Stack and Reach Ratio
The Stack-to-Reach Ratio defines the character of a bike’s fit. It is calculated by dividing the Stack by the Reach $$Ratio = \frac{Stack}{Reach}$$.
Aggressive (Race)
Ratio 1.45 or lower. Common in aero bikes like the Tarmac or Madone.
Comfort (Endurance)
Ratio 1.55 or higher. Common in endurance bikes like the Domane or Defy.
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Analysis