Originally Posted by
rpenmanparker
Another thing about size. The seat tube angle is 74 deg. Many bikes this size have a 73 deg STA. The steeper STA has the apparent effect of shortening the top tube, but in fact you still have to sit where you have to sit relative to the bottom bracket. So in terms of reach to the handlebar the top tube length of this bike at 54 cm is really equivalent to 55 cm on a 73 deg STA bike. Truly this is a mid-range 54 cm frame IME.
Shortening the top tube for smaller riders makes sense. The bike feels stable, steering feels crisp and the bike fits like a glove! For a 5'7-5'8" rider, this is effectively a 54 cm bike.