The kBox has many features for building strength, mass, and power, which is critical in football, with many teams incorporating the kBox and the kPulley into their training already.

With flywheel training on the kBox and the kPulley, coaches get the tools to work many aspects of muscular performance.


Being a sprint-based and momentum-based sport, the applications for the kBox and the kPulley can be wide-ranging. These devices can be used to add strength and mass to players, both upper and lower body strength. Around the sprinting aspect of the sport, it is useful for both explosive power, eccentric strength, and change of direction ability but also for injury prevention when it comes to sprint related injuries.

The usefulness of the kBox and kPulley for treating upper-body injuries is obvious, as they allow for heavy squats or split squats, but they are also useful in players with knee pain due to the meniscus and patellar tendinitis due to the lower shear forces and high eccentric load. Squat, row, or deadlift for strength and mass. Mid-thigh pulls, hip extensions, lateral squats, split squats can all be used for power while straight leg hip extensions and hamstring curls for rehab and injury prevention.

The kBox and the kPulley are also used in rehabilitation of ACL injuries, with popular features including the user-set intensity and easy monitoring functionality via the kMeter.


The Exxentric Harness reduces a lot of the torque and stress on the lower back allowing athletes to focus on training quality and high eccentric loads. Easy and safe to perform and monitor in a team setting. Easy to train during periods of upper-body injuries or rehabilitation after an injury.


Users of the kBox and kPulley in American football already include the Kansas City Chiefs, Oakland Raiders, Philadelphia Eagles, and the Seattle Seahawks of the NFL, as well as individual NFL athletes and many NCAA college football teams.

Proceed to flywheel training equipment, or go back to applications for sports performance.