does anyone know if an exhaust for a raptor 660 will fit on a new yfz?

 

As a general rule, and it's 99.9% accurate, a pipe made for a different machine will not work. Headers never work, and while some canisters may fit, they almost never bolt up. Sometimes there are even frame changes from one year of production to another, and a pipe that fit on last year's model wont fit on this years.

 

I'd have to agree with maddog56, but then, anything's possible with some modification.

 

the pipe is only a slip on so i dont have 2 woeer about making headers fit

 

No you wont, but I'm going to wager it wont mate up to the existing header. Assuming for a moment that it does, and the pipe uses the sliding clamp type of mount, then you have got a pretty good shot of making it work. If they're fixed mounts you'll be in for some fab work.