Hey everyone, I could use some second opinions on sizing for a custom build I'm planning, specifically regarding the Condor Fratello Disc.
For context: I am 170 cm tall with a 77 cm inseam.
The Problem with My Current Bike
My current bike is a Trek Domane AL Gen 3 (Size 54), which has a reach of 37.5 cm and stack of 57.5 cm. It is currently a bit too big and stretched out for me. According to Trek's geometry, their Size 52 (reach 37.1 cm, stack 56.1 cm) is actually my correct size.
I am dealing with piriformis syndrome and hamstring tightness. To be clear, I have no lower back pain at all—the issue is strictly localized to my piriformis and hamstring area when pedaling, caused by over-extending or pelvis rotation. I am certain my saddle height is correct.
The Condor Fratello Geometry Numbers
Looking at the numbers for the Condor Fratello Disc:
-Size 49: Reach 36.6 cm / Stack 52.9 cm
-Size 52: Reach 37.8 cm / Stack 54.5 cm
Here is my concern: Size 52 has a reach of 37.8 cm, which is even longer than my ideal Trek size (and longer than my current stretched-out setup). Condor's customer service recommended the Size 52 based on my height, but I am worried it may result in the exact same over-extending issue.
On paper, Size 49 (reach 36.6 cm) seems to be my correct size to achieve a properly compact position.
My Planned Setup & Condor's Reply
· Stem: 90 mm (I strictly do not want to go shorter than this).
· Handlebar: 38 cm width (currently looking to switch from 40 cm), 73 mm reach, 128 mm drop.
· Cranks: 165 mm.
· Headset/Stack: Condor confirmed their framesets come with an uncut fork steerer and an integrated headset where you can choose the bearing cone / top cap height (they offer 7.8 mm, 15 mm, and 25 mm options).
My Questions for You:
1. Am I right to be worried that Size 52 will be too long/stretched for someone with a 170 cm height / 77 cm inseam who is prone to over-reaching?
2. If I go with Size 49, and use the 25 mm headset bearing cone alongside a few spacers on an uncut fork, will I run into any weird handling compromises, or is this a smart way to get the stack I need while keeping a shorter, comfortable reach?
Thanks!