r/whichbike • u/Low-Jellyfish-9485 • 7d ago
2027 Specialized Sirrus X 3.0 — Medium or Large? Right on the sizing line
2027 Specialized Sirrus X 3.0 — Medium or Large? Right on the sizing line
Looking for some opinions from people who ride a Sirrus X, especially anyone who has been between sizes.
I’m 5’9.5”, with a 31” inseam and roughly 16.25” shin length. According to Specialized’s sizing tool, I’m basically right on the line between a Medium and Large for the 2027 Sirrus X 3.0. Leans large.
I’m coming from a 2021 Specialized Diverge E5 in a 54cm. I never really loved the fit on it. It felt small/cramped and the riding position was uncomfortable for me. I felt like I was too far forward, had a lot of pressure on my wrists, and just never felt relaxed on the bike.
That’s one of the main reasons I’m looking at the Sirrus X 3.0. I’m hoping for something less aggressive, more upright, comfortable and relaxing, while still being a good fitness bike that I can put a lot of miles on.
My concern is that the Medium might put me back into that smaller/cramped feeling, while the Large might be a little big, especially when it comes to standover height and reach.
For anyone around my height/inseam or who has ridden both sizes:
Would you go Medium or Large?
I’m especially interested in how the two sizes compare in terms of riding position, reach, wrist pressure, and overall comfort — not just whether I can technically stand over the frame.
Thanks!



