thinkin about boring my 04 wolverine can anyone tell me about the gains i can expect from a powroll 365 kit, or the four stroke tech 366 kit. i have a jet kit, 424, and a hmf pipe right now, and im just not satisfied.

 

I had FST do this mod to a 95 wolverene. The big bore, flow port head, heavy valve springs. I also changed the carb.
It ran really strong for what it was. The problem I had was getting it to breathe. With the airbox lid off it would run real nice. The entire intake system on that atv was HORRIBLE