Yes, but one comparison to the stockers, and you can see they are much stronger. Also, because they are lighter, they are easier on the rods and crank, especially if you compare them to old heavy forged dome top pistons. If they live in my circle track motors at 6800 rpm mostly wide open throttle, for HOURS they will live in any normal street inviroment almost forever. Well, wait, actually I do have a set of the KB243s in my street car that I built in 2002 and there are doing fine too....that's probally 80k miles by now. With KB pistons, its all in proper bore sizing, and PROPER RING GAPS.
