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Mad4One PowerSquare Freestyle frame 100

Starting at: 179.00EUR Inc VAT (for EU-countries)
146.72EUR Ex VAT (for NON- EU-countries)

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Mad4One PowerSquare

Freestyle frame 100

The State- of-the-Art by Mad4One 

Katrine Jensen and Ryan Olfers speak about their experience:


 ..... and here a nice video they offer us :)

The evolution of the Mad4One Freestyle in Aluminium,

that placed 1st at Unicon 2014 with Kaito Shoji,

1st at Unicon 2016 with Ryan Olfer and .....



  • Highest DURABILITY thanks to better fatigue strength and corrosion resistance of the NEW ALUMINIUM AA6069-T6, together with the THREE-LAYER REINFORCEMENT of the frame-core
  • Rock-solid grip under pressure and easy glide-off after pressure release thanks to the MAD Hole-Grip-System of the crown 

Material NEW Aluminium-Alloy AA6069-T6
Size: 20-inch (406mm)
Frame: square (flat)
Seat tube length: 380mm, 450mm, 500mm

Reinforced seat-tube (three-layer Alu reinforcement of the frame-core)
Inside diameter seat tube:  27.2mm (= Seat post diameter)
Outside diameter seat tube:  31.8mm (= Clamp inside diameter)
Bearing pitch:  100mm (center - center)
Max. tire thickness: 20 x 2.30, 19 x 2.60

Anodization: Made in Italy- in our 13 different colors 
Diameter Bearing-holder:  42mm (= Bearing outside diameter)
Weight (g.)

 Seat tube 380mm  - 755 g (incl. Bearing holders and bolts)
 Seat tube 450mm  - 796 g (incl. Bearing holders and bolts)
 Seat tube 500mm  - 825 g (incl. Bearing holders and bolts)

Have you in mind to replace the frame of your unicycle with a Mad4One?
If you have in mind to replace the frame of your unicycle with a Mad4One frame, in most cases you have also to change the seat-post and the clamp.
With our two
Upgrade Kits, this is not necessary.
  • If your unicycle has ø  25.4mm seat-tube (i.e. QuAx, QX, Nimbus, Ajata, Agravic, etc.), you should order the 25.4 Upgrade Kit
    This KIT consists of :
    1 frame support adapter (ø 25.4) + 1 clamp (ø 31.8)
    All this for only 5,00 euros.
  • If your unicycle has a ø 22.2mm seat-tube (i.e. Nimbus X, Ajata StandUp, no brand...), you should need the 22.2 Upgrade Kit
    This KIT consists of:
    1 frame support adapter (ø 25.4) + 1 clamp (ø 31.8) + 1 seat-post (ø 25.4x200).
    All this for only 10,00 euros.


KIT 25.4          


KIT 22.2


Strengths of this frame

Designed and developed by Mad4One for FREESTYLE. 

Light, however stiff and strong, the BEST CHOICE for a LONG-LASTING FRAME.

Seatpost 27.2 and vertical tube 31.8 make this frame much more steady than the ones with smaller diameters. 

The most critical point of the unicycle frames is the junction between seat tube and crown. The MAD frame has a triple butted reinforcement seat-tube that makes it one of the strongest. 

The MAD frame offers a larger flat crown. Standup and coasting tricks become much easier. Thanks to this wider surface you can perfectly control your freestyle. Perfect round edges of the frame make your foot jesture really smooth and fluid. 

The crown has two "false holes" made of solid,  which offer a rock-solid-grip under foot pressure. 

We know that for stand-up there is not a "standard" distance between crown and tire that can be considered the BEST by all freestylers. This is strongly linked to the style of each rider. However, we are convinced that the shape of the new MAD frame will be well appreciated by almost all freestylers.


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.  


Leg length: 

  • Ideal for: intermediate level
  • Price range: from 150 to eur 249
  • Frame: ALU square
  • Seatpost diameter: 27,2

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