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Unicycle for Freestyle 20" - IRON MAD

Starting at: 199.00EUR Inc VAT (for EU-countries)
163.11EUR Ex VAT (for NON- EU-countries)

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frame length


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                                                    more info about the Iron Mad Project



406mm, 20"

Ideal :
to start races in freestyle
Available colors:
Light grey
Available variants:
Technical features
Frame length:
diameter 25.4mm
length: 200mm
Seatpost clamp:
2 bolted
color black. With no surcharge you can ask for a colored seatpost clamp. You can choose among the 13 colors made in Italy and confirm your choice in your order.
Mad4One Slim Black 
20"Aluminum single wall construction, width 32 mm, spoke holes: 36, color black or MAD-Round-32, 20" Aluminium, double wall construction, light however very strong, width 32 mm, spoke holes: 36, colour silver.
In case of heavy usage of your unicycle we advice to choose the reinforced MAD-rim Madround 32
If you wish a colored rim, please go to the site RIMS, choose the color and confirm it putting a note in your order. We ask a surcharge for this customization.‚Äč
SQUARE drive interface
for more info: SQUARE HUB
36 silver
Four-cross lacing spoke system
Gusset Pimp 20x2.1, color: white or 20" Mad4One Freestyle Tire
for more info:
Gusset Pimp, 20" Mad4One Freestyle Tire
89mm or 100mm
for more info: URC SQUARE CRANKS
GRIP-Freestyle 417 Pedal or ASTRA-810 Pedal
5,150 kg
Leg length:
The frame is a super stiff construction made of CrMo 4130 (Chrome Molybdenum), called Chromoly, that is much stronger than the most commonly used Hi-Ten. It gives the rider a very responsive feel enabling greater control.
As regards the FRAME: we have paid the utmost attention to the SHAPE. Here we have implemented all the details that we applied in the development of the Mad4One Alu-frame.
  • The most critical point in the unicycle frames is the junction between the seat tube and the crown. IRON MAD has a "one-piece", double butted reinforcement seat-tube (see drwg. below), that makes it one of the strongest CrMo unicycle frames on the market.
  • The flat crown is excellent for foot placement during one-foot and stand-up tricks. It is also wide enough to limit the painful sensations you may have and has two drilled holes machined from solid, that offer great anti-slip sealing.
  • Thanks to the rounded edges of the crown, the foot, that controls the wheel and manages the gesture, can move freely and without restriction.
IRON MAD is available in a range of standard frame lengths, but we can also custom cut a frame to the size of your choosing.  If you require a specific length frame, please just ask and we will be happy to sort you out with your very own custom fit frame.
The Cross-Over Interlacing of the spokes provides high solidity and robustness to the entire WHEEL-system.
The pedals are of high quality and great stiffness.
Last but not least we are ready to customize your unicycle. You can change the color of the seat-post clamp and the rim choosing the made in Italy color you prefer among the 13 different ones we propose.
We have noticed that some Producers insert in their frames a very long seatpost in order to increase the robustness and stiffness of the frame. This is not necessary for our frames. It is sufficient to have a length of 10-15 cm to ensure the best stiffness. All seatpost in excess is just unnecessary weight.  
A Unicycle of high Quality with the BEST Quality-Price Ratio

Which our goal?
The Unicycles 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.
look the chart above

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-adult
    intermediate level
  • Price range: from 150 to eur 249
  • Wheel size: 406mm 20"
  • Hub: Cotterless
  • Cranks length: 85-95
  • Designed for brake: No
  • Seatpost diameter: 25,4

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