I have the Fidanza flywheel and it is definately heavier than 7 or 8 pounds. I would guess closer to 11 or 12 pounds. It's still much lighter than stock. I have only had it in for about a week and I will say that my car revs faster since I find myself shifting more quickly than before. I haven't had any issues with it, but it's still early. I'll post if anything changes.
