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The RackFly flywheel training system offers significant versatility in a small footprint. Designed for seamless integration with squat racks and fixed structures, it provides smooth, variable resistance at every height and angle.
Motorized Technology
Exerfly’s optional Motorized Technology delivers up to 80% additional eccentric overload on every rep. This motorized boost can be added in as little as 1% increments, ensuring safe and precise user progression.
User-Defined Resistance
Unlike traditional weight stacks or capped motorized systems, Exerfly’s resistance is dictated by your concentric effort, not a limit. The flywheel’s inertia scales with your force output, offering theoretically unlimited load potential.
Adjust your eccentric load with up to 80% greater resistance than your concentric effort, all at the touch of a button.
Exerfly’s resistance is dictated by your concentric effort, meaning the resistance scales with your force output at a 1:1 ratio (concentric:eccentric).
The RackFly mounts to any vertical or horizontal structure, so you can take your training wherever you go.
With 5 compact flywheel sizes that stack up to 8 at a time, you can achieve a wide range of resistance without the space and hassle of traditional weights.
Explore our range of premium flywheel training equipment
2020 Prairie Ln, Eau Claire, WI 54703, USA
© 2026 Exerfly. All rights reserved.
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.
