Only One 20 inch unicycle













This unicycle is delivered pre-assembled , you still have the saddle and pedals to put in place. It is complete and ready to use . It is covered by our 1-year warranty that we apply to all items on this site unless otherwise stated. For smaller users, it may be necessary to cut the seat post. To do this, opt for a pipe cutter or a hacksaw.
Teen and Adult Unicycle:
Unicycle designed for teenagers and adults. A wheel with a diameter of 20 inches corresponds to approximately 50 centimeters. This is the most commonly used wheel size. Quite simply because it is the most manageable wheel size.
Smaller wheel sizes are for children as they are too small to use a 20 inch wheel. Larger wheel sizes are for walking because they allow you to go faster, but be careful, they will be less maneuverable and less easy to use when learning to ride a unicycle.
NetJuggler information:
Only One is a German brand and it is good to note that the brand's unicycles are robust and durable .
If you later need to change the tire or tube, NetJuggler offers spare parts for this model. If you are a child, later, as you grow up, you may want to be able to adjust the saddle higher. We sell the seat posts , which saves you from having to buy a whole set of parts. To find out which parts are compatible, we have a very detailed online catalog, but you can also contact us directly to receive our advice.
Tested according to standards EN 71-1,2 and 3 as well as TÜV/GS.
Technical characteristics of the Only One mono:
- Wheel diameter: 20 inches/50 cm.
- Well padded and comfortable saddle with interchangeable tips.
- 300 mm seat post with grooved surface ( does not rotate ) Ø 25.4 mm, in steel.
- Aluminum quick clamping system.
- Thermo-lacquered unicrown fork.
- Aluminum rim, 36 spokes.
- Cranks for square steel axle 114 mm.
- QU-AX tire 20"x1.95".
- Mass: 6.2 kg.
For what type of practice?
Ideal unicycle for beginners/adults depending on the size of the crotch.

Minimum inseam size: 62 cm.
For smaller users, it may be necessary to cut the seat post. To do this, use a pipe cutter or a hacksaw.
Help with assembling your unicycle:
On a unicycle, as on a bicycle, the only parts not covered by warranty by the manufacturers are the cranks . This is why we have produced a downloadable document with advice and information for screwing your pedals onto your unicycle:
Download Cranks / Pedals Document
Hello, my 11 year old daughter (not very tall) with very little practice (not at all comfortable during her circus classes) would like to get there and gain confidence... So I'm looking to find something for her to practice on, she's 65 cm tall (which seems tall to me) but I don't know if she wouldn't be more comfortable on a smaller size (and a wider wheel?) What do you advise? Thank you very much for your advice!
Good morning, For your daughter's 65cm inseam measurement, a 20-inch wheel will be the most suitable. A smaller 18-inch wheel might give her a more secure feel, but once she's comfortable on the 18-inch, she'll probably want to move up to a 20-inch, which is more comfortable and versatile for beginners. We offer two ranges on our site: Only One: This range is our entry-level version, but it's already good quality. You might find it cheaper elsewhere, but we supply circus schools, so our equipment is really useful for beginners. Luxus: This range is of higher quality than the Only One range. For example, on the Luxus range, the tire is slightly wider, which allows for better grip and makes learning easier. You can also slightly under-inflate the tire at first, which will prevent the unicycle from spinning too much. You first learn to go in a straight line before learning to steer and turn. For training, it can be helpful to hold onto something heavy or stable on wheels, such as a bin or a supermarket trolley. Why not ask your local supermarket if they can lend you an old trolley? They often have old ones they no longer use. Thank you very much for your question and I hope these tips will help you choose the right unicycle for your daughter.
Thank you for your reply,
We're going for the 20 inches! With training in the supermarket parking lot on Sundays ;)
You say that you need 62 cm between the crotch and the ground to take a 20 inch and yet on another site they say that on a 20 inch the "saddle-ground" height is 80cm to 98cm. Does that mean that if we take a 20 inch the child will start either on tiptoe or with the unicycle very inclined or???
Unicyclist's crotch
You can trust our information. The person's feet will be flat on the pedals if the inseam measures 62cm with this model. If the inseam measures less than 62cm on the person then they will be on tiptoe to use this model. If the person's inseam is less than 62cm then they will need to opt for a unicycle with a smaller wheel :-)
Hello, you do not indicate a maximum weight for using unicycles. Is there one?
The maximum weight is 95 kilos for the 20-inch luxury.
Good morning,
I want to start unicycling. You say it's best to start with a 20" but I'm tall (77 cm crotch to the ground). Can I still start with the Only One or do you recommend another product? Thanks in advance for your reply.
Use a bigger unicycle wheel because you're tall?
A unicycle with a 20-inch wheel is easier to use for beginners, even if you're taller. A larger wheel size will allow you to move faster, but you'll lose maneuverability. If you're just learning to ride a unicycle, we recommend starting with a 20-inch wheel.