• With the Exerfly, I can re-enact every punch I make in the ring, but with constant resistance. And that’s not something you can do with any other machine. Joseph Parker
    Professional NZ Boxer and Heavyweight champion. Previously held the WBO heavyweight title from 2016 – 2018. Had multiple regional heavyweight championships including the WBO Oriental, Africa, and Oceania titles; as well as the PABA, OPBF, and NZ titles.

  • Eccentric overloading through Exerfly has been instrumental in my posterior chain development, meeting the demands of my new sport, the Bobsleigh. Using the Exerfly just once or twice a week, my deadlift from cycling to bobsleigh has gone from 220kg to 300kg in a matter of weeks, and my trap bar from 260kg to 380kg. Eddie Dawkins
    NZ track cyclist. Two time Olympian silver medallist, three time World Champion Track Cyclist, two time Commonwealth Games Champion, winning two silver medals and three bronze.

  • The Exerfly has clear benefit in that it teaches the body to absorb force. Everyone needs to maintain their elasticity and tendon health to prevent injury and collapsing into the ground, which means everyone involved in any kind of activity from walking to running will benefit from Exerfly and the force production-absorption models it allows. Andrew Maclennan
    NZ Strength & Conditioning Coach. Worked with top NZ athletes and sports teams, including Canterbury Crusaders Rugby Team, individual All Blacks, NZ Rowing, Canterbury Netball, NZ under 21’s Netball, NZ Women’s Hockey, NZ Cricket Academy, NZ Triathlon Academy, Olympic Swimmers & Cyclists, Champion Boxers, and many other high-profile individuals such as Olympian Tom Walsh.

  • Eccentric overload promotes muscle turnover and allows you to get stronger at a faster rate. I can create a high velocity concentric movement and then get loaded through the eccentric phase – you can’t find that with anything other than a flywheel. Andre Mattson
    Strength & Conditioning Coach. Previous Strength & Conditioning Coach for the Charlotte Hornets, Seasonal Assistant Strength & Conditioning Coach for the New York Knicks. Previous Performance Coach at Velocity Sports Performance.

Isometric Contractions

Isometric exercises can be easily performed on the Exerfly to increase strength and flexibility at certain angles of your exercise. The isometric phase of a lift is when a muscle contracts but no movement occurs, for example, hanging from a pull up bar.

Isometric holds can be achieved by a partner holding the flywheel still while you squeeze, or you can set the rope length and pull against it.

Control and Stability

Using the Exerfly teaches control because users have to be able to control resistance at all angles of movement.

Initially, users may find it challenging to control at first but will quickly adapt as they improve their technique and learn to adjust to the constant resistance.


Analyze the effect of an eccentric-overload training program in elite junior soccer players.

Study markers of muscle damage and training adaptations to eccentric-overload flywheel resistance exercise in men and women.

To evaluate whether a preseason strength training programme for the hamstring muscle group - emphasising eccentric overloading with a flywheel - could affect the occurrence and severity of hamstring injuries in elite male soccer players.

Study comparing weights vs non-gravity resistance using a flywheel to work the quadraceps muscle in potential zero-gravity conditions.

Assess the early changes in muscle size and architecture during a 35-day high-intensity resistance training program.

Flywheel resistance training calls for greater eccentric muscle activation than weight training.

Blood lactate and hormonal responses to prototype flywheel ergometer workouts.

Neuromuscular and balance responses to flywheel inertial versus weight training in older persons.

The effects of eccentric versus concentric resistance training on muscle strength and mass in healthy adults.

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Exerfly Portable

The Exerfly Portable is a lightweight and robust piece of equipment for flywheel training.

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Exerfly Rack Mount

The Exerfly Rack Mount is a simple set up that can be attached to any gym rack to train horizontal & rotational movements,

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Exerfly Platform

The Exerfly Platform is a stable multi-use flywheel training platform built for everything from heavy duty workouts to rehabilitation.

No risk, hassle free

Exerfly Product Brochure

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