Wherever you go, the Kratos Portable makes it easy to take your training practice with you. This version of the Kratos is in a class of its own--small enough to fit inside your gym duffel bag, the Portable packs a powerful flywheel training punch on the go. Measuring just 7.8" long, 5.3" tall, and 7" wide, the Kratos Portable is the ultimate travel-friendly flywheel training unit in the Kratos line.
When it's time to train, simply secure the Portable to a sturdy object using the included ratchet straps for instant access to a complete workout whenever, wherever. The mega-versatile Kratos Portable is the perfect addition to home gyms and strength facilities alike.
Optional: Choose the Kratos Portable With Upright option in the dropdown menu above and add an ideal vertical mounting structure perfect for any athletic facility to your Kratos Portable training setup. Measuring 80 x 2.5 x 3, the Accessory Upright is manufactured using the highest grade steel with and accented by a durable powdercoat finish.
Watch this brief video to see the Portable in action:
To learn more about how flywheel resistance training works and why it is such an effective metabolic training tool, click the image below. While this product page contains basic information regarding this unique, patent-pending flywheel training system, to get the full experience you'll want to visit our Kratos overview page.
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We have happy to offer simple financing through our partner bank Klarna. To take advantage of this payment option, simply select it at checkout. Learn more here.
Option 1: Pay in 4 interest-free installments
Option 2: Traditional 6 or 12 mo financing. A 0% interest * option is available when order is paid in full within 6 or 12 months, pending approval.
* Interest will be charged from transaction posting date at 19.99% APR if not paid in full by end of 6 or 12 month promo period.
More information on the Kratos product page.
There are many pathways and strategies for stimulating muscle hypertrophy. Of them, mechanical tension, total volume, and metabolic stress are the primary catalysts. The Kratos excels at stimulating metabolic stress under high mechanic tension making it an unconventional yet effective tool for hypertrophy training. The Kratos may be used as a standalone device however it can be a formidable 1:2 punch when combined with traditional barbell, dumbbell or machine training. Traditional methods of training emphasize concentric muscle load to produce an overloading hypertrophy stimulus whereas the Kratos provides an overloading eccentric muscle load. Combining these two types of muscle loads will provide a much greater stimulus than if you were to target a single type.
One unique application of the Kratos is in grappling sports such as wrestling, and the various subdivisions of MMA. Combat sports require athletes to resist movement of an opponent. At the physiological level this movement resistance is translated as isometric/eccentric muscle load. Resisting the force of an opponent can be simulated on the Kratos through the overloading action of the flywheel. In practical terms the stored energy in the flywheel feels like a constant force pulling on your body while you are performing exercises. This is far different than a standard cable machine or free weight implement where the load is static.
An emerging area of study for eccentric overload training is teaching movement deceleration. Deceleration is a primary component to agility and change of direction for field sport athletes. The Kratos may also influence post activation potentiation (PAP) by providing a significant neural response during eccentric overload. Overloading this phase of movement may prime the nervous system before jumping, bounding, or doing other explosive type exercises. This neural priming allows users to express greater power output when external load is removed.
The ability to change the intensity of the Kratos without having to switch between different machines, bars, or weights makes it a perfect candidate for applying time under tension training techniques. By using variable load management, you can effectively perform very hard total body exercises over a longer period of time. To do this with traditional implements you would need to combine different dumbbells, bars, or machines to effectively scale load. The benefit of the Kratos is the ability to sustain continuous work without taking time to transition to different implements or weights. This will lead to higher training density which should be a primary goal of anyone who wants to improve their conditioning. Greater training density ultimately means your time in the gym will be spent efficiently.
When it comes to exercise intervention during rehab and recovery scaling load is one of the first variables strength coaches and clinical experts will adjust. A unique advantage the Kratos has is letting the user adjust load based on effort and how challenging they feel the stimulus is. This is more of an agile approach to scaling exercise load than traditional fixed training implements such as barbells and dumbbells. Specific case studies involving lower back injuries show benefit of the Kratos to re-introduce load by limiting the total axial force through the spine. Other unique strategies include reintroducing load to tendons without relying on excessive amounts of concentric muscular action. Because the Kratos overloads the eccentric portion of movement users are able to target connective tissues post injury with much higher eccentric loading than would be possible with barbells, machines, or dumbbells.
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I understand the Portable comes with one medium flywheel. Are there any loading restrictions compared to the other Kratos models when it comes to the additional flywheel sizes (XL for example), given the portable form factor?
From Kratos directly; Mechanically there are no limits. The portable can handle the same loads as the original Kratos. The only limiting factor is hows it is mounted. If the portable is mounted to a large post or tree, the XL may rub on whatever it's mounted to if swung too far to the left or right. My suggestion, buy the vertical tube.
Can I attach the flywheel to my workout rack or will I need to attach it via the upright option?
Attaching the upright to the rack is the prefered method.