[mikae1]

And with MTB you mean MTB frameset? I see plenty of hard ridden +10 year old MTB steel frames. I have two myself.

In mountainbiking I think the greater threat to longevity is “standards” inflation though. 157mm super boost spacing, here we come.

[thefz]

Oldest I've seen is a 15 years old XC hardtail that has been put to sleep only because its owner slammed it into a tree opening a hole in the top tube. No human was hurt, fortunately, rest of the bike was still in great condition.

Curious to see the +10 years old full sus steel frames, though.