Originally Posted by
Phil_gretz
If you interpret the numbers above, you see that you will have both a long top tube and a long stem for your frame seat tube size. Go to the M frame, after you've measured the (effective) top tube length. Note the zero setback seatpost. Check this on the geometry of the Focus frame. It may put you where you don't want to be relative to the crankset. Keep the crank arms as short as you can (i.e., don't go 172.5 or 175).
You can improve flexibility by simple stretching over time.
Just I've checked the S and M measures of Focus, here is the b2b comparison at below. Interesting thing in here is; I'm out of range at top tube based on competitive bike fit calculation and which is no make sense for me. As I said before during test trial I felt uncomfortable about reach/top tube lenght but calculation says opposed. It may related about my inexperience on road bikes, maybe it's normal to feel like uncomfortable at the beginning.
Stack 531 - 547
Reach 380 - 390
Effective Seat Tube 510 - 540
Effective Top Tube 537 - 552
Head Tube Lenght 130 - 145
Wheelbase 977 - 987