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406 Mini Mountain Unicycle Fat 20" x 4.00

Starting at: 334.00EUR Inc VAT (for EU-countries)
273.77EUR Ex VAT (for NON- EU-countries)

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  • Description
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Designed to turn the youngest Mountain Unicycle-Riders of today into the experts of tomorrow
The FIRST Mini-Mountain Unicycle with all features of a Traditional Mountain unicycle of high quality.
It takes the advantages of a bigger Mountain unicycle and makes it accessible to young/short riders. Before they grow a bit and graduate to the bigger wheel sizes.
The appropriate tool to learn how to control the unicycle with the Disc Brake.
Based on the successful experience made with Mad4One's Mountain Unicycles.
Mini Mountain Unicycle ADVENTURE, 20", with Disk Brake Attack

Wheel size:  20"
Ideal for: for your "first steps" with the Mountain unicycle, min leg length 63 cm
Available colors:   mustard, silver, pink
Available variants: you can upgrade/customize it according to your needs and wishes

Frame: Steel Cr-Mo 4130 (chrome molybdenum steel), thanks to this alloying elements it has an excellent strength to weight ratio and is considerably stronger and harder than not alloyed steel, round, with Disc Brake Attack (Disc and braking system excl.) Size XSmall
Seatpost:  Steel, diameter 25.4mm, length 200mm (300mm or 400mm on request)
Seatpost clamp:  28.6mm, Alu, Double bolted
Saddle: Mad4One Slim black or white or Handle Saddle M or S
lease note that you do not find in the photos all options we propose here.
For more infos about the saddle you may mount:
If you have questions or doubts, do not hesitate to contact us.

Wheel:All our wheels are handcrafted by us in our labs in ITALY. For more info please click here: WHEELS.
Rim:  20" double wall, width 46mm, black, 36 spoke holes, or same rim but with big holes. If you want to give more character to your mountain unicycle you can choose a colored rim. Please go to the site RIMS. Here you find our 12 Colours Made in Italy
Spokes: 36, Four-cross-lacing-spoke system 
Bearings:  42mm
Tire: Vee Rubber 20x4.00

Cranks: Unistuff 125, Mad4One Tecno 2 or 3 holes or Mad4One Agile 2 or 3 holes 
Pedals: Penta BX
Weight: 5,9kg
Leg length min 63cm

Disc brake system: it does not make much sense to buy this mini-mountain unicycle without the Disc Brake as per the explanations above. However, we offer it without so that you can mount another model if you prefer. 

Have you in mind to mount your HandleSaddle laterally? In this case, a brake system with an openable brake clamp is the right choice. 


A Unicycle of high Quality with the BEST Quality-Price Ratio
We propose 6 different braking systems. Here the link: SHIMANO
Do you have any doubts as to which is the right choice for you?
Write to, we are at your disposal 7/7 and with pleasure, we will give you advice and helps to make the right choice.
In CrMo with Disc-Brake Attack.
- projected and assembled in Italy with high-quality components and innovative mounting schema.
- the FOUR cross spoke pattern that gives high stability to the wheel.
- Spokes and nipples in carbon steel which ensure high mechanical strength and durability.
- Important Plus is given by the HUB, CrMo ISIS Disc MAD4ONE.
the large volume of air makes our riding much more smooth, even on rough terrains.
Combined with a large (but not too much) Rim (46 mm) the tire form becomes more rounded and easy to use, even when cornering.
You will have high comfort and great fun!
Excellent quality, in plastic with a large sole, very robust however without metallic PINS.
Very good price/performance ratio.
The integrated handle provides high comfort (no hole, more security and more space for the fingers).
URC, which our goal?
The URC by Mad4One in CrMo are designed with a larger audience in mind. We closely studied the balance between QUALITY and price to be able to provide the BEST Quality-Price Ratio you can find on the market, however with the same FLEXIBILITY you know from Mad4One.
We will do our Best to build your unicycle as you like and .... dream!
Having the appropriate tool is the first step for aspiring athletes to achieve their goals. This is our spirit!
We wish you great riding with Mad4One and  URC by Mad4One.

Your needs in safe hands

The Advantages with Mad4One



    Tailor-made Unicycles


    Advice and Support, before and after your Purchase,  24/24H, 7/7


    Worldwide Delivery


    Direct Contact with the Producer of your Unicycle


    High-level Competence and Reliability

Your satisfaction is important for us.
We are proud to put our Know-how at your disposal,
to make sure, you will be happy for long time.


  • Ideal for: lerner-children
  • Price range: from 250 to eur 399
  • Wheel size: 406mm 20"
  • Hub: ISIS
  • Designed for brake: disc brake
  • Seatpost diameter: 25,4

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