Originally Posted by
Mulberry20
Not sure I would agree. The Columbus XCR tube set is fairly new. It is the only seamless, stainless steel tube set available and it is lighter and stronger than any metal tub set. Walls can be a thin as .4 mm. The Cicli Barco reviewd in the link is 17.7 lbs with Barco’s in house stainless fork. A carbon fork would probably bring it to flat 17. That bike is spec’d to the gills and came in at 12k. A new Trek Domane weighs 20lbs.
Honestly, would you pick a 12k Giant, Specialzed or Trek over that gorgeous, custom, handmade Italian beauty?
https://www.cyclist.co.uk/reviews/66...rco-xcr-review
I'd definitely take the Barco. But XCr came out in 2007 which is already 13 years ago.
And they were using walls that thin with 753 if not 531 back in the 80s. It wasn't as strong but they didn't have CEN testing.
Reynolds 931 is sometimes seamless. I don't think anyone ever uses 931 or 921 though. If you're going to the bother of using stainless might as well make it 953 or XCr.