I have a 2008 KFX 450 I have added a aftermarket exhaust and fuel controller, anyone know how much more a intake would add in power?? also what is the best intake out there for the KFX thanks!!

 

at ama nationals i see alot of rath airboxes on the kfx's, and alot that just run a plain filter and no box haha. may i ask, what exhaust do u have? is it a slip on or full system? and what kind of fuel controller u got too?

 

I run a Lexx slip on with the Lexx fuel controller they both have helped a bunch, I left the stock head pipe because it is really pretty good for O.E.M and it is Titanium so pretty light. I have not herd of the rath before? do you have a website?