Please fill me in with the goods and the bads and which one is faster

 

I would say they are both great, but they are both different. What kind of riding will you do? In stock form, I would give the knod to the 525. There was a guy in the WORCS series that races stock A class. Got the KFX and basicly said, it needs motor and suspension mods to be able to compete in A class. Sold it and got a 525 and said it's a animal and is very pleased with it. Been seeing mixed reviews on the 450, but everyone who has the 525 seems to love it. But either would make a sweet quad and there's only 30lbs difference between the 2, so weight should not be to big of a issue unless your into full MX. Then the 450 would be better.

 

They Say the 525 Has the most HP in a sport quad. So I think the OutLaw 525 would be faster and the Independant suspension is great on my quad
The KFX is a fual injected 450. the 450 is lighter than the 525. I think that I would have to go with the OutLaw 525 Because they handle so great