Dominate the Court. With Flywheel Training.
Need help?
Blow up your vertical, improve lateral speed, and boost hitting power with explosive variable resistance, sport-specific movement freedom, and eccentric overload!


A Stronger Volleyball Player – Is a Better Volleyball Player
By harnessing the endless and variable rotational energy of a flywheel – Exxentric devices offer resistance that is more effective for explosive jump training, a movement freedom with greater carryover to game-specific action, and a loading profile that is safer and more intuitive for volleyball athletes.
By letting you train with a greater freedom of movement and eccentrically overload sport-specific actions -Exxentric flywheels let you replicate and prepare for on-court demands. Directly load lateral changes of direction, overload the amortization phase for improved force transfer, and explosively train harness and single-leg squat variations for vertical jump power.
Train Better. Play Better.
Discover Why Elite Volleyball Players Choose Flywheel Training.-
Explosive Power
With variable resistance that lets you train with maximal explosive power on every rep – Exxentric devices put inches on your vertical, not just pounds on your squat. -
Sport-Specific Lateral Training
Multi-directional resistance and specialty training accessories let you train a wide range of loaded lateral movements for game-defining change of direction speed. -
Eccentric and Amortization
Harness eccentric overload to supercharge the eccentric and amortization phase and blow up your vertical jump, change of direction speed, and overall power production. -
Prevent Injury
Prepare your joint and tendons for any landing, change of direction, or misstep with scientifically-proven eccentric overload protocols.
David Bass, Wake Forest’s Assistant Athletic Director of Sports Performance
Build the Foundation with the kBox
The kBox line gives volleyball players access to all the benefits of heavy compound training with none of the usual drawbacks
Max Strength, Max Safety
Safely implement heavy strength training with exercises like harness squats – maximizing foundational strength without straining the lower back and minimizing risk of injury.
Change of Direction
Thanks to variable resistance and a wide range of accessories, the kBox lets you explosively train lateral strength movements for unmatched change of direction and on-court agility.
Volleyball -Specific Movements & Drills
Like heavy lateral squats or specific ROM squats – the kBox offers unique opportunities to combine heavy strength training with maximal sport-specific carryover.


Create New Possibilities with the kPulley
Master every training angle, add variation, and elevate upper-body development with the kPulley line.
Horizontal Plane
Round out your in-game power by twisting, pushing, pulling, and swinging in the horizontal plane for more hitting power.
Maximize Upper Body Development
Target the triceps, shoulders, and chest for bulletproof joints, unshakeable upper body stability, and improved hitting power.
Volleyball-Specific Movements & Drills
Take advantage of adjustable heights and angles to perfectly replicate in-game actions like spikes or serves.


Our Systems. Hand-selected for Volleyball.
Our Systems.
Hand-selected for Volleyball.

kBox Ultimate System
$ 2,949

kPulley Ultimate System
$ 2,670

SingleExx Combo
$ 10,990