose training device, for exercises training both upper body, core and lower body.

Portable and easy for one person to carry or stove away.

Its 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.

Doesn’t emit any sound at all.

kBox Exercises

Exxentric products are probably best known as a tool for squats, but it is also optimised for over 30 different exercises. This includes 10 of the most important drills for strength training. Exxentric products give you infinite opportunities for effective exercise. learn more about some of the best flywheel training exercises you can do with the kBox. Don’t let gravity hold you down.

Read more

Try before you buy

Find a flywheel training facility near you

Are you looking to try out the kBox or the kPulley before placing your order? Click here to discover find facilities that offer Exxentric flywheel training sessions in your region:

Read More