Backed by more than 30 years of manufacturing excellence, Exerfly’s USA-crafted equipment combines precision engineering with superior craftsmanship to deliver unmatched performance, durability, and quality.
Motorized eccentric overload, unlimited resistance, and real-time performance data.
Proudly trusted by world-class organizations

The only flywheel with motorized eccentric overload. Add 1-80% eccentric overload on every rep based on your concentric output.

Exerfly is built to endure, made with premium materials to stand the test of time. Proudly manufactured in the USA.

Exerfly devices have the largest loading capacity on the market with 5 flywheel sizes, and the ability to stack up to 8 flywheels at once.
Explore our range of premium flywheel training equipment
Exerfly’s motorized technology increases kinetic energy during the eccentric phase, adding up to 80% eccentric overload on every rep.
Learn more
Pull or push against the flywheel, just like lifting a weight. This is the concentric phase.
Concentric effort accelerates the flywheel, storing kinetic energy that is then returned in the eccentric phase.
Decelerate the flywheel on the way back. The greater the concentric effort, the greater the eccentric load.
Each rep is matched to your output, so every set stays maximal as you fatigue or get stronger.