Build Foundational Strength. With Exxentric Devices.
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Offering true variable resistance and eccentric overload – Exxentric flywheels are the ultimate training tool for Strongmen looking to improve their static and dynamic strength.


Accessory Work that Works!
Exxentric devices offer resistance that is uniquely suited to improving dynamic power, movement freedom that lets you directly target lagging muscle groups, and a capacity for eccentric overload that allows for more effective muscle growth and strength development.
Whether you are looking to bring up your quads while deloading the spine with belt squats, improve dynamic power with variable resistance, or supercharge your accessory movements with eccentric overload – Exxentric flywheels are a perfect addition to your base Event training.
Train Better. Lift Better.
Discover Why Elite Strongmen Choose Flywheel Training.-
Address Sticking Points
Variable resistance automatically adjusts to each muscle group – letting you directly target your sticking points with maximal specificity.
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Stability Under Load
Overload the eccentric, resist isometric tension, and pause at key parts of the range of motion to strengthen your press lock-out, loaded carry, loading, and more.
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Track Performance
Use our industry-leading kMeter feedback unit to track power outputs, auto-regulate training, and identify sticking points in real-time.
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Prevent Injury
Deload the spine with our wide range of training accessories and safely work around or rehab injuries with variable resistance and eccentric overload.
Build the Foundation with the kBox
Add volume and build foundational strength with minimized fatigue and overuse.
Max Strength, Max Safety
Safely implement heavy accessory work with exercises like harness squats – maximizing quad strength while minimizing axial loading and fatigue.
Explosive Power
Thanks to variable resistance, the kBox directly develops your dynamic power by letting you train every squat, hinge, and pull with maximal output and bar speed.
Eccentric Overload
Seamlessly add the strength, power, hypertrophy, and injury-prevention benefits of Eccentric Overload to squats, hinges, pulls, and presses.


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 stability and power training by twisting, pushing, pulling, and swinging in the horizontal plane.
Maximize Upper Body Development
Target the upper back, triceps, shoulders, and chest for bulletproof joints, unshakeable overhead stability, and improved stability under load.
Enhanced Training Efficiency
Simplify loading and supercharge your accessory work by performing rows, curls, extensions, raises, and rows with variable resistance.
Our Systems. Hand-selected for Strongman.
Our Systems.
Hand-selected for Strongman.

kBox Ultimate System
$ 2,949

kPulley Ultimate System
$ 2,670

kBox & kPulley Ultimate Combo
$ 5,184