Hey, don't give me false hope! You know how I get.
Seriously, from ASV? Pretty sure it's a five year warranty for the levers I got. There are other series ASV levers that have a three or a one year warranty. Maybe you saw a distributor that offered their own lifetime warranty for them?
http://asvinventions.com/Unbreakable-Levers Their website still says 5/3/1 year depending on which levers.