Ratio Astrum ISD With Seatpost Review

ratio astrum isd frameset

Ratio have produced another fantastic road racing frame in the Ratio Astrum ISD frame, constructed with a carbon monocoque frame, what makes this model unique is the integrated ISD seatpost, which guarantees a more comfortable ride. This carbon monocoque frame is light in weight, weighing a mere 1,080 grams, whilst still maintaining a high level of strength and stiffness. These combined factors make the Astrum one of the most effective road racing bikes, its rigidity and lightweight means that cyclists can reach unbelievable speeds when racing. While the headset 1 1/8 – 1 1/2 asymmetric system guarantees that the frame is responsive, cornering perfectly even at high speeds. The Ratio Astrum, with integrated seatpost is guaranteed to become one of the top frame choices for competitive cyclist.


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