I am going to lay this out there and probably get told everything that I have read from searching but here it goes. I am going to be racing my bike in a local atv drag racing event and had some questions. The class I am racing in is stock 350cc and under. The class allows engine bolt-ons without race fuel. I am currently running my bike with Trinity IV pipes, Trinity Head IV 19cc swirl cut domes, advance timing and pod filters. My compression is 160ish and I run avgas to be safe. My problem is I cant run the avgas it has to be pump gas. So will my engine be safe running on pump gas for a total for 6 or less 300' runs. I would run it in the next class up but then it jumps to more of an open class and I would get dominated on.