I want to put a Stage 1 hotcam upgrade in my quad, but dont want to change the whole valve train. I've always heard that the stage 1 will work just fine with stock parts. My only performance mods so far are a FMF Titanium-4 14" race muffler, and a K&N kit, and eventually the FMF Power Bomb header. My main question is if I will need to jet it as a result of the Hot cam ugrade, and even if I dont need to, is it worth it to do. Thanks to anyone who answers.

 

I have an 04 raptor 660 have the stage 1 hotcam hmf exhaust 686 big bore I installed the cam after rejetting for the pipe and did not rejet for the cam and it ran fine, did not change valve springs or anything with the valves although i did not notice that much of a power diffrence from the cam alone

good luck