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Mad4One PowerSquare Race frame

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

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frame length

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Mad4One PowerSquare Race frame


  • 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

Material NEW Aluminium AA6069-T6
Size: 24 x 1.75" or 26 x 23mm (23-559)
Frame: square (flat)
Seat tube length: 210, 270 mm
Reinforced seat-tube (three-layer 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:  90mm (center - center)
Max. Tire thickness: 24 x 1.75" or 26 x 23mm (23-559)
Anodisation: Made in Italy- in our 13 different colors
Diameter Bearing holder:  42mm (= Bearing outside diameter)
Weight (g.)
Seat tube 210 - 670g (incl. Bearing holders and bolts)
Seat tube 270 - 705g (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 RACE.


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

The legs are slightly curved in order to make the frame less bulky.

Very interesting the large crown for the One-Foot race.

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. 



leg length:

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

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