You are looking for a flywheel device and already heard about STREXBOX and kBox, but you don´t know what is the best fit for you?
We get you up to speed on flywheel training devices
and cover 10 points within 4 minutes, enjoy.
1 Basic functionality:
STREXBOX as well as kBox use exactly the same core technology with flywheels. A pull belt is attached to a shaft which is connected to a flywheel. During workout the forces created by the flywheel allow you to perform isoinertial training, eccentric overload etc.
2 Overall Design:
STREXBOX has mounted flywheels horizontally.
kBox has mounted flywheels vertically.
Advantage STREXBOX: vertical flywheels reduce the risk of injuries. Low overall height makes the STREXBOX easy to store. Low overall height and vertical flywheels give you more movement space during exercises, which can be beneficial for example at Lunges.
Advantage kBox: it is easier to exchange the flywheels, no need to turn the kBox upside down.
3 Dimensions (length x width x height):
Standing Area: STREXBOX Home 59x39cm vs kBox Active and kBox Lite 70x45cm
Overall Dimension without flywheels: STREXBOX Home 60x40x9cm vs. kBox Active and kBox Lite 77x52x21cm
Standing Area: STREXBOX Studio 90x55cm vs kBox Pro 90x55cm
Overall Dimension without flywheels: STREXBOX Studio 95x55x9cm vs. kBox Pro 98x63x23cm
STREXBOX uses a double-sewed pullbelt. Accessories are connected by a clamp which is fixed below the accessories. Height adjustment by hand by pulling the lever on the clamp. Optional extension belts included for overhead workouts.
kBox uses a single-sewed pullbelt. Accessories are connected by a pulley. The second end of the pullbelt is fixed at an adjustable clamp at the bottom of the kbox. Height adjustment by foot, you need to step on a lever which activates the height adjustment mechanism.
Advantage STREXBOX: A pulley is not needed, you have direct connection to the flywheel, STREXBOX eliminates the power loss which would be caused within the pulley.
Advantage kBox: You do not need extension belts for overhead exercises.
5 Force Measurement:
STREXBOX offers Force Plates which directly measure and show live force-time-charts for each repetition, muscular dysbalance between left and right foot and interactive balance games.
kBox offers kMeter which measures the rotation of the flywheel and estimates and shows max. concentric and eccentric force on each repetition.
STREXBOX as well as kBox offer free app download and are connected via Bluetooth to iphone, ipad, Android tablets or Android phones.
STREXBOX uses its 0,075kgm² flywheel as standard flywheel and offer 0,025kgm² as further option.
kBox uses its 0,050kgm² flywheel as standard flywheel and offers 0,070kgm², 0,025kgm² and 0,010kgm² as further options.
At all STREXBOX models you can add up to 3 flywheels on one STREXBOX. This leads to a max. inertia of 0,225 kgm² on all models.
At kBox depending on what model you buy, you can add between max. 2 and 4 flywheels on one kBox. For the kBox 4 Active this leads to a max. inertia of 0,100kgm², for the kBox 4 Lite to a max. inertia of 0,200kgm² and for the kBox 4 Pro to a max. inertia of 0,280kgm².
FYI: the majority of professional users prefer to train between 0,150kgm² and 0,200kgm² for squats and between 0,075kgm² and 0,150kgm² for arm exercises. Home users typically use 50% less than above inertia values.
7 Unboxing & Packing:
STREXBOX as well as kBox arrive packed very well.
8 Warranty & Shipping
STREXBOX as well as kBox offer warranty for 1 year for commercial use and 2 years for private use.
STREXBOX offers free shipping within U.S. and EU, kBox charges a small shipping fee.
All models of STREXBOX come with a hip belt and bar.
All models of kBox come with a hip belt and grips.
STREXBOX as well as kBox have multiple accessories available to ensure an effective full-body workout, check out their online shops.
10 Strategic direction:
STREXBOX: “eccentric training made affordable”1
kBox : “premium devices for flywheel training” 2
STREXBOX as well as kBox are both targeting the professional user as well as home user market with their flywheel product range, although the design as well as pricing of STREXBOX vs. kBox is different.
I hope this was helpful, the choice is yours!
1 Kneso GmbH [https://strexbox.com/] 08.03.2019
2 Exxentric AB [https://exxentric.com/] 08.03.2019
Written by Alexander Gigerl – founder and CEO of STREXBOX, 08th March 2019
PS: if you feel I have not been 100% objective or some updates happened I am not aware of, please contact us at firstname.lastname@example.org and in case your point makes sense we of course adjust our text to be always up to date! The goal of this article is to give a transparent and fair overview to help at buying decisions.