Principia Monocoque Triangle


The rear triangle transmits your pedal strokes to the rear wheel. As the first manufacturer in the world, Principia has developed a technology that allows us to construct this part of the frame in one piece. Our monocoque design saves weight and increases stiffness compared with traditional tube-to-tube technology.


  • Weaved Principia Carbon with a tensile strength of up to 40 tonnes per cm2 (C40T).
  • The absence of joints between seattube, chainstays, and seatstays results in a much stronger frame.
  • The weight is reduced and the comfort increased through clever use of directional carbon fibres.


The Principia Monocoque Triangle (PMT) sets a new standard for low weight, stiffness, and strength. You become faster on the road and in the track. Experience the difference on our new top frame, the RS C40T and our high-end hardtail mountainbike, the MSL C40T.

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