I know they make one for GPX250's but the modification is permanent -- you have to break something to fit it in. I've been told that although they have a higher flow rate (50% higher), they let a lot more crap into the carbs than a stock filter, despite the oil treated material they use. However, they advertise that it will significantly reduce the amount of dirt/stuff that gets in. Can I get some opinions on this before I decide to go ahead and swap it out? Thanks.