Originally Posted by
Darth Lefty
Springs basically don't wear out unless they're junky. And for $250 those won't be. if that thing fails it will be fatigue. The pivots might wear out but since it's all under compression you'd have a hard time telling. Also, the page says they've been around since 2011 so the answer is probably "at least 5 years"
I'm not sure why it's better than a springer saddle and/or a cheap straight suspension post of the $15-30 variety found on inexpensive comfort bikes.
The way they list the springs on the website, it gives me the impression at least, that these springs are effectively consumable items, even if it is years in between replacement.